ОКСОАЛКИЛИДЕНОВЫЕ КОМПЛЕКСЫ ВОЛЬФРАМА ДЛЯ Z-СЕЛЕКТИВНОГО МЕТАТЕЗИСА ОЛЕФИНОВ

... 1. Соединение формулы I-c:где:каждый из Rи Rнезависимо представляет собой R, -OR, -SR, -N(R), -OC(O)R, -SOR, -SOR, -SON(R), -C(O)N(R), -NRC(O)R или -NRSOR;Rпредставляет собой Rили -OSi(R);Rпредставляет собой R, -N(R), -NRC(O)R, -NRC(O)OR, -NRC(O)N(R), -NRSOR, -NRSON(R), -NROR, NR; -OR, O(R)или возможно замещенную группу, выбранную из 5-6-членного моноциклического гетероарильного кольца, содержащего по меньшей мере один атом азота и 0-3 дополнительных гетероатомов, независимо выбранных из азота, кислорода и серы; 4-7-членного насыщенного или частично ненасыщенного гетероциклического кольца, содержащего по меньшей мере один атом азота и 0-2 дополнительных гетероатомов, независимо выбранных из азота, кислорода и серы; 7-10-членного бициклического насыщенного или частично ненасыщенного гетероциклического кольца, содержащего по меньшей мере один атом азота и 0-4 дополнительных гетероатомов, независимо выбранных из азота, кислорода и серы; или 8-10-членного бициклического гетероарильного кольца ...

KATALYSATORSYSTEM ZUR UMWANDLUNG VON UNGESAETTIGTEN KOHLENWASSERSTOFFEN, VERFAHREN ZU SEINER HERSTELLUNG UND DESSEN VERWENDUNG

PROCESS FOR OLEFIN METATHESIS IN THE PRESENCE OF A COMPLEX TUNGSTEN CATALYST

MONOCYCLOPENTADIENYLKOMPLEXE

VIZINALE DI(HETERO)ALKYLENORGANO-METALLATE UND VERFAHREN ZUR HERSTELLUNG VON AMINEN

VERFAHREN ZUR HERSTELLUNG VON CARBONSAEUREN

Verfahren zur katalytischen Disproportionierung acyclischer Olefine

KATALYTISCHE TRIMERISATION UND TETRAMERISATION VON OLEFINISCHEN MONOMEREN

Metallacarboranes

The invention provides a polynuclear compound comprising two or more metal-hapto-3-capped nidocarborane groups. Also provided is the use of such a compound as a catalyst in a chemical reaction such as a hydrogenation or oxidation reaction.

PREPARATION OF CARBOXYLIC ACID ANHYDRIDES

Metal chelate complexes for foming oxidation catalyst.

A robust chelate complex is provided having formula (I) wherein M is a metal, preferably a transition metal; Z is an anionic donor atom, at least three of which are nitrogen, and the other is preferably nitrogen or oxygen; LI is a labile ligand; Ch,, Ch and Ch3, are oxidation resistant chelate groups which are the same or different and which form 5- or 6-membered rings -with the metal, and Ch^ is a chelate group having structure (a) wherein R, and R2_are the same or different and are preferably selected from the group consisting of hydrogen, halogen, methyl, and CF or when linked, a 5- or 6-membered ring cyclo substituent. The complex provides a stable, long-lived oxidation catalyst or catalyst activator.

Long-lived homogenous oxidation catalyst

Long-lived homogenous oxidation catalysts

Long-lived homogenous oxidation catalyst

CATALYSTS AND PROCEDURES FOR THE CATALYTIC OXIDATION

TETRAMERISIERUNG OF OLEFINEN

MONOCYCLOPENTADIENYLKOMPLEXE

CHIRALE LIGANDS, ITS TRANSITION METAL COMPLEXES AND THE APPLICATION OF THESE IN ASYMMETRICAL REACTIONS

PROCEDURE FOR THE ISOMERIZATION OF ALLYL ALCOHOLS

CATALYTIC COMPOSITION AND PROCEDURE FOR ASYMMETRICAL ALLYLI ALKYLATION

A CATALYST SYSTEM CONTAINING AN AUTOACCELERATION INHIBITOR

VICINAL DI(HETERO)ALKYLENE ORGANOMETALATES AND PROCESSES FOR THE PRODUCTION OF AMINES THEREWITH

TETRAMERIZATION OF OLEFINS

ENANTIOSELECTIVE AMINATION AND ETHERIFICATION___________________

MANGANESE(IV) COMPLEX SALTS AND THEIR USE AS OXIDATION CATALYSTS

Mesoscopic organopolysiloxane particles with chemically bound metallic compounds

Epoxidation catalyst

PREPARATION OF COLLOIDAL GROUP VI-A TRANSITION METAL DISPERSIONS BY THE POLYMER-CATALYZED DECOMPOSITION OF CARBONYL COMPOUNDS THEREOF

CHIRAL LIGANDS, TRANSITION-METAL COMPLEXES THEREOF AND USES THEREOF IN ASYMMETRIC REACTIONS

... ²²²Chiral ligands and transition metal complexes based on such chiral ligands ²useful in asymmetric catalysis are disclosed. The chiral ligands include ²phospholanes, P, N ligands, N, N ligands, biphenols, and chelating phosphines. ²The ferrocene-based irridium (R,R)-f-binaphane complex reduces imines to the ²corresponding amines with 95-99.6 % enantioselectivity and reduces .beta.-²substituted-.alpha.-arylenamides with 95 % enantioselectivity. The transition ²metal complexes of the chiral ligands are useful in asymmetric reactions such ²as asymmetric hydrogenation of imines, asymmetric hydride transfer reactions, ²hydrosilylation, hydroboration, hydrovinylation, hydroformylation, allylic ²alkylation, cyclopropanation, Diels-Alder reaction, Heck reaction, ²isomerization, Aldol reaction, Michael addition and epoxidation reactions.² ...

PREPARATION OF COLLOIDAL GROUP VI-A TRANSITION METAL DISPERSIONS BY THE POLYMER-CATALYZED DECOMPOSITION OF CARBONYL COMPOUNDS THEREOF

There is disclosed a method for the preparation of a homogeneous, physically stable dispersion of colloidal metal particles of a transition metal selected from the group consisting of chromium, molybdenum and tungsten having a size in the range of from about 10 Angstrom units to about 200 Angstrom units. The method comprises preparing a solution of a functional polymer in an inert solvent, and incrementally adding thereto a transition metal precursor, at a temperature at which the transition metal precursor will become bound to the polymer and thermally decompose to produce elemental transition metal particles, the process being carried out in an inert atmosphere. Such dispersions may be used per se as catalysts, or may be used for the preparation of supported colloidal transition metal catalysts. The dispersions may also be used for the preparation of ablative optical recording media.

CATALYTIC DEGRADATION OF OXIDIZABLE ORGANIC AND INORGANIC COMPOUNDS IN WATER

Oxidizable organic and/or inorganic compounds in waters are subjected to catalytic degradation using a catalyst applied to an oxygen-storing inert carrier, for example of graphite, coke, a non-gas-sing coal or active carbon. The carrier used is coated with a cationic dye complexed with heteropolyacids and/ or polyacids and/or salts or metal acids of subgroups V to VIII. The advantages of the process include the prevention of biological growth on the catalyst surface by the biocidal dye cation and the avoidance of calcium and magnesium deposits on the catalyst surface through the presence of the cationic solid.

TANDEM TETRAMERISATION-POLYMERISATION OF OLEFINS

The invention provides a process for polymerising olefins to branched polyolefins in the presence of a polymerisation catalyst and a cocatalyst, wherein the cocatalyst produces 1-octene in a selectivity greater than 30 %.

CATALYTIC TRIMERIZATION OF OLEFINIC MONOMERS

... ²²²A catalyst composition suitable for the trimerization of olefinic monomers, ²wherein the catalyst composition comprises: a) a source of chromium, ²molybdenum or tungsten; b) a ligand of general formula (I); (R1) (R2) P-X-P ²(R3) (R4) wherein: X is a bivalent organic bridging group; R1and R3 are ²independently selected from, hydrocarbyl, substituted hydrocarbyl, ²heterohydrocarbyl and substituted heterohydrocarbyl groups, with the proviso ²that when Rl and R3 are cycloaromatic groups they do not contain a polar ²substituent at any of the ortho-positions; R2 and R4 are independently ²selected from optionally substituted cycloaromatic groups, each R2 and R4 ²bearing a polar substituent on at least one of the ortho-positions; and c) a ²cocatalyst. The present invention further relates to a process for the ²trimerization of olefinic monomers, particularly the trimerization of ethylene ²to 1-hexene, wherein the process comprises contacting at least one olefinic ²monomer with the catalyst composition ...

HIGH ACTIVITY SUPPORTED DISTILLATE HYDROPROCESSING CATALYSTS

Supported metallic catalysts comprised of a Group VIII metal, a Group VIB metal, and an organic additive, and methods for synthesizing supported meta llic catalysts are provided. The catalysts are prepared by a method wherein precursors of both metals are mixed and interacted with at least one organic additive, dried, calcined, and sulfided. The catalysts are used for hydropr ocessing, particularly hydrodesulfurization and hydrodenitrogenation, of hyd rocarbon feedstocks.

OLEFIN METATHESIS PROCESS AND CATALYST CONTAINING TUNGSTEN FLUORINE BONDS

A process and catalyst for the metathesis of olefins in general and specifically for the production of propylene from ethylene and butylene has been developed. The catalyst comprises a tungsten metal compound, which contains at least one tungsten-fluoro bond, dispersed or grafted onto a support. A specific example of the catalyst is the compound WOF(CH2CMe3)3 grafted onto a silica support.

METHOD OF PREPARING CATALYST FOR HYDROGENATION OF HYDROCARBON OIL

MESOSCOPIC ORGANOPOLYSILOXANE PARTICLES WITH CHEMICALLY BOUND METALLIC COMPOUNDS

The invention relates to organopolysiloxane particles which are cross-linked, comprise a single molecule, have chemically bound metallic compounds and an average diameter of from 5 to 200 nm and are soluble in at least one solvent chosen from dichloromethane, pentane, acetone, ethanol and water to at least 1 % by weight. At least 80 % of the particles have a diameter which deviates a maximum of 30 % from the average diameter. The organopolysiloxane particles can be used as catalysts.

LONG-LIVED HOMOGENOUS OXIDATION CATALYSTS

A robust chelate complex is provided having formula (I) wherein M is a metal, preferably a transition metal; Z is an anionic donor atom, at least three of which are nitrogen, and the other is preferably nitrogen or oxygen; L1 is a labile ligand; Ch1, Ch2 and Ch3 are oxidation resistant chelate groups which are the same or different and which form 5- or 6-membered rings with the metal, and Ch4 is a chelate group having structure (a) wherein R1 and R2 are the same or different and are preferably selected from the group consisting of hydrogen, halogen, methyl, and CF3 or when linked, a 5- or 6-membered ring cyclo substituent. The complex provides a stable, long-lived oxidation catalyst or catalyst activator.

LONG-LIVED HOMOGENOUS OXIDATION CATALYSTS

A robust chelate complex is provided having formula (I) wherein M is a metal , preferably a transition metal; Z is an anionic donor atom, at least three of which are nitrogen, and the other is preferably nitrogen or oxygen; L1 is a labile ligand; Ch1, Ch2 and Ch3 are oxidation resistant chelate groups which are the same or different and which form 5- or 6-membered rings with the metal, and Ch4 is a chelate group having structure (a) wherein R1 and R2 are the same or different and are preferably selected from the group consisting of hydrogen, halogen, methyl, and CF3 or when linked, a 5- or 6-membered ring cyclo substituent. The complex provides a stable, long-lived oxidation catalyst or catalyst activator.

Verfahren zur Oligomerisation und Polymerisation von Olefinen

VERFAHREN ZUR HERSTELLUNG VON VERBINDUNGEN DES TYPS (PI)-ALLYL-ME-X.

Verfahren zu Hydroraffinierung eines schweren Kohlenwasserstofföls

PROCEDURE FOR THE SIMULTANEOUS PRODUCTION OF SPECIAL EPSILON CAPROLACTONEN AND CARBONIC ACIDS.

Catalytic process for the epoxidation of an olefin

The olefins of formula in which the symbols R represent hydrogen or certain hydrocarbon radicals, are converted to the corresponding epoxides by reacting with hydrogen peroxide at pH 6-9, in the presence of a catalyst containing an arsenic, antimony or bismuth derivative, for example an organometallic derivative, and a derivative of an element of groups IVA, VA or VIA of the periodic system, for example a carbonyl derivative of molybdenum, tungsten, titanium or vanadium. The reaction is carried out between 0 and 100 DEG C and between 0 and 100 bars. The catalyst involved has a long lifetime and makes it possible to obtain good selectivity towards the epoxide.

Process for the preparation of organic complexes of transition metals

СПОСОБ ПОЛУЧЕНИЯ НЕОГЕКСЕНА

В заявке описан способ получения неогексена, включающий взаимодействие изобутена с катализатором на подложке, содержащим соединение вольфрама, выбранное из группы, включающей гидриды вольфрама, металлоорганические соединения вольфрама и металлоорганические гидриды вольфрама, и подложку, включающую оксид алюминия, так что образуется реакционная смесь, содержащая неогексен, и предпочтительно отделение неогексена от реакционной смеси с его выделением. Взаимодействие приводит к прямому образованию неогексена, предпочтительно в одну стадию (реакции) и с высокой молярной селективностью дял неогексена. Взаимодействие можно проводить при температуре, равной от 50 до 600°С, при абсолютном полном давлении, равном от 0,01 до 100 МПа.

CATALYST METATHESIS OF ALKANES, METHODS OF ITS PREPARATION AND USAGE

Method for producing carboxylic acids from olefins

Epoxidation catalyst, preparation process and use there

CATALYTIC SYSTEM FOR THE CONVERSION OF UNSATURATED HYDROCARBONS

CATALYTIC PROCESS OF PRODUCTION Of an ESTER Of CARBOXYLIC ACID BY CARBONYLATION Of an OLEFIN IN THE PRESENCE OF an ALCOHOL

Process for the Preparation of Olefins.

Novel transition metal complexes contg. nitroso groups - as catalyst in oligomerisation or in disproportionation of olefins

CATALYTIC SYSTEMS IMPROVED LIFETIME AND PROLONGED SHELF LIFE FOR OLEFIN METATHESIS

CARBENOMETAL COMPOSITION AND ITS USE AS CATALYST FOR CONVERTING OLEFINIC HYDROCARBONS

Improved catalyst for the metathesis of olefins

CATALYSTS FOR THE SYNTHESIS OF AMMONIA

EXPOXIDATION PROCESS

FUEL CELL ELECTRODE HAVING POROUS CARBON CORE WITH MACROCYCLIC METAL CHELATES THEREON

Catalisadores de oxidação homogêneos de longa vida

CATALYSTS FOR METATHESIS REACTONS INCLUDING ENANTIOSELECTIVE OLEFIN METATHESIS, AND RELATED METHODS

The present invention provides compositions comprising metal complexes, and related methods. In some embodiments, metal complexes of the invention may be useful as catalysts for chemical reactions, including metathesis reactions, wherein the catalysts exhibit enhanced activity and stereoselectivity. In some embodiments, the invention may advantageously provide metal complexes comprising a stereogenic metal atom. Such metal complexes may be useful in enantioselective catalysis.

METATHESIS CROSSLINKABLE COATING COMPOSITIONS

The invention relates to a metathesis crosslinkable binder composition comprising: i) at least one polymer comprising non-aromatic C=C double bonds, the polymer comprising an average of at least 4 unsaturated fatty acid residues per polymer chain, wherein at least one of the fatty acid residues has from C18 to C26 carbon atoms; and ii) at least a transition metal based metathesis catalyst according to formula (I) wherein L1 is a neutral amine containing electron donor ligand; L2 is an optional neutral electron donor ligand; X1, X2 are independently from each other an anionic ligand; a, b in (X1)a and (X2)b of formula (I) are independently from each other an integer from 0 to 4; R is selected from the group consisting of linear or branched alkyl, cycloalkyl, aralkyl, aryl or their substituted equivalents; Ra is selected from the group consisting of hydrogen, linear or branched alkyl, cycloalkyl, aralkyl, aryl, or their substituted equivalents; M is a transition metal selected from the group ...

RECYCLABLE CHIRAL METATHESIS CATALYSTS

The present invention relates to chiral metal catalysts for stereoselective olefin metathesis reactions, which are recyclable and reusable in such metathesis reactions. The chiral metal-based metathesis catalysts of the invention comprise multidentate optically active or racemic chiral ligands that enable their use in asymmetric synthetic processes, such as for example, in ring-opening and ring-closing metathesis reactions (ROM and RCM, respectively) of alkenes. The catalysts of the invention are organometallic complexes of multivalent metals comprising one or more chiral bidentate ligands that exhibit superior reactivity and stereoselectivity properties. The present invention also provides methods of making such catalysts and methods for utilizing them in catalyzing stereoselective olefin metathesis reactions to provide asymmetric products in relatively high enantiomeric or stereoisomeric excess.

Metal catalyst and its use

A metal catalyst obtained by contacting (A) at least one metal or metal compound selected from i) tungsten compounds composed of tungsten and an element of group IIIb, IVb, Vb, or VIb, ii) molybdenum compounds composed of molybdenum and an element of group IIIb, IVb, Vb, or VIb, and iii) tungsten metal and molybdenum metal; (B) at least one compound selected from tertiary amine compounds, tertiary amine oxide compounds, nitrogen-containing aromatic compounds and nitrogen-containing aromatic N-oxide compounds; (C) hydrogen peroxide; and (D) a phosphate compound, is provided.

Mercaptan oxidation catalyst

A catalyst is disclosed for oxidizing mercaptans to disulfides, or inorganic sulfides to elemental sulfur. The catalytic agent is a compound consisting of a metal atom bonded to a chelate such as phthalocyanine, and also to axial ligands. The compound preferably is composited on an inert granular solid support. The catalyst is an improvement over existing catalysts in that its use does not require basic agents such as caustic.

Catalyst prepared from tungsten hexafluoride and a branched-chain alcohol

A catalyst is prepared by reacting tungsten hexafluoride with a branched-chain aliphatic alcohol in a molar ratio of 2:1 to 20:1. This catalyst can be used to oligomerize 1-butene to produce synthetic hydrocarbon oils.

Process for the simultaneous manufacture of epsilon-caprolactones and carboxylic acids

A cyclohexanone is oxidized by molecular oxygen in the presence of an aldehyde, a soluble compound of a metal selected from the group consisting of iron, palladium, vanadium, chromium, molybdenum, tungsten and cerium, and a compound which has a heterocyclic ring containing at least one nitrogen atom and which acts as a multidantate ligand, to form an epsilon-caprolactone and a carboxylic acid corresponding to the aldehyde.

Hydrocarbon oxidations catalyzed by nitride-activated metal coordination complexes

Hydrocarbon, and particularly lower molecular weight alkanes and cycloalkanes, may readily be oxidized with air or O2 to form such products as alcohols, ketones, and the like in high yields when there is employed as the catalyst a highly active nitride-activated metal coordination complex having the structure см. иллюстрацию в PDF-документе where M is a transition metal; " " is a ligand; and X is a nitride. Certain dimeric forms of the above catalyst are also employed herein. It has also been discovered that Group IV through VIII transition metal nitrides are also highly effective oxidation catalysts for lower molecular weight hydrocarbons such as alkanes.

Transition metal oxo, sulfido and amido complexes as catalysts of nucleophilic addition reactions

Methods are provided for carrying out nucleophilic addition reactions using oxo, sulfido or amido complexes of transition metals as reaction catalysts. Exemplary catalysts are oxo complexes of Group 7 transition metals, with rhenium (V) oxo complexes, including dioxo complexes, preferred. Nucleophilic addition reactions that can be catalyzed using the present methods include silylation, hydrosilylation, hydroamination, silylmetalation, carbometalation, aldol reactions, hydro- and carbometalation initiated cyclization/polymerization, and epoxide/aziridine opening. The invention also pertains to novel transition metal complexes that have utility in catalyzing such reactions.

Cycloolefin metathesis

There is disclosed a new process for ring-opening polymerization of cycloolefins by the use of a catalyst comprising (A) tungsten or molybdenum halides, (B) alkyl aluminum halides and (C) an alcohol which may optionally contain a halogen substituent and (D) an alcohol which has a nitrile substituent. Also the catalyst is disclosed as useful in metathesis of olefins.

Metal catalysts and methods for making and using same

Compounds having the formula: are disclosed. M¹ and M² are the same or different and are transition metal atoms or ions; Z² and Z³, independently, are the atoms necessary to complete a 3-12 membered heterocyclic ring; Z¹ is an alkylene or arylene group; Q¹ and Q² are the same or different and are electron withdrawing groups; L¹ and L³, taken together, represent -O-CR¹³-O-; L² and L⁴, taken together, represent -O-CR¹⁴-O-; and R¹³ and R¹⁴ are the same or different and are selected from the group consisting of alkyl groups and aryl groups or R¹³ and R¹⁴ represent alkylene or arylene groups that are directly or indirectly bonded to one another. Methods for making such compounds are also disclosed, as are intermediates which can be used in their preparation. Also disclosed are methods for carrying out C-H insertion ...

SOLUTION PHASE POLYDIACETYLENE SYNTHESIS BY ALKYNE METATHESIS

The present disclosure provides compositions for alkyne metathesis catalysts and methods for preparing enediynes and alkyne metathesis catalysts. The disclosure also provides methods for catalyzing alkyne metathesis reactions and polymerization of enediyne substrates to polydiacetylenes in solution-phase.

Group 5 and 6 transition metal catalyst precursors

Process for the catalytic epoxidation of low molecular weight olefins, and catalyst for performing said process

Catalytic epoxidation process of low molecular weight olefins, by means of a bimetallic boron-molybdenum reaction catalyst of the kind;



in which Y is a bivalent residue of an aromatic or aliphatic hydrocarbon; X is a generic ligand, and in which the oxygen bridge between B and Mo is of the chemical covalent type.

Advantageously, the said catalyst may be supported on polymeric matrices, for its use in heterogeneous phase.

HYDROGEN CHLORIDE-FREE CATALYST SYSTEM FOR DEMIRIZING AND CO-DIMERIZING OLEFINS

A substantially hydrogen chloride-free active catalyst system for dimerization and codimerization of alpha-olefins. The catalyst system includes, as one catalyst, a complex of a tungsten salt and an aniline, and, as a second catalyst, an alkyl aluminum halide.

КАТАЛИТИЧЕСКАЯ ТРИМЕРИЗАЦИЯ ОЛЕФИНОВЫХ МОНОМЕРОВ

Настоящее изобретение относится к катализатору тримеризации олефиновых мономеров. Описана каталитическая композиция для тримеризации олефиновых мономеров, содержащая а) источник хрома, молибдена или вольфрама; b) лиганд общей формулы (I), в которой Х означает бивалентную органическую мостиковую группу, выбранную из замещенных или незамещенных алкиленовых групп, причем в случае замещенных групп заместители представляют собой углеводородные группы; R1 и R3 представляют собой циклоароматические группы, которые не содержат полярных заместителей ни в одном из орто-положений; R2 и R4 независимо выбирают из необязательно замещенных циклоароматических групп, причем каждый из R2 и R4 имеет полярный заместитель, по меньшей мере, в одном орто-положений; и с) сокатализатор. Также описан способ тримеризации олефиновых мономеров, включающий взаимодействие, по меньшей мере, одного олефинового мономера в условиях реакции тримеризации с указанной выше каталитической композицией. Технический результат - ...

Catalytic wet oxidation of organic or inorganic contaminants

Wet oxidation of organic or inorganic contaminants in water so as to purify it is effected using as catalyst chelate complex compounds of sub-Group 1, 2 and/or 4-8 elements, the compounds preferably having dichalcogens as ligands, especially oxyketones, oxyaldehydes, oxyquinones, diketones (especially beta -diketones), enols, oxy-acids, dicarboxylic acids, ketocarboxylic acids (or their esters), as well as their S or Se analogues. The catalysts are also claimed, especially those containing sub-Group 7 or 8 elements.

Activation of bis-tri:organosilyl-peroxide for oxidation of aromatics

Metal acid derivatives based on elements of Sub-Groups 4 to 7 are used for the metal-catalysed activation of bis-(triorganosilyl)-peroxides in the oxidation of aromatic compounds. A method for the metal-catalysed activation of bis-(triorganosilyl)-peroxides of formula R<1>R<2>R<3>Si-OO-SiR<1>R<2>R<3> (I) for the oxidation of aromatics (II) comprises mixing (II) with (I) and activating the peroxide with a metal-acid derivative of formula MnOxXyLz (III), in which R<1>-R<3> = optionally functionally-substituted hydrocarbyl; M = a Sub-Group 4-7 metal; L = neutral ligands selected from amine oxides, phosphane oxides, arsane oxides, phosphoric acid triamides, formamides, pyridines and their N-oxides, imidazoles, pyrazoles and triazoles; X = anionic ligands, i.e. halides, alkyl, alkoxy, aryl, aryloxy or trialkylsilyl residues, hydroxyl, metal acid anhydride residues of formula -OMOx, residues of carboxylic, sulfonic, phosphonic, carbonic, sulphuric or phosphoric acid, hydroperoxy or peroxyalkyl ...

Katalysator und Verfahren für die Epoxydierung von olefinischen Verbindungen

N-Heterozyklische Carbenkomplexe von Metallimidoalkylidenen und Metalloxoalkylidenen und deren Verwendung

Beschrieben wird ein N-heterozyklischer Carbenkomplex der allgemeinen Formeln I oder IIwonach A1 für NR2 und A2 für NR2 oder S steht, C für ein Carbenoid-Kohlenstoffatom steht, der Ring B ein 5 bis 7-gliedriger Ring ist, der neben A1 und A2 weitere Heteroatome in Form von Stickstoff oder Schwefel enthalten kann, der Substituent R2 für einen linearen oder verzweigten C1-C10-Alkyl-, einen linearen oder verzweigten C2-C10-Alkenyl-, einen C3-C12-Cycloalkyl-, einen linearen oder verzweigten C5-C100-Polyoxyalkyl-, einen C5-C10-Aryl- oder einen C5-C10-Heteroaryl-Rest, einen C5-C10-Aryloxy-, einen linearen oder verzweigten C1-C10-Perfluoralkyl-, einen linearen oder verzweigten C1-C10-Perchloralkyl-, einen linearen oder verzweigten teilfluorierten C1-C10-Alkyl-, einen linearen oder verzweigten teilchlorierten C1-C10-Alkyl-, einen perfluorierten C5-C10-Aryl-, einen teilfluorierten C5-C10-Aryl-, einen perchlorierten C5-C10-Aryl- oder teilchlorierten C5-C10-Aryl-Rest steht, und, wenn A1 und A2 jeweils ...

VERFAHREN ZUM KATALYTISCHEN ABBAU VON OXIDIERBAREN ORGANISCHEN UND ANORGANISCHEN VERBINDUNGEN IN WAESSERN.

In the catalytic breakdown of oxidisable organic and/or inorganic cpds. in water, with a supported catalyst, and oxidising agents, there is used an inert carrier, which has been coated with cationic dyes, coated with heteropolyacids and/or polyacids and/or metal salts or metal acids of Sub-gps. V-VIII.

VERFAHREN ZUM KATALYTISCHEN ABBAU VON OXIDIERBAREN ORGANISCHEN UND ANORGANISCHEN VERBINDUNGEN IN WAESSERN

Einen Autobeschleunigungsinhibitor enthaltende Katalysatorzusammensetzung.

Methode zur Herstellung eines Katalysators für Kohlenwasserstoffhydrierung

Process for the manufacture of-ð-allylic metal compounds

Compounds of general formula wherein Q stands for a transition metal of Sub-Group IVA-VIII of the Periodic System, X for an anionic residue, m and n for whole numbers of 1-3 so that m plus N totals 2 to 4, and R1-R5 which are either the same or different for hydrogen, alkyl, cycloalkyl, aralkyl or aryl and the radicals R1 and R4 may be coupled together in an olefinically unsaturated ring system are prepared by reacting p -allylic compounds of transition metals of Sub-Group IVA-VIII of the Periodic System of general formula wherein Q and R1 to R5 have the above significance and p is a whole number of 1 to 4, or complexes of these transition metals which contain exclusively polyolefins as ligands, with acid compounds of the formula HX. HX may be water-free hydrogen halides, organic acids, phenols, thiophenols, mercaptans, hydrocyanic acid and 1,3 diketo-enols. As an example of the use of complexes of the transition elements cyclotetraene - nickel - ...

Metallacarboranes

EXPOXIDATION PROCESS

... 1436513 Catalytic epoxidation of olefines with hydrogen peroxide PRODUITS CHIMIQUES UGINE KUHLMAN 2 Sept 1974 [2 Oct 1973] 38252/74 Heading C2C [Also in Division B1] An epoxidation comprises reacting at a temperature in the range 0-100‹ C. an olefin of Formula (I) R 1 R 2 C = CR 3 R 4 , in which R 1 , R 2 , R 3 and R 4 are the same or different and each represents hydrogen, a straight-chain C 1 -C 30 alkyl group, a branched alkyl or cycloalkyl radical having 3-12 carbon atoms or a C 6 -C 12 hydrocarbon radical comprising a benzene nucleus, or R 1 and. R 2 or R 3 and R 4 together represent a straight-chain or branched C 3 -C 11 alkylene radical, the radicals R 1 -R 4 being optionally unsaturated and/or substituted by functional groups, with hydrogen peroxide in the presence of a catalyst comprising a first substituent consisting of at least one derivative of lead and a second constituent consisting of at least one derivative of the elements of Groups IVa, Va or VIa of the Periodic Table ...

Olefin disproportionation process and catalyst for use therein

A process for forming non-polymeric disproportionation products of non-conjugated olefins using catalysts comprising (1) at least one of certain neutral carbene complexes, and (2) at least one of certain compounds of Groups IVa, IVb, Vb, VIb, VIIb, VIII, and Ib of the Periodic Table of the Elements.

ORGANOMETALLIC COMPLEXES THEIR PRODUCTION AND THEIR USES

The preparation of organic delta - and pi -complexes of transition metals of the formula Me(A)n(L-C)(L)m is described. Me is a transition metal, L is selected from alkyl or aryl-phosphines, -arsines, and -stibines, L-C is selected from the same, in which one C-H bond has reacted with the central metal Me, and A is an olefin selected from linear olefins having a carbon atom number from 2 to 5 or cyclic olefins having a carbon atom number from 6 to 8. The reaction is carried out starting with the hydride complex of the formula MeHxLn1, in which x varies from 5 to 7 and n can be 2 or 3. The complexes thus obtained show an increased reactivity towards the olefins, compounds with mobile hydrogen and towards hydrogen itself. They are used as catalysts in numerous reactions such as hydrogenations, carbonylations and oxidations.

PREPARATION OF CARBOXYLIC ACIDS

PROCEDURE FOR THE PRODUCTION OF AMINES BY VICINALEN DIHETEROALKYLENORGANOMETALLVERBINDUNGEN

METAL CATALYST AND PROCEDURE FOR ITS PRODUCTION AND USE

PROCEDURE FOR THE PRODUCTION OF NEOHEXEN

CHIRALE DIAZAPHOSPHOLIDINLIGANDEN

Tungsten based catalyst system

METHOD FOR ISOMERIZING ALLYL ALCOHOLS

Process

The present invention provides a continuous process for the epoxidation of an olefinic compound with an oxidant, which process comprises reaction of an olefinic compound with an oxidant in the presence of a catalyst in an apparatus that comprises a reactive distillation column, which column comprises (i) a reactive section, which comprises the catalyst (ii) a rectifying section situated above the reactive section and adapted to allow separation of reagents and/or by-products from products (ix) a stripping section situated below the reactive section and adapted to allow separation of product from reagents and/or by-products (x) a vessel situated below the stripping section and adapted to provide a source of heat for the column and in which initial vaporisation of one or more of the reagents can occur, wherein the temperature in the reactive section (i) is a temperature at which the reaction between the olefinic compound and the oxidant takes place and the temperature in the stripping section (iii) is higher than the temperature in the rectifying section (ii).

Molecular Molybdenum Persulfide and Related Catalysts for Generating Hydrogen from Water

New metal persulfido compositions of matter are described. :In one embodiment the metal is molybdenum and the metal persulfido complex mimics the structure and function of the triangular active edge site fragments of MoS 2 , a material that is the current industry standard for petroleum hydro desulfurization, as well as a promising low-cost alternative to platinum for electrocatalytic hydrogen production. This molecular [(PY5W 2 )MoS 2 ] x+ containing catalyst is capable of generating hydrogen from acidic-buffered water or even seawater at very low overpotentials at a turnover frequency rate in excess of 500 moles H 2 per mole catalyst per second, with a turnover number (over a 20 hour period) of at least 19,000,000 moles H 2 per mole of catalyst.

Electrocatalytic alkenes and alkynes dimerizations and trimerizations

The present disclosure relates generally to carbon to carbon coupling processes, and more specifically, to dimerization or trimerization by electrocatalysis of alkenes and alkynes at room temperature.

IMMOBILIZED METAL ALKYLIDENE CATALYSTS AND USE THEREOF IN OLEFIN METATHESIS

The invention relates to immobilized metal alkylidene catalysts. The catalysts are useful in olefin metathesis. 2. Compound according to claim 1 , wherein M is Mo or W claim 1 , preferably wherein M is W.3. Compound according to or claim 1 , wherein Y is oxygen.4. Compound according to any one of to claim 1 , wherein Rand R′ are independently from one another H and tert-butyl claim 1 , or H and CMePh; or wherein at least one of Rand R′ is ortho-alkoxyphenyl claim 1 , preferably wherein alkoxy is Cto C-alkoxy; or wherein Rand R′ are independently from one another H and ortho-alkoxyphenyl claim 1 , preferably wherein alkoxy is Cto C-alkoxy.5. Compound according to any one of to claim 1 , wherein ring B is a heterocycle selected from the group comprising or consisting of: 1 claim 1 ,3-disubstituted imidazol-2-ylidene claim 1 , 1 claim 1 ,3-disubstituted imidazolidin-2-ylidene claim 1 , 1 claim 1 ,3-disubstituted tetrahydropyrimidin-2-ylidene claim 1 , 1 claim 1 ,3-disubstituted diazepin-2-ylidene claim 1 , 1 claim 1 ,3-disubstituted dihydro-diazepin-2-ylidene claim 1 , 1 claim 1 ,3-disubstituted tetrahydrodiazepin-2-ylidene claim 1 , N-substituted thiazol-2-ylidene claim 1 , N-substituted thiazolin-2-ylidene claim 1 , N-substituted triazol-2-ylidene claim 1 , N-substituted dihydrotriazol-2-ylidene claim 1 , mono- or multisubstituted triazolin-2-ylidene claim 1 , N-substituted thiadiazol-2-ylidene claim 1 , mono- or multisubstituted thiadiazolin-2-ylidene and mono- or multi-substituted tetrahydrotriazol-2-ylidene claim 1 ,{'sup': 2', '2, 'wherein the heterocycle may have one or more further substituents, wherein said substituents independently have the meaning of Ror halogen or NR.'}6. Compound according to claim 5 , wherein ring B is selected from 1 claim 5 ,3-dimesitylimidazol-2-ylidene claim 5 , 1 claim 5 ,3-dimesitylimidazolidin-2-ylidene claim 5 , 1 claim 5 ,3-di-tert-butylimidazol-2-ylidene claim 5 , 1 claim 5 ,3-di-tert-butylimidazolidin-2-ylidene claim 5 , 1 ...

TUNGSTEN OXO ALKYLIDENE COMPLEXES FOR Z SELECTIVE OLEFIN METATHESIS

The current application describes tungsten oxo alkylidene complexes for olefin metathesis. 149-. (canceled)51. The method of claim 50 , wherein:{'sup': '3′', 'sub': '3', 'R is —OR or —OSi(R);'}{'sup': '4', 'sub': '2', 'Ris —N(R), or an optionally substituted group selected from a 5-6 membered monocyclic heteroaryl ring having at least one nitrogen and 0-3 additional heteroatoms independently selected from nitrogen, oxygen, or sulfur, a 4-7 membered saturated or partially unsaturated heterocyclic ring having at least one nitrogen and 0-2 additional heteroatoms independently selected from nitrogen, oxygen, or sulfur, a 7-10 membered bicyclic saturated or partially unsaturated heterocyclic ring having at least one nitrogen and 0-4 additional heteroatoms independently selected from nitrogen, oxygen, or sulfur, or an 8-10 membered bicyclic heteroaryl ring having at least one nitrogen and 0-4 additional heteroatoms independently selected from nitrogen, oxygen, or sulfur.'}52. The method of claim 50 , wherein the compound of formula I-c promotes Z-selective olefin metathesis.53. The method of claim 50 , wherein R is —OR claim 50 , wherein R is optionally substituted phenyl.55. The method of claim 51 , wherein Ris —N(R) claim 51 , wherein the two R groups are taken together with the nitrogen to form an optionally substituted 3-8 membered saturated claim 51 , partially unsaturated claim 51 , or aryl ring having 0-3 additional heteroatoms not including the N atom from —N(R)independently selected from nitrogen claim 51 , oxygen claim 51 , or sulfur.58. The method of claim 50 , wherein:{'sup': '3′', 'R is —OR; and'}{'sup': '4', 'Ris —OR.'}59. The method of claim 50 , wherein:{'sup': '3′', 'sub': '3', 'R is —OSi(R); and'}{'sup': '4', 'Ris —OR.'}60. The method of claim 50 , wherein the compound of formula I-c is W(O)(CH-t-Bu)(OHMT) claim 50 , W(O)(CH-t-Bu)(OHIPT) claim 50 , W(O)(CH-t-Bu)(DFTO) claim 50 , or WO(CH-t-Bu)[OSi(t-Bu)](OHMT).61. The method of claim 50 , wherein n is 0. ...

Catalyst for preparing 1,5-pentanediol via hydrogenolysis of tetrahydrofurfuryl alcohol, method and application thereof

The present invention provides a method for preparing 1,5-pentanediol via hydrogenolysis of tetrahydrofurfuryl alcohol. The catalyst used in the method is prepared by supporting a noble metal and a promoter on an organic polymer supporter or an inorganic hybrid material supporter, wherein the supporter is functionalized by a nitrogen-containing ligand. When the catalyst is used in the hydrogenolysis of tetrahydrofurfuryl alcohol to prepare 1,5-pentanediol, a good reaction activity and a high selectivity can be achieved. The promoter and the nitrogen-containing ligand in the supporter are bound to the catalyst through coordination, thereby the loss of the promoter is significantly decreased, and the catalyst has a particularly high stability. The lifetime investigation of the catalyst, which has been reused many times or used continuously for a long term, suggests that the catalyst has no obvious change in performance, thus reducing the overall process production cost.

Molecular molybdenum persulfide and related catalysts for generating hydrogen from water

New metal persulfido compositions of matter are described. In one embodiment the metal is molybdenum and the metal persulfido complex mimics the structure and function of the triangular active edge site fragments of MoS 2 , a material that is the current industry standard for petroleum hydro desulfurization, as well as a promising low-cost alternative to platinum for electrocatalytic hydrogen production. This molecular [(PY5W 2 )MoS 2 ] x+ containing catalyst is capable of generating hydrogen from acidic-buffered water or even seawater at very low overpotentials at a turnover frequency rate in excess of 500 moles H 2 per mole catalyst per second, with a turnover number (over a 20 hour period) of at least 19,000,000 moles H 2 per mole of catalyst.

PRODUCTION OF FATTY OLEFIN DERIVATIVES VIA OLEFIN METATHESIS

In one aspect, the invention provides a method for synthesizing a fatty olefin derivative. The method includes: a) contacting an olefin according to Formula I 110-. (canceled)13. The method of claim 12 , wherein the unsaturated fatty alcohol is the fatty olefin derivative.14. The method of claim 13 , wherein Ris methyl claim 13 , subscript y is 7 claim 13 , and subscript z is 3.16. The method of claim 15 , wherein Ris methyl claim 15 , subscript y is 7 claim 15 , subscript z is 3 claim 15 , and Ris acetyl.19. The method of claim 18 , wherein Ris H claim 18 , Ris methyl claim 18 , subscript y is 7 claim 18 , and subscript z is 3.21. The method of claim 20 , wherein:{'sup': '7a', 'Ris selected from the group consisting of alkyl, alkoxy, heteroalkyl, aryl, aryloxy, and heteroaryl, each of which is optionally substituted; and'}{'sup': '8a', 'X is O or S and Ris optionally substituted aryl; or'}{'sup': 8a', '12a', '13a', '14a, 'X is O and Ris CRRR.'}22. The method of claim 20 , wherein{'sup': '3a', 'Ris selected from the group consisting of 2,6-dimethylphenyl; 2,6-diisopropylphenyl;'}2,6-dichlorophenyl; and adamant-1-yl;{'sup': '4a', 'sub': 3', '2', '6', '5', '3', '3, 'Ris selected from the group consisting of —C(CH)CHand —C(CH);'}{'sup': '5a', 'Ris H;'}{'sup': '7a', 'Ris selected from the group consisting of pyrrol-1-yl; 2,5-dimethyl-pyrrol-1-yl; triphenylsilyloxy; triisopropylsilyloxy; 2-phenyl-1,1,1,3,3,3-hexafluoro-prop-2-yloxy; 2-methyl-1,1,1,3,3,3-hexafluoro-prop-2-yloxy; 9-phenyl-fluorene-9-yloxy; 2,6-diphenyl-phenoxy; and t-butyloxy; and'}{'sup': 8a', '8a, 'Ris R—X—, wherein'}X═O and{'sup': '8a', 'Ris phenyl which bears two substituents in the ortho positions with respect to O, or which bears at least three substituents, from which two substituents are in the ortho positions with respect to O and one substituent is in the para position with respect to O; or'}{'sup': '8a', 'Ris selected from the group consisting of optionally substituted 8-(naphthalene-1-yl)- ...

METATHESIS CATALYSTS AND REACTIONS USING THE CATALYSTS

The invention relates to a method of forming an olefin from a first olefin and a second olefin in a metathesis reaction, comprising step (i): (i) reacting the first olefin with the second olefin in the presence of a compound that catalyzes said metathesis reaction such that the molar ratio of said compound to the first or the second olefin is from 1:500 or less, and the conversion of the first or the second olefin to said olefin is at least 50%, characterized in that as compound that catalyzes said metathesis reaction a compound of formula (A) is used: wherein M is Mo or W; Ris aryl, heteroaryl, alkyl, or heteroalkyl; optionally substituted; Rand Rcan be the same or different and are hydrogen, alkyl, alkenyl, heteroalkyl, heteroalkenyl, aryl, or heteroaryl; optionally substituted; Ris alkyl, alkoxy, heteroalkyl, aryl, heteroaryl, silylalkyl, silyloxy, optionally substituted; and Ris a residue R—X—, wherein X═O and Ris aryl, optionally substituted; or X═S and Ris aryl, optionally substituted; or X═O and Ris (R, R, R)Si; wherein R, R, Rare alkyl or phenyl, optionally substituted; or X═O and Ris (R, R, R)C, wherein R, R, Rare independently selected from phenyl, alkyl; optionally substituted; and to the catalysts used in the method. 2. Method of claim 1 , whereinM=Mo or W;{'sup': '1', 'Ris aryl or adamant-1-yl; optionally substituted;'}{'sup': '2', 'sub': 3', '2', '6', '5', '3', '3, 'Ris —C(CH)CHor —C(CH);'}{'sup': '3', 'Ris H;'}{'sup': '5', 'Ris alkoxy, heteroaryl, silyloxy, or aryloxy; optionally substituted; and'}{'sup': 4', '6, 'Ris a residue R—X—, wherein'}{'sup': '6', 'sub': 1', '4', '1', '4, 'X═O and Ris phenyl substituted with up to five substituents independently selected from alkyl, preferably C-Calkyl, such as methyl, isopropyl or t-butyl, alkoxy, preferably C-Calkoxy, phenoxy, phenyl, halogen, optionally substituted; or'}{'sup': '6', 'X═O and Ris 8-(naphthalene-1-yl)-naphthalene-1-yl, optionally substituted; or'}{'sup': '6', 'X═O and Ris 8-phenlynaphthalene- ...

COMPOUNDS AND THE USE THEREOF IN METATHESIS REACTIONS

The disclosure provides Group 6 complexes, which, in some embodiments, are useful for catalyzing olefin metathesis reactions. In some embodiments, the compounds are compounds of the following formula (I) wherein: M is a Group 6 metal atom; X is an oxygen atom, ═N—R, ═N—N(R)(R) or ═N—O—R, Rand R independently being various substituents, such as aryl or heteroaryl, each optionally substituted; n is 0 or 1; Ris a neutral ligand; Ris hydrogen or an organic substituent; Ris an aryl or heteroaryl group, each optionally substituted; Ris an anionic ligand; and Ris an anionic ligand, such as a pyrrolide, a pyrazolide, an imidazolide, an indolide, an azaindolide, or an indazolide, each optionally substituted. 2. The compound of claim 1 , wherein M is Mo or W.3. The compound of claim 2 , where M is Mo.4. The compound of claim 2 , where M is W.5. The compound of any one of to claim 2 , wherein n is 0.6. The compound of any one of to claim 2 , wherein X is an oxygen atom.7. The compound of any one of to claim 2 , wherein X is ═N—R.8. The compound of claim 7 , wherein Ris Ccycloalkyl claim 7 , Caryl claim 7 , or Cheteroaryl claim 7 , each of which is optionally substituted one or more times with substituents selected independently from R claim 7 , wherein any two adjacent Roptionally combine to form a ring claim 7 , which is optionally substituted one or more times with substituents selected independently from R.9. The compound of claim 8 , wherein Ris Ccycloalkyl claim 8 , phenyl claim 8 , 2-pyridinyl claim 8 , 3-pyridinyl claim 8 , 4-pyridinyl claim 8 , 3-pyridazinyl claim 8 , 4-pyridazinyl claim 8 , 2-pyrimidinyl claim 8 , 4-pyrimidinyl claim 8 , 5-pyrimidinyl claim 8 , or 2-pyrazinyl claim 8 , each of which is optionally substituted one or more times with substituents selected independently from R claim 8 , wherein any two adjacent Roptionally combine to form a ring claim 8 , which is optionally substituted one or more times with substituents selected independently from R.10. ...

Synthesis of pheromones and related materials via olefin metathesis

Methods for preparation of olefins, including 8- and 11-unsaturated monoenes and polyenes, via transition metathesis-based synthetic routes are described. Metathesis reactions in the methods are catalyzed by transition metal catalysts including tungsten-, molybdenum-, and ruthenium-based catalysts. The olefins include insect pheromones useful in a number of agricultural applications.

Hybrid Catalyst for Olefin Metathesis

An olefin metathesis catalyst and method for producing same is provided. 1. A method of preparing a hybrid metathesis catalyst , the method comprising the steps of:contacting a metathesis catalyst present in an organic solvent with a silica support containing a halogen or hydroxyl ligand capable of participating in a ligand exchange reaction;appending the metathesis catalyst to the silica support via the ligand exchange reaction to form a hybrid metathesis catalyst; andrecovering the hybrid metathesis catalyst from the organic solvent.2. The method of claim 1 , wherein the silica support is mesoporous silica.3. The method of claim 1 , wherein the metathesis catalyst contains a metal selected from the group consisting of tungsten claim 1 , molybdenum and ruthenium.4. The method of claim 1 , wherein the metathesis catalyst is benzylidene-bis(tricyclohexylphosphine)dichlororuthenium.5. The method of claim 1 , wherein the metathesis catalyst is benzylidene[1 claim 1 ,3-bis(2 claim 1 ,4 claim 1 ,6-trimethylphenyl)-2-imidazolidinylidene]dichloro(tricyclohexylphosphine)ruthenium.6. The method of claim 1 , wherein the organic solvent is toluene.7. The method of claim 1 , wherein the step of contacting the metathesis catalyst with the silica support is performed by an incipient wetness method.8. A method for the metathesis of butene to produce propene claim 1 , the method comprising the steps of: contacting a metathesis catalyst present in an organic solvent with a silica support containing a halogen or hydroxyl ligand capable of participating in a ligand exchange reaction;', 'appending the metathesis catalyst to the silica support via the ligand exchange reaction to form the hybrid metathesis catalyst; and', 'recovering the hybrid metathesis catalyst from the organic solvent;, 'providing, to a reaction chamber, a hybrid metathesis catalyst prepared bycontacting, in the reaction chamber, an olefin feedstream containing one or both of 1-butene or 2-butene with the hybrid ...

Catalytic Remedy for Advanced UCO Bleed Reduction in Recycle Hydrocracking Operations

A catalyst system has been designed that disrupts the sedimentation process. The catalyst system achieves this by saturating key feed components before the feed components are stripped into their incompatible aromatic cores. The efficacy of this disruptive catalyst system is particularly evident in a hydrocracker configuration that runs in two-stage-recycle operation. The catalyst is a self-supported multi-metallic catalyst prepared from a precursor in the hydroxide form, and the catalyst must be toward the top level of the second stage of the two-stage system.

N-Heterocyclic Carbene Complexes Of Metal Imido Alkylidenes And Metal OXO Alkylidenes, And The Use Of Same

The invention relates to an N-heterocyclic carbene complex of general formulas I to IV (I) (II) (III) (IV), according to which A1 stands for NR2 or PR2, A2 stands for CR2 R2′, NR2, PR2, 0 or S, A3 stands for N or P, and C stands for a carbene carbon atom, ring B is an unsubstituted or a mono or poly-substituted 5 to 7-membered ring, substituents R2 and R2′ stand, inter alia, for a linear or branched C1-Cw-alkyl group and, if N and N each stand for NR2 or PR2, are the same or different, M in formulas I, II, III or IV stands for Cr, Mo or W, X 1 or X2 in formulas I to IV are the same or different and represent, inter alia, C1-C1s carboxylates and C1-C1s-alkoxides, Y is inter alia oxygen or sulphur, Z is inter alia a linear or branched C1-Cw-alkylenoxy group, and R 1 and R1′ in formulas I to IV are, inter alia, an aliphatic or aromatic group. These compounds are particularly suitable for use as catalysts for olefin metathesis reactions and have the advantage, compared to known Schrock carbene complexes, of displaying clearly increased tolerance to functional groups such as, in particular, aldehydes, secondary amines, nitriles, carboxylic acids and alcohols. 2. A compound as claimed in claim 1 , characterized in that the ring B is a heterocycle selected from the group comprising 1 claim 1 ,3-disubstituted imidazol-2-ylidenes claim 1 , 1 claim 1 ,3-disubstituted imidazolin-2-ylidenes claim 1 , 1 claim 1 ,3-disubstituted tetrahydro-pyrimidin-2-ylidenes claim 1 , 1 claim 1 ,3-disubstituted diazepin-2-ylidenes claim 1 , 1 claim 1 ,3-disubstituted dihydrodiazepin-2-ylidenes claim 1 , 1 claim 1 ,3-disubstituted tetrahydrodiazepin-2-ylidenes claim 1 , N-substituted thiazol-2-ylidenes claim 1 , N-substituted thiazolin-2-ylidenes claim 1 , N-substituted triazol-2-ylidenes claim 1 , mono- or polysubstituted dihydrotriazol-2-ylidenes claim 1 , mono- or polysubstituted triazolin-2-ylidenes claim 1 , N-substituted thiadiazol-2-ylidenes claim 1 , mono- or polysubstituted thiadiazolin ...

High-weight glyceride oligomers and methods of making the same

Oligomers of certain glyceride compounds are generally disclosed herein. In some embodiments, the glyceride compounds include natural oil glycerides, such as glycerides derived from natural oils, such as palm oil, soybean oil, canola oil, and the like. Compositions containing such glyceride oligomers are also disclosed herein. Processes for making such glyceride oligomers are also disclosed herein. In some embodiments, the processes for making such compounds include reacting a plurality of unsaturated glyceride compounds in the presence of a metathesis catalyst.

Phenoxyimine-Based Complexes and Related Ring-Opening Metathesis Polymerization Methods

Phenoxyimine-based complexes, when activated, are suitable for catalyzing ring-opening metathesis polymerization (ROMP) reactions of cyclopentene and a comonomer under mild reaction conditions, for example, at reaction temperatures of about −196° C. and about 70° C. in diluents like toluene. The use of such activated phenoxyimine-based complexes may favor polymer products with a high cis-content. 4. The method of claim 3 , wherein the contacting is carried out at a temperature of between about −196° C. and about 70° C.5. The method of claim 3 , wherein the contacting is carried out at a temperature of between about −196° C. and about 25° C.6. The method of claim 3 , wherein the diluent is pentane claim 3 , hexane claim 3 , heptane claim 3 , cyclohexane claim 3 , benzene claim 3 , toluene claim 3 , xylene claim 3 , ethyl benzene claim 3 , and any combination thereof.8. The method of claim 7 , wherein Formula (L′) is 3-(((2 claim 7 ,6-dimethylphenyl)imino)methyl)-[1 claim 7 ,1′-biphenyl]-2-ol and each X is Cl.9. The method of claim 7 , wherein Formula (L′) is 3-(((2-isopropylphenyl)imino)methyl)-[1 claim 7 ,1′-biphenyl]-2-ol and each X is Cl.11. The method of claim 10 , wherein the contacting is carried out at a temperature of about −50° C. and about 50° C.12. The method of claim 10 , wherein the contacting is carried out at a temperature of about 0° C. and about 25° C.14. The method of claim 13 , wherein Ris methyl and Ris methyl.15. The method of claim 13 , wherein Ris isopropyl and Ris hydrogen.16. The method of claim 10 , wherein the cyclic olefin monomer is cyclopentene. This application claims the benefit of U.S. Provisional Application No. 62/895,600, filed Sep. 4, 2019, the disclosure of which is incorporated herein by reference.The present disclosure relates to catalysts for ring-opening metathesis polymerization (ROMP) reactions.In organic synthesis, a metathesis reaction is a catalytic reaction in which recombination of the double bonds occurs between two ...

PARTICLES, PARTICLE DISPERSION, PARTICLE-DISPERSED RESIN COMPOSITION, PRODUCING METHOD THEREFOR, RESIN MOLDED ARTICLE, PRODUCING METHOD THEREFOR, CATALYST PARTICLES, CATALYST SOLUTION, CATALYST COMPOSITION, CATALYST MOLDED ARTICLE, TITANIUM COMPLEX, TITANIUM OXIDE PARTICLES AND PRODUCING METHOD THEREFOR

Organic-inorganic composite particles that can be dispersed in a solvent and/or a resin as primary particles having an organic group on the surface of inorganic particles, the organic-inorganic composite particles having negative birefringence. 1. Catalyst particles comprising inorganic particles with a catalytic action and an organic group that binds to the surface of the inorganic particles , and having a configuration that does not allow the inorganic particles to contact with each other by steric hindrance of the organic group.2. The catalyst particles according to claim 1 , having a catalytic action for a gas and/or a liquid.3. The catalyst particles according to claim 1 , having a photocatalytic action for a gas and/or a liquid.4. The catalyst particles according to claim 1 , dispersed as primary particles in a solvent and/or a resin.5. The catalyst particles according to claim 1 , containing a plurality of mutually different types of organic groups.6. The catalyst particles according to claim 1 , wherein the organic group is bound to the surface of the inorganic particles via a binding group claim 1 , and the binding group contains a phosphoric acid group and/or a phosphoric acid ester group.7. The catalyst particles according to claim 1 , wherein the inorganic particles contain an oxide.8. The catalyst particles according to claim 1 , wherein the inorganic particles contain at least one oxide selected from the group consisting of TiO claim 1 , WOand SrTiO.9. The catalyst particles according to claim 8 , wherein the inorganic particles further contain at least one inorganic substance selected from the group consisting of Pt claim 8 , Pd claim 8 , Cu claim 8 , CuO claim 8 , RuOand NiO.10. The catalyst particles according to claim 1 , wherein the catalyst particles have an average maximum length of 450 nm or less. This is a divisional of U.S. application Ser. No. 13/640,911 filed Dec. 31, 2012, which is a national stage of PCT/JP2011/059040 filed Apr. 11, 2011, ...

Olefin metathesis catalysts and related methods

The present invention provides methods for the synthesis of catalysts and precursors thereof. Methods of the invention may comprise combining a catalyst precursor and at least one ligand to generate a catalytically active species, often under mild conditions and in high yields. In some cases, a wide variety of catalysts may be synthesized from a single catalyst precursor. Methods of the invention may also include the preparation of catalysts which, under reaction conditions known in the art, may have been difficult or impossible to prepare and/or isolate due to, for example, steric crowding at the metal center. The present invention also provides catalyst compositions, and precursors thereof, which may be useful in various chemical reactions including olefin metathesis. In some cases, methods of the invention may reduce the number of synthetic and purification steps required to produce catalysts and/or other reaction products, as well as reducing time, cost, and waste production.

FUEL CELL ELECTRODE HAVING POROUS CARBON CORE WITH MACROCYCLIC METAL CHELATES THEREON

The invention concerns a method for manufacturing of an electrocatalyst comprising a porous carbon support material, a catalytic material in the form of at least one type of metal, and macrocyclic compounds chemically bound to the carbon support and capable of forming complexes with single metal ions of said metal or metals, said method comprising the steps of: i) providing a template capable of acting as pore structure directing agent during formation of a highly porous electrically conducting templated carbon substrate, ii) mixing the template with one or several precursor substances of the catalytic material, the macrocyclic compounds and carbon, iii) exposing the mixture of the template and the precursor substances to a carbonization process during which the precursors react and transform the mixture into a carbonized template composite in winch the carbon part of the composite is chemically bound to macrocyclic compounds present in complexes with the metal or metals. The invention also concerns an electrocatalyst for electrochemical reactions, a method for manufacturing of a membrane electrode assembly using such an electrocatalyst and to a fuel cell making use of such an electrocatalyst. 176-. (canceled)77. A method for manufacturing of an electrocatalyst comprising a porous carbon support material and a catalytic material of metal complexes of macrocyclic compounds chemically bound to the carbon support , said method comprising the steps of:i) providing a template capable of acting as pore structure directing agent during formation of a highly porous electrically conducting template carbon substrate;ii) mixing the template with:1) one or several precursor substances of the carbon support,2) one or several precursor substances of the macrocyclic compounds, and3) one or several metal salts or one or several metal salts in a solvent,wherein the precursor substances of the carbon support and the precursor substances of the macrocyclic compounds may be the same or ...

COMPOUNDS HAVING LOW IONIZATION ENERGY

The present invention provides compounds that are soluble in a non-polar solvent and having a low ionization energy and negative oxidation potentials in tetrahydrofuran (THF). The present invention also provides a method for producing and using the same. 1. A compound comprising a metal and an anionic organic ligand , wherein said compound has an onset ionization energy of about 4 eV or less and is soluble in an organic solvent , and wherein said metal is selected from the group consisting of tungsten and chromium.2. The compound of claim 1 , wherein said compound is soluble in an aprotic organic solvent.3. The compound of claim 1 , wherein said compound is soluble in a nonpolar organic solvent.4. The compound of claim 1 , wherein said compound has an oxidation potential in THF of about −1.5 V or less.5. The compound of claim 4 , wherein said compound has an oxidation potential in THF of about −1.8 V or less.6. The compound of claim 1 , wherein said compound has an onset ionization energy of about 3.6 eV or less.7. The compound of claim 1 , wherein the solubility of said compound in THF is at least 0.1 g/L.8. The compound of claim 7 , wherein the solubility of said compound in THF is at least 1 g/L.9. The compound of claim 1 , wherein the solubility of said compound in benzene is at least 0.1 g/L.10. The compound of claim 7 , wherein the solubility of said compound in benzene is at least 1 g/L.11. A compound comprising a metal and an organic ligand claim 7 , wherein said compound has an oxidation potential in THF of about −1.5 V or less claim 7 , and is soluble in an organic solvent claim 7 , and wherein said metal is selected from the group consisting of tungsten and chromium.12. The compound of claim 11 , wherein said compound has an oxidation potential in THF of about −1.8 V or less.13. The compound of claim 11 , wherein said compound has an onset ionization energy of about 4 eV or less.14. The compound of claim 13 , wherein said compound has an onset ionization ...

CATALYTIC ETHENOLYSIS OF OPTIONALLY-FUNCTIONALIZED INTERNAL UNSATURATED OLEFINS

The disclosure relates to a process for obtaining alpha-olefins by heterogeneous catalytic ethenolysis of optionally-functionalized unsaturated, in particular mono-unsaturated, olefins. The disclosure also relates to new supported catalysts that can be used in the process and to a method for preparing the supported catalysts. 1. A process for obtaining alpha-olefins , said process comprising a step of reacting optionally-functionalized internal unsaturated olefins with ethylene in the presence of a supported catalyst selected from a supported oxo-molybdenum or imido-molybdenum catalyst or a supported oxo-tungsten catalyst , [{'br': None, 'sub': 2', '2, 'sup': 1', '2, '□-W(═O)X(CHR)(CHR)\u2003\u2003(I)'}, {'br': None, 'sub': 2', '2', '2, 'sup': 1', '2, '(□)W(═O)(CHR)(CHR)\u2003\u2003(III)'}], 'said oxo-tungsten catalyst being selected from one of the following oxo-tungsten compounds {'br': None, 'sup': k', '4', '5, '□-OLO—Mo(═NR)G(═CHR)\u2003\u2003(VIII)'}, 'said imido-molybdenum catalyst being selected from one of the following imido-molybdenum compoundswherein,□ corresponds to a support,{'sup': 1', '2', '1', '2, 'sub': 3', '3', '3', '3', '3', '2, 'Rand R, are independently to each other, selected from hydrogen, linear or branched alkyl groups, —C(CH), -Phenyl, —Si(CH), —C(CH)Ph, being understood that Rand Rcannot be both hydrogen in formula (III),'}{'sub': 3', '3, 'X is selected from alkoxy groups, aryloxy groups, —Si(CH), siloxy groups or pyrolidyl groups,'}{'sup': '4', 'Rrepresents a radical selected from aliphatic and aromatic hydrocarbyl radicals, optionally comprising one or more heteroatoms,'}{'sup': '5', 'sub': 3', '3', '3', '3', '3', '2, 'Ris selected from hydrogen, linear or branched alkyl groups, —C(CH), -Phenyl (Ph), —Si(CH), or —C(CH)Ph,'}G is selected from alkoxy groups, aryloxy groups, siloxy groups or pyrolidyl groups,{'sup': 'k', 'Lrepresents a divalent linker.'}2. The process according to claim 1 , wherein the optionally-functionalized internal ...

Metathesis Catalyst System for Polymerizing Cycloolefins

A process to form a cyclic olefin polymerization catalyst which includes contacting a metal alkoxide with a transition metal halide to form a transition metal precatalyst, and contacting the transition metal precatalyst with a metal alkyl activator to form the activated catalyst comprising a transition metal carbene moiety. A cyclic olefin polymerization process is also disclosed. 6. The process of claim 5 , wherein the reaction mixture further comprises a metal alkyl activator (A) according to the formula MRX{'sup': 'u', 'wherein Mis a Group 1, 2, or 13 metal of valance u, preferably Li, Na, Ca, Mg, Al, or Ga;'}a is 1, 2, or 3;a≤u; andwhen present, X is halogen.7. The process of claim 1 , wherein Mis W claim 1 , Mo claim 1 , Nb claim 1 , or Ta;wherein X is Cl, F or a mixture thereof;or a combination thereof.8. The process of claim 1 , wherein two or more R′O— ligands are connected to form a single bidentate chelating moiety.13. The process of claim 1 , wherein a molar ratio of Mto M-R in metal alkyl activator MRXis from 1 to 2 to 1 to 15.14. The process of claim 1 , wherein the alkoxy ligand R′O— comprises a Cto Caromatic moiety and wherein the O atom directly bonds to the aromatic ring.23. A cyclic olefin polymerization process comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'sub': 4', '20, 'contacting a cyclic olefin polymerization catalyst according to with a C-Ccyclic olefin monomer comprising at least one cyclic olefin moiety in a polymerization reactor under conditions sufficient to form a reaction product mixture comprising a polymer, unreacted monomer, catalyst, and optionally a solvent; and'}recovering the polymer.24. The process of claim 23 , further comprising:i) separating the monomer from the reaction product mixture and recycling the monomer to the polymerization reactor;ii) contacting the recovered catalyst with an activator prior to recycling to the polymerization reactor;or a combination thereof.25. The process according to claim 23 , ...

PRODUCTION OF FATTY OLEFIN DERIVATIVES VIA OLEFIN METATHESIS

In one aspect, the invention provides a method for synthesizing a fatty olefin derivative. The method includes: a) contacting an olefin according to Formula I 128-. (canceled)30. The method of claim 29 , wherein subscript y is 7.31. The method of claim 29 , wherein Ris H claim 29 , Ris methyl claim 29 , Ris acetyl claim 29 , subscript y is 7 claim 29 , and subscript z is 3.34. The method of claim 29 , wherein the metathesis catalyst is of the formula LL′AA′M═CRRor LL′AA′M═(C═)CRR claim 29 , whereinM is ruthenium;L and L′ are each independently any neutral electron donor ligand and preferably selected from phosphine, sulfonated phosphine, phosphite, phosphinite, phosphonite, arsine, stibnite, ether, amine, amide, imine, sulfoxide, carboxyl, nitrosyl, pyridine, thioether, or heterocyclic carbenes; and{'sub': 1', '20', '1', '20', '2', '20', '1', '20', '1', '20', '1', '20', '1', '5', '1', '5', '1', '5', '1', '5, 'A and A′ are anionic ligands independently selected from halogen, hydrogen, C-Calkyl, aryl, C-Calkoxide, aryloxide, C-Calkoxycarbonyl, arylcarboxylate, C-Ccarboxylate, arylsulfonyl, C-Calkylsulfonyl, C-Calkylsulfinyl; each ligand optionally being substituted with C-Calkyl, halogen, C-Calkoxy; or with a phenyl group that is optionally substituted with halogen, C-Calkyl, or C-Calkoxy; and A and A′ together may optionally comprise a bidentate ligand; and'}{'sub': b', 'c', '1', '20', '1', '20', '1', '20', '1', '20', '1', '20', '1', '20', '1', '20', 'b', 'c', '1', '5', '1', '5', '1', '5', '1', '5, 'Rand Rare independently selected from hydrogen, C-Calkyl, aryl, C-Ccarboxylate, C-Calkoxy, aryloxy, C-Calkoxycarbonyl, C-Calkylthio, C-Calkylsulfonyl and C-Calkylsulfinyl, each of Rand Roptionally substituted with C-Calkyl, halogen, C-Calkoxy or with a phenyl group that is optionally substituted with halogen, C-Calkyl, or C-Calkoxy.'}38. The method of claim 37 , wherein the olefin is a linear C-Colefin claim 37 , the metathesis reaction part is a Δ-unsaturated fatty acid ...

ION PAIR CATALYSIS OF TUNGSTATE AND MOLYBDATE

The present invention relates to ion pair catalysts (I) comprising the cationic bisguanidinium ligand (A) and diperoxomolybdate anion (B). The present invention also relates to ion pair catalysts (III) comprising the cationic bisguanidinium ligand (C) and peroxotungstate anion (D). It further relates to the use of the said catalysts in the manufacture of enantiomerically enriched sulfoxides. 2. The complex of claim 1 , wherein:{'sub': 1', '1-3', '3, 'each Rindependently represents Calkyl-phenyl, which phenyl group is substituted by from two to four Rsubstituents;'}{'sub': 2', '4, 'each Rindependently represents phenyl, which group is unsubstituted or substituted by from one to two Rsubstituents;'}{'sub': 3', '4', '1-6', '3-6', '5, 'each Rand Rindependently represents fluoro, branched or unbranched Calkyl, Ccycloalkyl, which latter two groups are unsubstituted or substituted by one or more halogen atoms) or OR;'}{'sub': 1-3', '3-6, 'R5 represents branched or unbranched Calkyl or Ccycloalkyl, which groups are unsubstituted or substituted by one or more halogen atoms.'}3. (canceled)4. The complex of claim 1 , wherein the organic cation (A) is enantioenriched.5. The complex of claim 1 , where the organic cation (A) is selected from:(i) 1,4-bis((4S,5S)-1,3-bis(3,5-di-tert-butylbenzyl)-4,5-diphenylimidazolidin-2-ylidene)piperazine-1,4-diium;(ii) 1,4-bis((4R,5R)-1,3-bis(3,5-di-tert-butylbenzyl)-4,5-diphenylimidazolidin-2-ylidene)piperazine-1,4-diium;(iii) 1,4-bis((4S,5S)-1,3-bis(3,5-di-tert-butyl-4-methoxybenzyl)-4,5-diphenylimidazolidin-2-ylidene)piperazine-1,4-diium;(iv) 1,4-bis((4R,5R)-1,3-bis(3,5-di-tert-butyl-4-methoxybenzyl)-4,5-diphenylimidazolidin-2-ylidene)piperazine-1,4-diium;(v) 1,4-bis((4S,5S)-1,3-bis(3,5-di-tert-butyl-4-fluorobenzyl)-4,5-diphenylimidazolidin-2-ylidene)piperazine-1,4-diium; and(vi) 1,4-bis((4R,5R)-1,3-bis(3,5-di-tert-butyl-4-fluorobenzyl)-4,5-diphenylimidazolidin-2-ylidene)piperazine-1,4-diium.6. The complex of claim 5 , where the organic ...

HIGHLY Z-SELECTIVE OLEFIN METATHESIS

The present invention relates generally to catalysts and processes for the Z-selective formation of internal olefin(s) from terminal olefin(s) via homo-metathesis reactions. 139-. (canceled)41. The method of claim 40 , wherein the first molecule and the second molecule are identical.42. The method of claim 40 , wherein at least about 30% of the internal double bond of the product is formed as the Z-isomer.43. The method of claim 40 , wherein the reaction proceeds with a conversion of at least about 30%.45. The method of claim 40 , wherein one of Rand Ris a ligand containing oxygen bound to M claim 40 , optionally substituted claim 40 , and the other is a ligand containing nitrogen bound to M claim 40 , optionally substituted.46. The method of claim 45 , wherein the at least one ligand containing oxygen bound to M lacks a plane of symmetry.47. The method of claim 45 , wherein the ligand containing nitrogen bound to M is selected from the group consisting of pyrrolyl claim 45 , pyrazolyl claim 45 , pyridinyl claim 45 , pyrazinyl claim 45 , pyrimidinyl claim 45 , imidazolyl claim 45 , triazolyl claim 45 , tetrazolyl claim 45 , oxazolyl claim 45 , isoxazolyl claim 45 , thiazolyl claim 45 , isothiazolyl claim 45 , indolyl claim 45 , indazolyl claim 45 , carbazolyl claim 45 , morpholinyl claim 45 , piperidinyl claim 45 , and oxazinyl claim 45 , all optionally substituted.48. The method of claim 45 , wherein the ligand containing oxygen bound to M comprises a group having the formula —OSi(R) claim 45 , wherein each Rcan be the same or different and is aryl or alkyl claim 45 , optionally substituted.57. The method of claim 40 , wherein the catalyst has a structure selected from the group consisting of M(NAr)(Pyr)(CHR)(OHIPT) claim 40 , M(NAr)(Pyr)(CH)(OHIPT) claim 40 , M(NAr)(CHCMePh)(Pyr)(BiphenTMS) claim 40 , M(NAr)(CHCMePh)(MePyr)(BrBitet) claim 40 , M(NAr)(CHCMePh)(MePyr)(MesBitet) claim 40 , W(NAr)(CHCMePh)(MePyr)(OPhPh) claim 40 , M(NAr)(CHCMePh)(Pyr)((Trip)BitetTMS) ...

IMMOBILIZED METATHESIS TUNGSTEN CATALYSTS AND USE THEREOF IN OLEFIN METATHESIS

Compound of formula (I) wherein M is W; Ris H, aryl, heteroaryl, alkyl, or heteroalkyl, optionally substituted, respectively; Rand Rcan be the same or different and are alkyl, alkenyl, heteroalkyl, heteroalkenyl, aryl, or heteroaryl, optionally substituted, respectively, or hydrogen; Ris a residue R—X—, wherein Ris alkyl, aryl, heteroalkyl, heteroaryl, optionally substituted, respectively; (R, R, R)Si; wherein R, R, Rare independently alkyl, alkoxy, phenyl or phenoxy, optionally substituted, respectively; (R, R, R)C, wherein R, R, Rare independently phenyl, alkyl, optionally substituted, respectively; X═O, S, or NR, wherein Ris H; or alkyl or aryl, optionally substituted, respectively; or Ris R—CO—NR, wherein Rand NRhave the meaning as defined above, or wherein Rand Rtaken together form a carbon chain having from 2 to 6 carbon atoms; Ris a 4 to 8 membered N-containing carbon ring, wherein N is linked to M; and Ris a residue O—Si(O—), and represents silica to which M is linked forming a M-O—Si(O—)moiety, preferably wherein silica is comprised in a solid support; under the proviso that a compound in which R=2,6-diisopropylphenyl, Rdimethylpyrrol-1-yl, R=tBu, and R═H is excluded. 2. Compound of claim 1 , wherein{'sup': '1', 'sub': 1', '4', '1', '4', '3, 'Ris aryl or adamant-1-yl, optionally substituted, respectively; preferably wherein aryl is phenyl or naphthyl, or phenyl or naphthyl substituted with up to five substituents independently selected from C-Calkyl, C-Calkoxy, CF, F, Cl, Br; or phenyl or phenoxy, optionally substituted, respectively;'}{'sup': '2', 'sub': 3', '2', '6', '5', '3', '3, 'Ris —C(CH)CHor —C(CH);'}{'sup': '3', 'Ris H;'}{'sup': 5', '6, 'claim-text': [{'sup': '6', 'sub': 1', '4', '1', '4, 'X═O and Ris phenyl or phenyl substituted with up to five substituents independently selected from alkyl, preferably C-Calkyl, such as methyl, isopropyl or t-butyl; alkoxy, preferably C-Calkoxy; phenoxy, phenyl, optionally substituted, respectively; or halogen; or ...

COMPOUNDS AND THE USE THEREOF IN METATHESIS REACTIONS

The disclosure provides Group 6 complexes, which, in some embodiments, are useful for catalyzing olefin metathesis reactions. In some embodiments, the compounds are compounds of the following formula: 2. The compound of claim 1 , wherein Ris phenyl claim 1 , 2 claim 1 ,6-dichlorophenyl claim 1 , 2 claim 1 ,6-dimethylphenyl claim 1 , 2 claim 1 ,6-diisopropylphenyl claim 1 , 2-trifluoromethylphenyl claim 1 , pentafluorophenyl claim 1 , tert-butyl claim 1 , or 1-adamantyl.3. The compound of claim 1 , wherein Ris pyrrol-1-yl claim 1 , 2 claim 1 ,5-dimethylpyrrol-1-yl claim 1 , 2 claim 1 ,5-diphenylpyrrol-1-yl claim 1 , or indol-1-yl.5. The compound of claim 1 , wherein Ris methyloxy claim 1 , ethyloxy claim 1 , or isopropyloxy.6. The compound of claim 1 , wherein Rand Rare independently a hydrogen atom claim 1 , methyl claim 1 , a halogen atom claim 1 , or methyloxy.7. A method for carrying out a metathesis reaction claim 1 , the method comprising:providing a first compound having one or more carbon-carbon double bonds; and{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'reacting the first compound via a metathesis reaction in the presence of a compound of .'}8. The method of claim 7 , wherein the first compound has two or more carbon-carbon double bonds.9. The method of claim 8 , wherein the metathesis reaction is a ring-closing metathesis reaction between two of the two or more carbon-carbon double bonds of the first compound.10. A method of carrying out a metathesis reaction claim 8 , the method comprising:providing a first compound having one or more carbon-carbon double bond and a second compound having one or more carbon-carbon double bonds; and{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'reacting the first compound and the second compound via a metathesis reaction in the presence of a compound of .'}11. The method of claim 10 , wherein the first compound and the second compound are the same compound.12. The method of claim 10 , wherein the first compound ...

METATHESIS CATALYSTS AND METHODS THEREOF

The present application provides, among other things, compounds and methods for metathesis reactions. In some embodiments, the present disclosure provides methods for preparing alkenyl halide with regioselectivity and/or stereoselectivity. In some embodiments, the present disclosure provides methods for preparing alkenyl halide with regioselectivity and Z-selectivity. In some embodiments, the present disclosure provides methods for preparing alkenyl halide with regioselectivity and E-selectivity. In some embodiments, provided technologies are particularly useful for preparing alkenyl fluorides. In some embodiments, a provided compound useful for metathesis reactions has the structure of formula II-a. In some embodiments, a provided compound useful for metathesis reactions has the structure of formula II-b. 120-. (canceled)22. The compound of claim 21 , wherein M is Mo. This application is a divisional application of U.S. patent application Ser. No. 14/933,741, filed Nov. 5, 2015, which claims priority to U.S. Provisional Application No. 62/075,315, filed Nov. 5, 2014, the entirety of each of which is incorporated herein by reference.This invention was made with government support under Grant No. GM59426 awarded by the National Institute of Health and Grant No. CHE-1362763 awarded by the National Science Foundation. The U.S. government has certain rights in the invention.The present invention generally relates to metathesis reactions.Catalytic metathesis has transformed chemical synthesis and offers exceptionally efficient pathways for the synthesis of many commercially important chemicals including biologically active molecules, oleochemicals, renewables, fine chemicals, and polymeric materials. There remains an unmet need for improved methods and catalysts for metathesis reactions, for example, in terms of better catalyst stability and/or activity, efficiency and stereoselectivity.Among other things, the present disclosure recognizes that it is particularly ...

Z-SELECTIVE RING-CLOSING METATHESIS REACTIONS

The present invention relates generally to olefin metathesis. In some embodiments, the present invention provides methods for Z-selective ring-closing metathesis. 111-. (canceled)14. The metal complex of claim 12 , wherein Ris an optionally substituted group selected from a 5-6 membered monocyclic heteroaryl ring having at least one nitrogen; wherein Ris coordinated to M via nitrogen.17. The metal complex of claim 15 , wherein Ris an optionally substituted group selected from a 5-6 membered monocyclic heteroaryl ring having at least one nitrogen; wherein Ris coordinated to M via nitrogen. This application is a continuation application of U.S. patent application Ser. No. 14/641,293, filed Mar. 6, 2015, which is a divisional application of U.S. patent application Ser. No. 13/487,067, filed Jun. 1, 2012, now U.S. Pat. No. 9,073,801, which claims priority to U.S. Provisional Application Ser. No. 61/492,996, filed Jun. 3, 2011, and 61/598,307, filed Feb. 13, 2012, the entirety of each of which is incorporated herein by reference.This invention was made with the support under the following government contracts: GM59426 and GM52496, both awarded by the National Institute of Health. The government has certain rights in the invention.The present invention generally relates to Z-selective ring-closing metathesis reactions.Catalytic olefin metathesis has transformed chemical synthesis and offers exceptionally efficient pathways for synthesis of alkenes. Many biologically active molecules are macrocycles that contain alkenes or other commonly occurring functional groups, such as an epoxide, diol or cyclopropane, which can be accessed via the carbon-carbon double bond. One of the most widely utilized protocols for synthesis of large rings is catalytic ring-closing metathesis (RCM). In most cases, however, macrocyclic RCM proceeds with minimal control of alkene stereoselectivity; this shortcoming is particularly costly in the case of complex molecules, since ring closure is ...

PRODUCTION OF FATTY OLEFIN DERIVATIVES VIA OLEFIN METATHESIS

In one aspect, the invention provides a method for synthesizing a fatty olefin derivative. The method includes: a) contacting an olefin according to Formula I 2. The method of claim 1 , wherein{'sub': 3', '12, 'sup': '9', 'the olefin according to Formula I is a linear C-Calpha olefin, the metathesis reaction partner according to Formula IIb is a Δ-unsaturated fatty acid alkyl ester,'}the metathesis catalyst is a Z-selective metathesis catalyst, and{'sub': 11', '20, 'the metathesis product according to Formula IIIb is a C-C(Z)-9-unsaturated fatty acid alkyl ester.'}3. The method of claim 2 , wherein converting the metathesis product to the fatty olefin derivative comprises contacting the C-C(Z)-9-unsaturated fatty acid alkyl ester with a reducing agent under conditions sufficient to form a C-C(Z)-9-fatty alcohol.4. The method of claim 3 , wherein the reducing agent is sodium bis(2-methoxyethoxy)aluminum hydride.5. The method of claim 3 , wherein converting the metathesis product to the fatty olefin derivative further comprises contacting the C-C(Z)-9-fatty alcohol with an acylating agent in the presence of a base under conditions sufficient to form an acetate ester of the C-C(Z)-9-fatty alcohol.6. The method of claim 5 , wherein the acylating agent is acetic anhydride.7. The method of claim 3 , wherein converting the metathesis product to the fatty olefin derivative further comprises oxidizing the C-C(Z)-9-fatty alcohol to form a C-C(Z)-9-alkenal.8. The method of claim 2 , wherein converting the metathesis product to the fatty olefin derivative comprises contacting the C-C(Z)-9-fatty acid alkyl ester with a reducing agent under conditions sufficient to form a C-C(Z)-9-alkenal.9. The method of claim 8 , wherein the reducing agent is amine-modifed sodium bis(2-methoxyethoxy)aluminumhydride.10. The method of claim 1 , wherein:the fatty acid derivative is (Z)-tetradec-9-en-1-yl acetate;the olefin according to Formula I is hex-1-ene,{'sup': '9', 'the metathesis reaction ...

USE OF IMMOBILIZED MOLYBDENUM- AND TUNGSTEN-CONTAINING CATALYSTS IN OLEFIN CROSS METATHESIS

Method of forming an olefin from a first olefin and a second olefin in a metathesis reaction, comprising step (i): (i) reacting the first olefin with the second olefin in the presence of a silica supported Mo- or W-alkylidene catalyst, wherein the first olefin and the second olefin are different from one another. 1. Method of forming an olefin from a first olefin and a second olefin in a metathesis reaction , comprising step (i):(i) reacting the first olefin with the second olefin in the presence of a silica supported Mo-alkylidene or W-alkylidene catalyst,wherein the first olefin and the second olefin are different from one another.2. Method of claim 1 , wherein(a) the first olefin is a cyclic olefin and the second olefin is a cyclic olefin; or(b) the first olefin is a cyclic olefin and the second olefin is a non-cyclic olefin; or(c) the first olefin is a non-cyclic olefin and the second olefin is a non-cyclic olefin.3. Method of or claim 1 , wherein the first olefin or the second olefin is a C-Colefin.4. Method of any one of the preceding claims claim 1 , wherein the first olefin has an internal olefinic double bond and the second olefin is ethylene claim 1 , preferably wherein the first olefin is 2-butene.6. Method of claim 5 , wherein{'sup': '1', 'Ris aryl or adamant-1-yl, optionally substituted, respectively; preferably wherein'}{'sup': '1', 'sub': 1', '4', '1', '4', '3, 'Ris phenyl or phenyl substituted with up to five substituents independently selected from C-Calkyl, C-Calkoxy, CF, F, Cl, Br; or phenyl or phenoxy, optionally substituted, respectively;'}{'sup': '2', 'sub': 3', '2', '6', '5', '3', '3, 'Ris —C(CH)CHor —C(CH);'}{'sup': '3', 'Ris H;'}{'sup': 5', '6, 'claim-text': [{'sup': '6', 'sub': 1', '4', '1', '4, 'X═O and Ris phenyl or phenyl substituted with up to five substituents independently selected from alkyl, preferably C-Calkyl, such as methyl, isopropyl or t-butyl; alkoxy, preferably C-Calkoxy; phenoxy, phenyl, optionally substituted, respectively; ...

HYDROPROCESSING CATALYST AND METHOD FOR PREPARING SAME

Embodiments of the invention relate to a method for preparing a hydroprocessing catalyst including supporting a carrier with one or more hydrogenation metal components selected from the group consisting of VIB, VIIB, and VIII group metals of the periodic table; drying and calcining the supported carrier having the hydrogenation metal components; supporting the supported carrier having the hydrogenation metal components with an organic compound, and drying and calcining the supported carrier having the hydrogenation metal components and the organic compound. The hydrogenation metal components and the organic compound are supported in the carrier. The organic compound is selected from the group consisting of methyl acetoacetate, ethyl acetoacetate and a mixture thereof. The hydrogenation metal components supported in the carrier is sulfide. An amount of the organic compound is 15 wt % to 90 wt % based on the total amount of the hydroprocessing catalyst. 1. A method for preparing a hydroprocessing catalyst , the method comprising:supporting a carrier with one or more hydrogenation metal components selected from the group consisting of VIB, VIIB, and VIII group metals of the periodic table;drying and calcining the supported carrier having the one or more hydrogenation metal components;supporting the supported carrier having the one or more hydrogenation metal components with an organic compound, anddrying and calcining the supported carrier having the one or more hydrogenation metal components and the organic compound,wherein the one or more hydrogenation metal components and the organic compound are supported in the carrier,wherein the organic compound is selected from the group consisting of methyl acetoacetate, ethyl acetoacetate and a mixture thereof,wherein the one or more hydrogenation metal components supported in the carrier is sulfided,wherein an amount of the organic compound is 15 wt % to 90 wt % based on the total amount of the hydroprocessing catalyst.2. ...

Supported oxide nh3-scr catalysts with dual site surface species and synthesis processes

A process for preparing a catalyst material, includes the steps of: (a) providing a support material having surface hydroxyl (OH) groups, wherein the support material is ceria (CeO 2 ), zirconia (ZrO 2 ) or a combination of thereof; (b) reacting the support material having surface hydroxyl (OH) groups of step (a) with a precursor containing two transition metal atoms, each chosen independently from the group consisting of: W, Mo, Cr, Ta, Nb, V, Mn; (c) calcining the product obtained in step (b) in order to provide a catalyst material showing dual site surface species containing pairs of transition metal atoms derived from the precursor that are present in oxide form on the support material. Additionally, a catalyst material is obtained by the process set out above, and the catalyst material is used as an ammonia selective catalytic reduction (NH 3 -SCR) catalyst for nitrogen oxides (NOx) reduction.

HIGHLY DISPERSED METAL SUPPORTED OXIDE AS NH3-SCR CATALYST AND SYNTHESIS PROCESSES

A process for preparing a catalyst material, includes: (a) providing a support material having surface hydroxyl (OH) groups, the support material is ceria (CeO), zirconia (ZrO) or a combination, and the support material contains between 0.3 and 2.0 mmol OH groups/g of the support material; (b) reacting the support material with at least one of: (b1) a compound containing at least one alkoxy or phenoxy group bound though its oxygen atom to a metal element from Group 5 (V, Nb, Ta) or Group 6 (Cr, Mo, W); (b2) a compound containing at least one hydrocarbon group bound though a carbon atom to a metal element from Group 5 or 6; (b3) a compound containing at least one hydrocarbon group bound though a carbon atom to a metal element which is copper (Cu); and (c) calcining the product obtained in step (b). 1. A process for preparing a catalyst material , comprising the steps of:{'sub': 2', '2, '(a) providing a support material having surface hydroxyl (OH) groups, wherein the support material is ceria (CeO), zirconia (ZrO) or a combination thereof, and wherein the support material contains at least 0.3 mmol and at most 2.0 mmol OH groups/g of the support material;'} (b1) a compound containing at least one alkoxy or phenoxy group bound though its oxygen atom to a metal element from Group 5 (V, Nb, Ta) or Group 6 (Cr, Mo, W);', '(b2) a compound containing at least one hydrocarbon group bound though a carbon atom to a metal element from Group 5 (V, Nb, Ta) or Group 6 (Cr, Mo, W);', '(b3) a compound containing at least one hydrocarbon group bound though a carbon atom to a metal element which is copper (Cu); and, '(b) reacting the support material having surface hydroxyl (OH) groups of step (a) with at least one of the following(c) calcining the product obtained in step (b) in order to provide a catalyst material in which a metal element from Group 5 or Group 6, or Cu, is present as an oxide on the support material.2. The process according to claim 1 , wherein the support material ...

Selective hydrodeoxygenation of aromatic compounds

Disclosed are methods of selective hydrodeoxygenation of aromatic compounds by using catalyst systems comprising N-heterocyclic carbene (NHC) and 4-pyridinol-derived pincer ligands and metal complexes containing these ligands.

IONIC METAL ALKYLIDENE COMPOUNDS AND USE THEREOF IN OLEFINIC METATHESIS REACTIONS

A compound of formula (I) wherein: M is selected from Mo or W; X is selected from O or NR; Rand Rare independently selected from H, Calkyl, and aryl; Calkyl and aryl optionally being substituted with one or more of Calkyl, Calkoxy, and O—CH; Ris selected from a nitrogen-containing aromatic heterocycle being bound to M via said nitrogen; and from halogen; Ris an aryl oxy group being bound to M via said oxygen of said aryl oxy group; wherein said aryl group Ar of said aryl oxy group is bound to a group Cat such to form a cationic ligand Cat-Z—ArO—, wherein Z is either a covalent bond or a linker; Ris alkyl or aryl, optionally substituted. 2. The compound of claim 1 , wherein Rand Rare independently selected from H claim 1 , C(CH) claim 1 , C(CH)CH claim 1 , and phenyl substituted in o-position with Calkoxy.3. The compound of claim 1 , wherein Ris selected from pyrrol-1-yl claim 1 , pyrazol-1-yl claim 1 , imidazol-1-yl claim 1 , 1H-1 claim 1 ,2 claim 1 ,3-triazol-1-yl claim 1 , 2H-1 claim 1 ,2 claim 1 ,3-triazol-2-yl claim 1 , 1H-1 claim 1 ,2 claim 1 ,4-triazol-1-yl claim 1 , 4H-1 claim 1 ,2 claim 1 ,4-triazo-4-yl claim 1 , indol-1-yl claim 1 , indazol-1-yl claim 1 , and azaindol-1-yl claim 1 , optionally substituted with one or more substituents selected independently from Calkyl claim 1 , Calkoxy claim 1 , phenyl claim 1 , halogen claim 1 , or cyano claim 1 , preferably pyrrol-1-yl claim 1 , 2 claim 1 ,5-dimethylpyrrol-1-yl claim 1 , and 2 claim 1 ,5-diphenylpyrrol-1-yl or indol-1-yl or a substituted indol-1-yl.4. The compound of claim 1 , wherein Ris selected from halogen.5. The compound of claim 1 , wherein said Ar in said Cat-Z—ArO— is phenyl substituted in 2 claim 1 ,6-position with phenyl claim 1 , optionally substituted claim 1 , or with isopropyl or t-butyl claim 1 , respectively; or{'sup': +', '+, 'said Ar in Cat-Z—ArO— is phenyl substituted in 4-position with Cat-Z—; or'}{'sup': '+', 'said Ar in Cat-Z—ArO— is phenyl substituted in 2,6 position with phenyl, ...

METATHESIS CATALYSTS AND METHODS THEREOF

The present application provides, among other things, compounds and methods for metathesis reactions. In some embodiments, the present disclosure provides methods for preparing alkenyl halide with regioselectivity and/or stereoselectivity. In some embodiments, the present disclosure provides methods for preparing alkenyl halide with regioselectivity and Z-selectivity. In some embodiments, the present disclosure provides methods for preparing alkenyl halide with regioselectivity and E-selectivity. In some embodiments, provided technologies are particularly useful for preparing alkenyl fluorides. In some embodiments, a provided compound useful for metathesis reactions has the structure of formula II-a. In some embodiments, a provided compound useful for metathesis reactions has the structure of formula II-b. 2. A method , comprising:reacting a first species comprising an olefin with a second species comprising an alkyne in the presence of a catalyst or metal complex to provide at least one product comprising an olefin, wherein:each carbon atom of the olefin in the first species is substituted with at least one halogen; andthe olefin in the at least one product comprises a carbon atom from the first species and a carbon atom from the second species; and{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'wherein the catalyst or metal complex is of formula II-a or II-b as described in .'}3. The method of claim 1 , wherein the olefin in the at least one product is formed via a metathesis reaction between the olefin in the first species and the olefin in the second species; andthe halogen substituent of the first carbon atom of the double bond in the first species and the halogen substituent of the second carbon atom of the double bond in the first species is cis, and the olefin in the at least one product comprises a carbon atom from the first species and a carbon atom from the second species is produced with Z-selectivity.5. The method of claim 1 , wherein the olefin in ...

Molybdenum and tungsten metal complexes and use thereof as precatalysts for olefin metathesis

The invention relates to metal complexes of general formula (I) and to a method for the production thereof, in which M, R 1 , R 2 , R 3 , X and Y in addition to R a , R b , R c , R d , R e , R f , R g , R h can have the meanings defined in the claims. Said metal complexes form air-stable compounds and are suitable as pre-catalysts in the olefin metathesis.

METAL COMPLEX AND METHOD FOR PRODUCING HYDROGEN PEROXIDE

An object of the present invention is to provide a novel method for producing hydrogen peroxide by direct synthesis that is capable of taking the place of the conventional anthraquinone process, and to provide a catalyst used in the production method. 2: The metal complex according to claim 1 , wherein the number of carbon atoms of the alkyl group is 1 to 4 claim 1 , the number of carbon atoms of the aralkyl group is 7 to 10 claim 1 , the number of carbon atoms of the aryl group is 6 to 9 claim 1 , the number of carbon atoms of the alkoxy group is 1 to 4 claim 1 , the number of carbon atoms of the aralkyloxy group is 7 to 10 claim 1 , and the number of carbon atoms of the aryloxy group is 6 to 9.3: The metal complex according to claim 1 , represented by the formula (1) claim 1 , wherein R claim 1 , R claim 1 , R claim 1 , R claim 1 , R claim 1 , Rand Rrepresent hydrogen atoms claim 1 , Rand Rrepresent methyl groups claim 1 , one of X claim 1 , Y and Z represents OH claim 1 , the remaining two represent HO claim 1 , and An1 represents a nitrate ion.4: The metal complex according to claim 1 , represented by the formula (2) claim 1 , wherein R claim 1 , R claim 1 , R claim 1 , R claim 1 , R claim 1 , Rand Rrepresent hydrogen atoms claim 1 , Rand Rrepresent methyl groups claim 1 , Y represents HO and An2 represents a nitrate ion.5: The metal complex according to claim 1 , represented by the formula (3) claim 1 , wherein R claim 1 , R claim 1 , R claim 1 , R claim 1 , R claim 1 , Rand Rrepresent hydrogen atoms claim 1 , Rand Rrepresent methyl groups claim 1 , Y represents HO and An3 represents a nitrate ion.6: The metal complex according to claim 1 , represented by the formula (4) claim 1 , wherein R claim 1 , R claim 1 , R claim 1 , R claim 1 , R claim 1 , Rand Rrepresent hydrogen atoms claim 1 , Rand Rrepresent methyl groups claim 1 , X and Y represent HO and An4 represents a nitrate ion.8: The metal complex according to claim 1 , represented by the formula (1).9: The ...

METATHESIS CATALYSTS AND METHODS THEREOF

The present invention provides, among other things, novel compounds and methods for metathesis reactions. In some embodiments, a provided compound has the structure of formula I or II. In some embodiments, the present invention provides compounds and methods for Z-selective olefin metathesis. 2. The compound of claim 1 , wherein one of Rand Ris hydrogen and the other is optionally substituted Caliphatic.5. The compound of claim 1 , wherein Ris optionally substituted Caliphatic.6. The compound of claim 1 , wherein Ris optionally substituted phenyl.8. The compound of claim 1 , wherein Ris optionally substituted pyrrolyl.913-. (canceled)17. The method of claim 15 , wherein each of the unsaturated carbon-carbon bonds is a carbon-carbon double bond.18. The method of claim 15 , wherein the product comprises a carbon-carbon double bond claim 15 , and said carbon-carbon double bond is formed with Z-selectivity.19. The method of claim 18 , wherein the Z-selectivity is greater than about 90%.20. (canceled) The present application claims priority to U.S. Provisional Application Ser. No. 61/813,096, filed Apr. 17, 2013, the entirety of which is incorporated herein by reference.This invention was made with government support under Grant Nos. CHE1111133 and CHE1205189 awarded by the National Science Foundation. The government has certain rights in the invention.The present invention generally relates to metathesis reactions.Catalytic olefin metathesis has transformed chemical synthesis and offers exceptionally efficient pathways for synthesis of alkenes. In the last several years sterically demanding phenoxide ligands have been employed to make Mo- and W-based MAP (MonoAlkoxide Pyrrolide) catalysts for olefin metathesis reactions. One of the first was OBrBitet, an enantiomerically pure monophenoxide ligand that yielded diastereomeric mixtures of MAP catalysts (R′═H or Me) for enantioselective ring-opening/cross-metathesis reactions (Ibrahem, I; Yu, M.; Schrock, R. R.; Hoveyda, A. ...

Catalyst for contaminant reduction and methods of use thereof

Described herein are heterogeneous catalysts for removing impurities, such as halogen oxyanions (e.g., ClO4− and ClO3−), from a fluid, the catalyst can comprise: an oxygen atom transfer (OAT) transition metal, a Group VIII metal, and a support, where the transition metal, and the Group VIII metal can be in physical communication with the support either directly or indirectly through each other, whereby the catalyst can chemically remove impurities from the fluid. Certain embodiments provide catalysts that further comprise nitrogen donor ligand(s). Accordingly, such catalysts that comprise the OAT transition metal in the form of a complex with one or more nitrogen donor ligands have enhanced efficiency in reducing halogen oxyanion (e.g., ClO4−) to Cl−. Also described are methods or kits for making the catalysts and methods or reactor for the treatment of a fluid utilizing the catalyst.

IMMOBILIZED METATHESIS TUNGSTEN OXO ALKYLIDENE CATALYSTS AND USE THEREOF IN OLEFIN METATHESIS

Method of making an immobilized tungsten catalyst comprising or consisting of (≡SiO)W(═O)(═CRR)(Ror R)(L), comprising at least the following step (i): (i) reacting silica (Si02) with a tungsten oxo alkylidene complex comprising or consisting of (R)(R)W(═O)(═CRR)(L), preferably wherein ═CRRis selected from ═CHC(CH)or ═CH(C(CH))CHand Rand Rare independently selected from pyrrol-1-yl, 2,5-dimethylpyrrol-1-yl, or 2,5-diphenylpyrrol-1-yl, or —OR, wherein R is a six membered or 10 membered aryl ring, optionally substituted. 1. A method of making an immobilized tungsten catalyst comprising{'br': None, 'sub': x', '2-x', 'z, 'sup': 1', '2', '3', '4, '(≡SiO)W(═O)(═(CRR)(Ror R)(L),'}{'sup': 1', '2, 'sub': 2', '2', '2', '2', '2', '2, 'wherein each of Rand Ris independently R, —OR, —SR, —N(R), —OC(O)R, —SOR, —SOR, —SON(R), —C(O)N(R), —NRC(O)R, or —NRSOR;'}{'sub': 1-20', '1-20, 'each R is independently hydrogen or an optionally substituted group selected from Caliphatic, Cheteroaliphatic having 1-3 heteroatoms independently selected from nitrogen, oxygen, or sulfur, phenyl, ferrocene, a 3-7 membered saturated or partially unsaturated carbocyclic ring, an 8-10 membered bicyclic saturated, partially unsaturated or aryl ring, a 5-6 membered monocyclic heteroaryl ring having 1-4 heteroatoms independently selected from nitrogen, oxygen, or sulfur, a 4-7 membered saturated or partially unsaturated heterocyclic ring having 1-3 heteroatoms independently selected from nitrogen, oxygen, or sulfur, a 7-10 membered bicyclic saturated or partially unsaturated heterocyclic ring having 1-5 heteroatoms independently selected from nitrogen, oxygen, or sulfur, or an 8-10 membered bicyclic heteroaryl ring having 1-5 heteroatoms independently selected from nitrogen, oxygen, or sulfur, ortwo R groups on the same nitrogen atom are taken together with the nitrogen to form an optionally substituted 3-12 membered saturated, partially unsaturated, or aryl ring having 0-5 additional heteroatoms not ...

Z-SELECTIVE RING-CLOSING METATHESIS REACTIONS

The present invention relates generally to olefin metathesis. In some embodiments, the present invention provides methods for Z-selective ring-closing metathesis. 13-. (canceled)68-. (canceled)10. The metal complex of claim 9 , wherein:{'sup': '8', 'Ris optionally substituted phenyl, wherein one or more substituents are —F; and'}{'sup': '7', 'each Ris independently optionally substituted —Ar′, wherein one or more substituents are —F.'}11. (canceled)13. The metal complex of claim 9 , wherein Ris phenyl optionally substituted with one to five R claim 9 , wherein at least one Ris —F.14. The metal complex of claim 9 , wherein Ris phenyl substituted with one to five R claim 9 , wherein at least one Ris —CF.16. The metal complex of claim 9 , wherein each Ris independently Ar′ claim 9 , wherein at least one Ris —F.17. The metal complex of claim 9 , wherein at least one —ORis an asymmetric ligand.21. The metal complex of claim 9 , wherein:M is molybdenum;{'sup': '8', 'Ris substituted phenyl, wherein one or more substituents are —F; and'}{'sup': '7', 'each Ris independently optionally substituted —Ar′, wherein one or more substituents are —F.'}23. A composition comprising a metal complex of claim 9 , wherein 35 mol % or more of the M-containing compounds in the composition are a metal complex of .24. The composition of claim 9 , wherein the metal complex of is a complex of .25. The composition of claim 9 , wherein the metal complex of is a complex of .26. The composition of claim 9 , wherein the metal complex of is a complex of .27. The composition of claim 9 , wherein the metal complex of is a complex of . This application is a Division of U.S. patent application Ser. No. 13/487,067, filed Jun. 1, 2012, which claims priority to U.S. Provisional Application Ser. No. 61/492,996, filed Jun. 3, 2011, and 61/598,307, filed Feb. 13, 2012, the entirety of each of which is incorporated herein by reference.This invention was made with the support under the following government ...

Catalyst for Ring Expansion Metathesis Polymerization of Cyclic Monomers

A tetraanionic OCO pincer ligand metal-oxo-alkylidene complex is prepared from a trianionic pincer ligand supported metal-alkylidyne. The metal can be tungsten or other group 5-7 transition metal. The tetraanionic pincer ligand metal-oxo-alkylidene complex, a trianionic OCO pincer ligand metal complex, or a trianionic ONO pincer ligand metal complex can be used to polymerize cycloalkenes. The poly(cycloalkene)s are predominantly cis-alkene macrocyclics. 3. A method to prepare a tetraanionic pincer ligand metal-oxo-alkylidene complex according to claim 1 , comprising:providing a trianionic pincer ligand supported metal-alkylidyne complex;combining the trianionic pincer ligand supported metal-alkylidyne complex with carbon dioxide, carbon disulfide, or a mixture thereof; andoptionally, warming the mixture of trianionic pincer ligand metal-alkylidyne complex with carbon dioxide, wherein a tetraanionic pincer ligand metal-oxo-alkylidene complex is formed.4. A method of polymerizing a cyclic alkene claim 1 , comprisingproviding a catalytic initiator selected from a tetraanionic OCO pincer ligand metal-oxo-alkylidene complex, a trianionic OCO pincer ligand metal complex, or a trianionic ONO pincer ligand metal complex;providing a plurality of cyclic alkene monomers; andcombining the catalytic initiator with the cyclic alkene monomers,polymerizing the plurality of cyclic alkene monomers into a macrocyclic poly(alkene).8. The method of claim 4 , wherein the cyclic monomer is unsubstituted or substituted cyclopropene claim 4 , cyclobutene claim 4 , cyclopentene claim 4 , cycloheptene claim 4 , and cyclooctene claim 4 , norbornene claim 4 , dicyclopentadiene claim 4 , norbornene anhydride claim 4 , diester from norbornene anhydride claim 4 , imide from norbornene anhydride claim 4 , oxanorbornene claim 4 , oxanorbornene anhydride claim 4 , ester of oxanorbornene anhydride claim 4 , and imide of oxanorbornene anhydride claim 4 , or any combination thereof claim 4 , wherein the ...

Highly active multidentate catalysts for efficient alkyne metathesis

The invention relates to highly active and selective catalysts for alkyne metathesis. In one aspect, the invention includes a multidentate organic ligand wherein one substrate-binding site of the metal center is blocked. In another aspect, the invention includes N-quaternized or silane-based multidentate organic ligands, capable of binding to metals. In yet another aspect, the invention includes N-quaternized or silane-based multidentate catalysts. The catalysts of the invention show high robustness, strong resistance to small alkyne polymerization and significantly enhanced catalytic activity compared to their corresponding non-quaternized or non-silane-based multidentate catalyst analogues.

HYDROPROCESSING CATALYSTS AND THEIR PRODUCTION

The precursor of a hydroprocessing catalyst is made by impregnating a metal oxide component comprising at least one metal from Group 6 of the Periodic Table and at least one metal from Groups 8-10 of the Periodic Table with an amide formed from a first organic compound containing at least one amine group, and a second organic compound containing at least one carboxylic acid group. Following impregnation heat treatment follows to form in situ generated unsaturation additional to that in the two organic compounds. The catalyst precursor is sulfided to form an active, sulfide hydroprocessing catalyst. 1. (canceled)2. A method for hydroprocessing a biocomponent feedstock , comprising:exposing a biocomponent feedstock comprising a bio-derived fraction and a mineral oil fraction to a bulk mixed metal catalyst, in the presence of hydrogen under effective deoxygenation conditions, the bulk mixed metal catalyst comprising at least one Group VI metal selected from Mo and W and at least one Group VIII metal selected from Co and Ni; and forming a deoxygenated effluent.3. The method of claim 2 , wherein the bio-derived fraction makes up about 20 wt % of the biocomponent feedstock.4. The method of claim 2 , wherein the bio-derived fraction includes a lipids fraction claim 2 , wherein about 2 wt % to about 40 wt % of lipids in the lipids fraction claim 2 , based on the weight of the bio-derived fraction claim 2 , is sourced from algal sources.5. The method of claim 2 , wherein the deoxygenated effluent is substantially oxygen free.6. The method of claim 2 , wherein the dexoygenation conditions comprise a hydrogen partial pressure of from about 5 barg (0.5 MPag) to about 300 barg (30 MPag) claim 2 , a reaction temperature of from about 392° F. to about 842° F. (200° C. to 450° C.) claim 2 , a liquid hourly space velocity of from about 0.05 hrto about 10 hr claim 2 , and a hydrogen treat gas rate from about 200 scf/B (34 Nm/m) to about 10 claim 2 ,000 scf/B (1685 Nm/m).7. The method ...

Production of fatty olefin derivatives via olefin metathesis

In one aspect, the invention provides a method for synthesizing a fatty olefin derivative. The method includes: a) contacting an olefin according to Formula I with a metathesis reaction partner according to Formula IIb in the presence of a metathesis catalyst under conditions sufficient to form a metathesis product according to Formula IIIb: and b) converting the metathesis product to the fatty olefin derivative. Each R 1 is independently selected from H, C 1-18 alkyl, and C 2-18 alkenyl; R 2b is C 1-8 alkyl; subscript y is an integer ranging from 0 to 17; and subscript z is an integer ranging from 0 to 17. In certain embodiments, the metathesis catalyst is a tungsten catalyst or a molybdenum catalyst. In various embodiments, the fatty olefin derivative is a pheromone. Pheromone compositions and methods of using them are also described.

Catalyst for ring expansion metathesis polymerization of cyclic monomers

A tetraanionic OCO pincer ligand metal-oxo-alkylidene complex is prepared from a trianionic pincer ligand supported metal-alkylidyne. The metal can be tungsten or other group 5-7 transition metal. The tetraanionic pincer ligand metal-oxo-alkylidene complex, a trianionic OCO pincer ligand metal complex, or a trianionic ONO pincer ligand metal complex can be used to polymerize cycloalkenes. The poly(cycloalkene)s are predominantly cis-alkene macrocyclics.

TRANSITION METAL TUNGSTEN OXY-HYDROXIDE

A hydroprocessing catalyst or catalyst precursor has been developed. The catalyst is a unique transition metal tungsten oxy-hydroxide material. The hydroprocessing using the transition metal tungsten oxy-hydroxide material or the decomposition product thereof may include hydrodenitrification, hydrodesulfurization, hydrodemetallation, hydrodesilication, hydrodearomatization, hydroisomerization, hydrotreating, hydrofining, and hydrocracking. 2. The process of wherein the conversion process is hydroprocessing.3. The process of wherein the conversion process is selected from the group consisting of hydrodenitrification claim 1 , hydrodesulfurization claim 1 , hydrodemetallation claim 1 , hydrodesilication claim 1 , hydrodearomatization claim 1 , hydroisomerization claim 1 , hydrotreating claim 1 , hydrofining claim 1 , and hydrocracking.4. The process of wherein the transition metal tungsten oxy-hydroxide material claim 1 , or the decomposition product claim 1 , or both claim 1 , are present in a mixture with at least one binder and wherein the mixture comprises up to 25 wt % binder.5. The process of wherein the binder is selected from the group consisting of silicas claim 4 , aluminas claim 4 , and silica-aluminas6. The process of wherein the feed comprises sulfur and the decomposition by sulfidation comprises contacting the metal tungsten oxy-hydroxide material with the sulfur containing feed.7. The process of wherein the decomposition by sulfidation comprises contacting the metal tungsten oxy-hydroxide material with a gaseous mixture of HS/H.8. The process of wherein the sulfidation is conducted at a temperature ranging from about 50° C. to about 600° C.9. The process of wherein the sulfidation is conducted at a temperature ranging from about 150° C. to about 500° C.10. The process of wherein the sulfidation is conducted at a temperature ranging from about 250° C. to about 450° C.12. The method of wherein the reacting is conducted at a temperature ranging from about ...

CATALYSTS FOR METATHESIS REACTIONS INCLUDING ENANTIOSELECTIVE OLEFIN METATHESIS, AND RELATED METHODS

The present invention provides compositions comprising metal complexes, and related methods. In some embodiments, metal complexes of the invention may be useful as catalysts for chemical reactions, including metathesis reactions, wherein the catalysts exhibit enhanced activity and stereoselectivity. In some embodiments, the invention may advantageously provide metal complexes comprising a stereogenic metal atom. Such metal complexes may be useful in enantioselective catalysis. 124-. (canceled)2631-. (canceled)32. The method of claim 25 , wherein the catalyzing occurs with an enantiomeric excess greater than 50%.3337-. (canceled)38. The method of claim 25 , wherein the catalyzing or reacting occurs with a yield of at least 50%.3947-. (canceled)48. The method of claim 25 , wherein the catalyst is present in the cross-metathesis reaction in an amount of 10 mol % or less.4980-. (canceled)81. The method of claim 25 , wherein the cross-metathesis reaction is conducted under an atmosphere of ethylene.8286-. (canceled)90. The method of claim 25 , wherein M is Mo.92. The method of claim 91 , wherein Rand Rare the same or different and are selected from the group consisting of F claim 91 , Cl claim 91 , Br claim 91 , or I.97. The method of claim 96 , wherein Rand Rare the same or different and are selected from the group consisting of F claim 96 , Cl claim 96 , Br claim 96 , or I.100. The method of claim 96 , wherein Rand Rare the same or different and are selected from the group consisting of F claim 96 , Cl claim 96 , Br claim 96 , or I.101. The method of claim 96 , wherein M is Mo. This application is a divisional of U.S. patent application Ser. No. 12/864,261, filed Oct. 12, 2010, and titled CATALYSTS FOR METATHESIS REACTIONS INCLUDING ENANTIOSELECTIVE OLEFIN METATHESIS, AND RELATED METHODS, now U.S. Pat. No. 9,687,834, which is a National Stage Entry of International Application No. PCT/US2009/000465, filed Jan. 23, 2009, and titled CATALYSTS FOR METATHESIS REACTIONS ...

ACTIVATION OF SUPPORTED OLEFIN METATHESIS CATALYSTS BY ORGANIC REDUCTANTS

An organic reductant, in particular an organo silicon reductant suitable for activating supported catalysts of the type MOE, wherein E is S and/or Se, in particular MO, wherein M is W, Mo or Re, is described as well as its use in metathesis reactions. The reduced catalysts are able to metathesize olefins at low temperatures and are therefore also suitable for metathesis of functionalized olefins. 1. A method for producing an activated supported catalyst , said method comprising contacting a supported catalyst of the type MOEwith E being S and/or Se , in particular MO , with at least one organic reductant , said reductant comprising at least one double bond or at least one silyl group of the type SiXY in such proximity to one or more further double bond(s) that upon oxidation an aromatic structure is formed , wherein in the silyl group of the type SiXY{'sub': '2', 'claim-text': [ unsubstituted or substituted, linear or branched or cyclic C1 to C18 alkyl,', 'unsubstituted or substituted linear or branched or cyclic C1 to C18 alkenyl,', 'unsubstituted or substituted linear or branched or cyclic C1 to C18 alkynyl, or', 'an unsubstituted or substituted aromatic group, 'each R′ is independently selected from'}, {'sub': '2', 'each R is independently selected from H, R′, silyl of type —SiXY'}], 'each X is independently selected from H, R′, halogen, OR, NR, wherein'}the Y of each silyl group can be the same or different and is selected from the group as defined for X or two Y together are —O— or a single bondin an oxygen-free and dry environment.3. The method of claim 2 , wherein at least one of the variables in formula (I) and much preferred all variables are selected from the following groups:{'sup': 1', '5, 'Eis selected from C—Rand N'}n is 1{'sup': 1', '4', '5, 'sub': '3', 'claim-text': [ unsubstituted or substituted, linear or branched or cyclic C1 to C6 alkyl,', 'unsubstituted or substituted linear or branched or cyclic C1 to C6 alkenyl,', 'unsubstituted or substituted ...

PROCESS FOR DEHYDROGENATION OF ALKYL-CONTAINING COMPOUNDS USING MOLYBDENUM AND TUNGSTEN NITROSYL COMPLEXES

A process for the dehydrogenation of alkyl-containing compounds comprises reacting an alkyl-containing compound and a Group VI nitrosyl complex characterized as a transition metal complex having the composition Cp′M(NO)(R1)(R2), wherein Cp′ is selected from certain substituted and unsubstituted η-cyclopentadienyl groups; M is W or Mo; and R1 and R2 are independently selected from CHC(CH); CHSi(CH); CH(CH); CH; hydrogen; and η-allyl; provided that if R1 is hydrogen, R2 is η-allyl; under conditions such that the alkyl-containing compound is converted to an olefin, and in particular embodiments, a terminal olefin. The dehydrogenation can be carried out using a neat and/or undried alkyl-containing compound and/or may be conducted under air, and does not require a sacrificial olefin to drive the reaction, thereby increasing convenience and decreasing cost in comparison with some other dehydrogenation processes. 2. The process of wherein η-allyl is an allyl ligand selected from:{'sup': '3', 'sub': n', '(2n-1), '(a) η—CH;'}{'sup': '3', 'sub': 2', '3', '2, '(b) η—CHCH(CH);'}{'sup': '3', 'sub': 2', '3', '3, '(c) η—CHCHCHSi(CH);'}{'sup': '3', 'sub': 2', '6', '5, '(d) η—CHCHCH(CH); and'}{'sup': '3', 'sub': 6', '5', '6', '5, '(e) η—CH(CH)CHCH(CH);'}wherein n is an integer from 3 to 10.3. The process of wherein the conditions include a temperature ranging from 25° C. to 200° C.; a pressure ranging from 101 kilopascals to 10 claim 1 ,500 kilopascals; and a time ranging from 0.5 hour to 100 hours.4. The process of wherein the pressure ranges from 101 kilopascals to 5 claim 3 ,000 kilopascals; and wherein when M is tungsten claim 3 , the temperature ranges from 60° C. to 200° C. claim 3 , and wherein when M is molybdenum claim 3 , the temperature ranges from 25° C. to 150° C.5. The process of wherein the alkyl-containing compound has a carbon number ranging from 2 to 20 carbons.6. The process of wherein the alkyl-containing compound contains no more than 0.01 weight percent of ...

METATHESIS CATALYSTS AND REACTIONS USING THE CATALYSTS

The invention relates to a method of forming an olefin from a first olefin and a second olefin in a metathesis reaction, comprising step (i): 131-. (canceled)33. The method of claim 32 , wherein the organometallic compound of aluminum is trioctyl aluminum.34. The method of claim 32 , wherein the organometallic compound of aluminum is a trialkyl aluminum compound claim 32 , and wherein the feedstock is subjected to the trialkyl aluminum compound for a period of from 10 to 80 h.35. The method of claim 32 , wherein the feedstock is subjected to the organometallic compound of aluminum claim 32 , and wherein the organometallic compound of aluminum is added to the first and the second olefin at a rate of from 0.01 to 10 ppmwt organometallic compound of aluminum per hour.36. The method of claim 32 , wherein in the compound of general Formula (A):M=Mo or W;{'sup': '1', 'Ris aryl or adamant-1-yl, each of which is optionally substituted;'}{'sup': '2', 'sub': 3', '2', '6', '5', '3', '3, 'Ris —C(CH)CHor —C(CH);'}{'sup': '3', 'Ris H;'}{'sup': '5', 'Ris alkoxy, heteroaryl, silyloxy, or aryloxy, each of which is optionally substituted; and'}{'sup': 4', '6, 'Ris a residue R—X—, wherein'}{'sup': '6', 'X═O and Ris phenyl substituted with up to five substituents independently selected from alkyl, phenoxy, phenyl, halogen, each of which is optionally substituted; or'}{'sup': '6', 'X═O and Ris 8-(naphthalene-1-yl)-naphthalene-1-yl, optionally substituted; or'}{'sup': '6', 'X═O and Ris 8-phenylnaphthalene-1-yl, optionally substituted; or'}{'sup': '6', 'X═O and Ris quinoline-8-yl, optionally substituted; or'}{'sup': '6', 'X═S and Ris phenyl substituted with up to five substituents independently selected from alkyl, phenoxy, phenyl, halogen, each of which is optionally substituted; or'}{'sup': '6', 'X═O and Ris triphenylsilyl, optionally substituted; or triisopropylsilyl; or'}{'sup': '6', 'X═O and Ris triphenylmethyl, optionally substituted; or'}{'sup': '6', 'X═O and Ris 9-phenyl-fluorene- ...

Transition metal olefin polymerization processes

This invention relates to processes using non-Group 4 transition metal compositions useful as olefin polymerization catalysts, wherein the transition metal is in a high oxidation state. The invention further relates to design of new ligand systems and methods of preparing and using the same. Compositions useful as catalyst precursors are neutral transition metal complexes comprising the unique ligand systems of the invention. The inventive compositions may be activated to a catalytic state by ion-exchange reagents or by Lewis acids.

Transition metal olefin polymerization catalysts

This invention relates to non-Group 4 transition metal compositions useful as olefin polymerization catalysts, wherein the transition metal is in a high oxidation state. The invention further relates to design of new ligand systems and methods of preparing and using the same. Compositions useful as catalyst precursors are neutral transition metal complexes comprising the unique ligand systems of the invention. The inventive compositions may be activated to a catalytic state by ion-exchange reagents or by Lewis acids.

OLEFIN POLYMERIZATION CATALYSTS BASED ON TRANSITIONAL METALS

Polymerization of α-olefins with transition metal catalysts based on bidentate ligands containing pyridine or quinoline moiety

Disclosed is a novel bidentate pyridine transition metal catalyst having the general formula ##STR1## where Y is O, S, NR, ##STR2## each R is independently selected from hydrogen or C 1 to C 6 alkyl, each R' is independently selected from C 1 to C 6 alkyl, C 1 to C 6 alkoxy, C 6 to C 16 aryl, halogen, or CF 3 , M is titanium, zirconium, or hafnium, each X is independently selected from halogen, C 1 to C 6 alkyl, C 1 to C 6 alkoxy, or ##STR3## L is X, cyclopentadienyl, C 1 to C 6 alkyl substituted cyclopentadienyl, indenyl, fluorenyl, or ##STR4## and "n" is 1 to 4. Also disclosed is a method of making a poly-α-olefin comprising polymerizing an α-olefin monomer using that catalyst or a catalyst that has the general formula ##STR5## where Y, M, L, X, and R' were previously defined.

Transition metal olefin polymerization catalysts

This invention relates to non-Group 4 transition metal compositions useful as olefin polymerization catalysts, wherein the transition metal is in a high oxidation state. The invention further relates to design of new ligand systems and methods of preparing and using the same. Compositions useful as catalyst precursors are neutral transition metal complexes comprising the unique ligand systems of the invention. The inventive compositions may be activated to a catalytic state by ion-exchange reagents or by Lewis acids.

Monocyclopentadienyl complexes

Monocyclopentadienyl complexes in which the cyclopentadienyl system bears at least one unsubstituted, substituted or fused, heteroaromatic ring system bound via a specific bridge, a catalyst system comprising at least one of the monocyclopentadienyl complexes, the use of the catalyst system for the polymerization or copolymerization of olefins and a process for preparing polyolefins by polymerization or copolymerization of olefins in the presence of the catalyst system and polymers obtainable in this way.

Oligomerization of olefins

Transition metal compound comprising at least one ligand system L with a nitrogen-phosphorus-nitrogen-structural element wherein phosphorus is pentavalent, catalyst system for the oligomerization of olefins comprising such a transition metal complex and process for oligomerization of olefinic monomers carried out in the presence of the catalyst system.

Monocyclopentadienyl complexes

Monocyclopentadienyl complexes in which the cyclopentadienyl system bears at least one unsubstituted, substituted or fused, heteroaromatic ring system bound via a specific bridge, a catalyst system comprising at least one of the monocyclopentadienyl complexes, the use of the catalyst system for the polymerization or copolymerization of olefins and a process for preparing polyolefins by polymerization or copolymerization of olefins in the presence of the catalyst system and polymers obtainable in this way.

Monocyclopentadienyl complexes

Monocyclopentadienyl complexes in which the cyclopentadienyl system bears at least one unsubstituted, substituted or fused, heteroaromatic ring system bound via a specific bridge, a catalyst system comprising at least one of the monocyclopentadienyl complexes, the use of the catalyst system for the polymerization or copolymerization of olefins and a process for preparing polyolefins by polymerization or copolymerization of olefins in the presence of the catalyst system and polymers obtainable in this way.

Monocyclopentadienyl complexes

Monocyclopentadienyl complexes in which the cyclopentadienyl system bears at least one unsubstituted, substituted or fused, 5-membered heteroaromatic ring system bound via a specific bridge, a catalyst system comprising at least one of the mono-cyclopentadienyl complexes, the use of the catalyst system for the polymerization or copolymerization of olefins and a process for preparing polyolefins by polymerization or copolymerization of olefins in the presence of the catalyst system and polymers obtainable in this way.

Monocyclopentadienyl complexes

Monocyclopentadienyl complexes in which the cyclopentadienyl system bears at least one unsubstituted, substituted or fused, 5-membered heteroaromatic ring system bound via a specific bridge, a catalyst system comprising at least one of the monocyclopentadienyl complexes, the use of the catalyst system for the polymerization or copolymerization of olefins and a process for preparing polyolefins by polymerization or copolymerization of olefins in the presence of the catalyst system and polymers obtainable in this way.

Monocyclopentadienyl complexes

Monocyclopentadienyl complexes in which the cyclopentadienyl system bears at least one unsubstituted, substituted or fused, heteroaromatic ring system bound via a specific bridge, a catalyst system comprising at least one of the monocyclopentadienyl complexes, the use of the catalyst system for the polymerization or copolymerization of olefins and a process for preparing polyolefins by polymerization or copolymerization of olefins in the presence of the catalyst system and polymers obtainable in this way.

Hydroconversion process employing multi-metallic catalysts and method for making thereof

A catalyst precursor composition and methods for making such catalyst precursor are disclosed. The catalyst precursor comprises at least a Promoter metal selected from Group VIII, Group IIB, Group IIA, Group IVA and combinations thereof, at least one Group VIB metal, at least one organic, oxygen-containing ligand, and a cellulose-containing material. The oxygen-containing ligand is an environmentally friendly/non-toxic material having an LD50 rate of >500 mg/Kg as single oral dose to rats. Catalysts prepared from the sulfidation of such catalyst precursors are used in the hydroprocessing of hydrocarbon feeds.

Hydroconversion Processes Employing Multi-Metallic Catalysts and Method for Making Thereof

A catalyst precursor composition and methods for making such a catalyst precursor are disclosed. The catalyst precursor comprises at least a promoter metal selected from Group VIII, Group IIB, Group IIA, Group IVA and combinations thereof having an oxidation state of +2 or +4, at least one Group VIB metal having an oxidation state of +6, and at least one organic oxygen-containing ligand. Catalysts prepared from the sulfidation of such catalyst precursors are used in the hydroprocessing of hydrocarbon feeds.

Hydroconversion Processes Employing Multi-Metallic Catalysts and Method for Making Thereof

A catalyst precursor composition and methods for making such catalyst precursor are disclosed. The catalyst precursor comprises at least a metal compound selected from Group VIII, Group IIB, Group IIA, Group IVA and combinations thereof, at least one Group VIB metal, at least one organic, oxygen-containing ligand, and a cellulose-containing material. Catalysts prepared from the sulfidation of such catalyst precursors are used in the hydroprocessing of hydrocarbon feeds. In one embodiment, the sulfidation is carried out by contacting the catalyst precursor with hydrogen and a sulfur containing compound in a “slow” process with the sulfidation taking place over a few days up to two weeks, e.g., for at least over 96 hours. In another embodiment, the sulfidation is in a “quick” process with the sulfidation taking place in less than 72 hours. The catalyst prepared from the slow sulfidation process gives a 700° F.+ conversion rate of at least 25% higher than the 700° F.+ conversion rate of a catalyst prepared from a quick sulfidation process.

Hydroconversion Processes Employing Multi-Metallic Catalysts and Method for Making Thereof

A catalyst precursor composition and methods for making such catalyst precursor is disclosed. The catalyst precursor comprises at least one of a Group IIB metal compound, a Group IVA metal compound, a Group IIA metal compound, and combinations thereof, at least one Group VIB metal, at least one organic, oxygen-containing ligand, and optionally a cellulose-containing material. Catalysts prepared from the sulfidation of such catalyst precursors are used in the hydroprocessing of hydrocarbon feeds. In one embodiment, the catalyst precursor is of the formula A v [(M P )(OH) x (L) n y ] z (M VIB O 4 ), wherein A comprises an alkali metal cation, an ammonium, an organic ammonium or a phosphonium cation, M P is selected from Group IIB, Group IVA and combinations thereof, having an oxidation state of either +2 or +4; L is at least one organic, oxygen-containing ligand, M VIB is at least one a Group VIB metal having an oxidation state of +6, M P :M VIB has an atomic ratio of 100:1 to 1:100; v−2+P*z−x*z+n*y*z=0; and 0≦y≦−P/n; 0≦x≦P; 0≦v≦2; 0≦z.

Hydroconversion Processes Employing Multi-Metallic Catalysts and Method for Making Thereof

A catalyst precursor composition and methods for making such catalyst precursor are disclosed. The catalyst precursor comprises at least a Promoter metal selected from Group VIII, Group IIB, Group IIA, Group IVA and combinations thereof, at least one Group VIB metal, at least one organic, oxygen-containing ligand, and a cellulose-containing material. Catalysts prepared from the sulfidation of such catalyst precursors are used in the hydroprocessing of hydrocarbon feeds. In one embodiment, the sulfidation is carried out by contacting the catalyst precursor with hydrogen and a sulfur containing compound, wherein the contacting is carried out ex-situ. Catalysts prepared from such catalyst precursors have a fouling rate of less than 8° F. (4.4° C.) per 1000 hour.

Hydroconversion Processes Employing Multi-Metallic Catalysts and Method for Making Thereof

A process for making a catalyst precursor is disclosed. In one embodiment, the process comprises co-precipitating at reaction conditions forming a precipitate or cogel: at least a promoter metal compounds selected from Group VIII, Group IIB, Group IIA, Group IVA and combinations thereof, at least one of Group VIB metal compounds, at least an organic oxygen-containing ligand L. The precursor is represented by the formula A v [(M P )(OH) x (L) n y ] z (M VIB O 4 ), wherein A comprises an alkali metal cation, an ammonium, an organic ammonium or a phosphonium cation, M P is at least one of Group VIII, Group IIB, Group IIA, Group IVA and combinations thereof, L is the organic, oxygen-containing co-ordinating ligand, M VIB is at least one of Group VIB metals, and the atomic ratio of M P :M VIB is between 100:1 and 1:100.

Hydroconversion Processes Employing Multi-Metallic Catalysts and Method for Making Thereof

A process for upgrading a hydrocarbon feedstock by hydroprocessing using multi-metallic catalysts is disclosed. In one aspect, the invention relates to hydroprocessing of a hydrocarbon feedstock using a catalyst derived from a catalyst precursor of the formula A v [(M P )(OH) x (L) n y ] z (M VIB O 4 ), wherein A comprises an alkali metal cation, an ammonium, an organic ammonium or a phosphonium cation, M P is selected from Group VIII, Group IIB, Group IIA, Group IVA and combinations thereof, L is an organic, oxygen-containing ligand, M VIB is at least one of Group VIB metals, and the atomic ratio of M VIII :M VIB is between 100:1 and 1:100.

Hydroconversion Processes Employing Multi-Metallic Catalysts and Method for Making Thereof

A catalyst precursor composition and methods for making such a catalyst precursor are disclosed. The catalyst precursor comprises at least a promoter metal selected from Group VIII, Group IIB, Group IIA, Group IVA and combinations thereof, having an oxidation state of +2 or +4, at least one Group VIB metal, at least one organic, oxygen-containing ligand, and a cellulose-containing material. In one embodiment, the catalyst precursor is of the formula A v [(M P ) (OH) x (L) n y ] z (M VIB O 4 ), wherein A is one or more monovalent cationic species, M P is selected from Group VIII, Group IIB, Group IIA, Group IVA and combinations thereof, L is one or more oxygen-containing ligands, M VIB is at least a Group VIB metal, M P :M VIB has an atomic ratio between 100:1 and 1:100. In one embodiment, catalysts prepared from the sulfidation of such catalyst precursors are used in the hydroprocessing of hydrocarbon feeds. In a hydroconversion process at a hydrogen partial pressure of ˜450 psig, the catalyst a 700° F.+ conversion rate of at least 50% of the 700° F.+ conversion results gives obtained under comparable conditions and with a hydrogen partial pressure of 600 psig.

Hydroconversion Processes Employing Multi-Metallic Catalysts and Method for Making Thereof

A catalyst precursor composition and methods for making such catalyst precursor is disclosed. In one embodiment, the catalyst precursor is of the general formula A v [(M P )(OH) x (L) n y ] z (M VIB O 4 ), wherein M P is selected from Group VIII, Group IIB, Group IIA, Group IVA and combinations thereof; L is one or more oxygen-containing ligands, and L has a neutral or negative charge n<=0, M VIB is at least a Group VIB metal having an oxidation state of +6; M P :M VIB has an atomic ratio between 100:1 and 1:100; v−2+P*z−x*z+n*y*z=0; and 0≦y≦−P/n; 0≦x≦P; 0≦v≦2; 0≦z. In one embodiment, the catalyst precursor further comprises a cellulose-containing material. In another embodiment, the catalyst precursor further comprises at least a diluent (binder). In one embodiment, the diluent is a magnesium aluminosilicate clay.

Catalysts for hydrogenation and hydrosilylation, methods of making and using the same

A compound is provided including an organometallic complex represented by the formula I: [C p M(CO) 2 (NHC)L k ] + A −   I wherein M is an atom of molybdenum or tangsten, Cp is substituted or unsubstituted cyclopentadienyl radical represented by the formula [C 5 Q 1 Q 2 Q 3 Q 4 Q 5 ], wherein Q 1 to Q 5 are independently selected from the group consisting of H radical, C 1-20 hydrocarbyl radical, substituted hydrocarbyl radical, halogen radical, halogen-substituted hydrocarbyl radical, —OR, —C(O)R′, —CO 2 R′, —SiR′ 3 and —NR′R″, wherein R′ and R″ are independently selected from the group consisting of H radical, C 1-20 hydrocarbyl radical, halogen radical, and halogen-substituted hydrocarbyl radical, wherein said Q 1 to Q 5 radicals are optionally linked to each other to form a stable bridging group, NHC is any N-heterocyclic carbene ligand, L is either any neutral electron donor ligand, wherein k is a number from 0 to 1 or L is an anionic ligand wherein k is 2, and A − is an anion. Processes using the organometallic complex as catalyst for hydrogenation of aldehydes and ketones are provided. Processes using the organometallic complex as catalyst for the hydrosilylation of aldehydes, ketones and esters are also provided.

Recyclable catalysts methods of making and using the same

Organometallic complexes are provided, which include a catalyst containing a transition metal, a ligand and a component having the formula GAr F . Ar F is an aromatic ring system selected from phenyl, naphthalenyl, anthracenyl, fluorenyl, or indenyl. The aromatic ring system has at least a substituent selected from fluorine, hydrogen, hydrocarbyl or fluorinated hydrocarbyl, G is substituted or unsubstituted (CH 2 ) n or (CF 2 ) n , wherein n is from 1 to 30, wherein further one or more CH 2 or CF 2 groups are optionally replaced by NR, PR, SiR 2 , BR, O or S, or R is hydrocarbyl or substituted hydrocarbyl, GAr F being covalently bonded to either said transition metal or said ligand of said catalyst, thereby rendering said cationic organometallic complex liquid. The catalyst of the organometallic complex can be [CpM(CO) 2 (NHC)L k ] + A − , wherein M is an atom of molybdenum or tungsten, Cp is substituted or unsubstituted cyclopentadienyl radical represented by the formula [C 5 Q 1 Q 2 Q 3 Q 4 Q 5 ], wherein Q 1 to Q 5 are independently selected from the group consisting of H radical, GAr F C 1-20 hydrocarbyl radical, substituted hydrocarbyl radical, substituted hydrocarbyl radical substituted by GAr F , halogen radical, halogen-substituted hydrocarbyl radical, —OR, —C(O)R′, —CO 2 R′, —SiR′ 3 and —NR′R″, wherein R′ and R″ are independently selected from the group consisting of H radical, C 1-20 hydrocarbyl radical, halogen radical, and halogen-substituted hydrocarbyl radical, wherein said Q 1 to Q 5 radicals are optionally linked to each other to form a stable bridging group, NHC is any N-heterocyclic carbene ligand, L is either any neutral electron donor ligand, wherein k is a number from 0 to 1 or L is an anionic ligand wherein k is 2, and A − is an anion. Processes using the organometallic complexes as catalysts in catalytic reactions, such as for example, the hydrosilylation of aldehydes, ketones and esters are also provided.

Group 5 and 6 transition metal catalyst precursors

Transition metal olefin polymerization catalyst

Transition metal olefin polymerization catalysts

This invention relates to non-Group 4 transition metal compositions useful as olefin polymerization catalysts, wherein the transition metal is in a high oxidation state. The invention further relates to design of new ligand systems and methods of preparing and using the same. Compositions useful as catalyst precursors are neutral transition metal complexes comprising the unique ligand systems of the invention. The inventive compositions may be activated to a catalytic state by ion-exchange reagents or by Lewis acids.

PRECURSORS OF TRANSITION METAL CATALYSTS OF GROUPS 5 AND 6.

ESTA INVENCION TRATA DE UNA COMPOSICION QUE NO INCLUYE UN METAL DE TRANSICION DEL GRUPO 4, QUE RESULTA UTIL COMO CATALIZADOR DE LA POLIMERIZACION DE OLEFINAS, ESTANDO EL METAL DE TRANSICION EN UNA ESTADO DE ELEVADA OXIDACION. LA INVENCION TAMBIEN TRATA DEL DISEÑO DE NUEVOS SISTEMAS DE LIGANDO Y DE PROCEDIMIENTOS PARA LA PREPARACION Y LA UTILIZACION DE LOS MISMOS. LAS COMPOSICIONES UTILES COMO PRECURSORES DE CATALIZADOR SON COMPLEJOS DE METAL DE TRANSICION NEUTROS QUE INCLUYEN LOS SISTEMAS DE LIGANDO EXCLUSIVOS DE LA INVENCION. LAS COMPOSICIONES DE LA INVENCION PUEDE ACTIVARSE PARA LOGRAR UN ESTADO CATALITICO MEDIANTE REACTIVOS DE INTERCAMBIO IONICO O MEDIANTE ACIDOS DE LEWIS. THIS INVENTION IS ABOUT A COMPOSITION THAT DOES NOT INCLUDE A TRANSITION METAL OF GROUP 4, THAT RESULTS USEFUL AS A CATALYST OF OLEFIN POLYMERIZATION, THE TRANSITIONAL METAL BEING IN A HIGH OXIDATION STATE. THE INVENTION IS ALSO ABOUT THE DESIGN OF NEW BINDING SYSTEMS AND PROCEDURES FOR THE PREPARATION AND USE OF THE SAME. USEFUL COMPOSITIONS AS CATALYST PRECURSORS ARE NEUTRAL TRANSITION METAL COMPLEXES INCLUDING THE EXCLUSIVE BINDING SYSTEMS OF THE INVENTION. THE COMPOSITIONS OF THE INVENTION CAN BE ACTIVATED TO ACHIEVE A CATALYTIC STATE THROUGH REACTIVES OF ION EXCHANGE OR THROUGH LEWIS ACIDS.

Tungsten catalysts

Catalyst precursors based on Group 5 and 6 transition metals

Transition metal olefin polymerization catalysts

OLEPHINE POLYMERIZATION CATALYSTS BASED ON TRANSITIONAL METALS.

ESTA INVENCION SE REFIERE A COMPOSICIONES DE METALES DE TRANSICION QUE NO SEAN DEL GRUPO 4 UTILES COMO CATALIZADORES PARA LA POLIMERIZACION DE OLEFINAS, EN DONDE EL METAL DE TRANSICION SE ENCUENTRA EN UN ALTO ESTADO DE OXIDACION. LA INVENCION SE REFIERE ADEMAS AL DISEÑO DE NUEVOS SISTEMAS DE LIGANDOS Y LOS METODOS PARA LA PREPARACION Y USO DE LOS MISMOS. LAS COMPOSICIONES UTILES COMO PRECURSORES CATALITICOS SON COMPLEJOS DE METALES DE TRANSICION NEUTROS QUE CONTIENEN LOS SISTEMAS DE LIGANDOS UNICOS DE LA INVENCION. LAS COMPOSICIONES DE LA INVENCION SE PUEDEN ACTIVAR A UN ESTADO CATALITICO MEDIANTE REACTIVOS DE INTERCAMBIO DE IONES O MEDIANTE ACIDOS DE LEWIS. THIS INVENTION REFERS TO TRANSITION METAL COMPOSITIONS OTHER THAN GROUP 4 USEFUL AS CATALYSTS FOR OLEPHINE POLYMERIZATION, WHERE THE TRANSITION METAL IS IN A HIGH STATE OF OXIDATION. THE INVENTION FURTHER REFERS TO THE DESIGN OF NEW LEAGUE SYSTEMS AND THE METHODS FOR THE PREPARATION AND USE OF THEM. USEFUL COMPOSITIONS AS CATALYTIC PRECURSORS ARE COMPUTERS OF NEUTRAL TRANSITION METALS CONTAINING THE UNIQUE LEAGUE SYSTEMS OF THE INVENTION. THE COMPOSITIONS OF THE INVENTION CAN BE ACTIVATED TO A CATALYTIC STATE THROUGH ION EXCHANGE REAGENTS OR THROUGH LEWIS ACIDS.

Transition Metal Olefin Polymerization Catalysts

This invention relates to non-Group 4 transition metal compositions useful as olefin polymerization catalysts, wherein the transition metal is in a high oxidation state. The invention further relates to design of new ligand systems and methods of preparing and using the same. Compositions useful as catalyst precursors are neutral transition metal complexes comprising the unique ligand systems of the invention. The inventive compositions may be activated to a catalytic state by ion-exchange reagents or by Lewis acids.

OLEFIN POLYMERIZATION CATALYSTS BASED ON TRANSITIONAL METALS

Catalyst precursors based on Group 5 and 6 transition metals

Transition metal olefin polymerization catalysts

This invention relates to non-Group 4 transition metal compositions useful as olefin polymerization catalysts, wherein the transition metal is in a high oxidation state. The invention further relates to design of new ligand systems and methods of preparing and using the same. Compositions useful as catalyst precursors are neutral transition metal complexes comprising the unique ligand systems of the invention. The inventive compositions may be activated to a catalytic state by ion-exchange reagents or by Lewis acids.

Group 5 and 6 transition metal catalyst precursors

This invention relates to non-Group 4 transition metal composition useful as olefin polymerization catalysts, wherein the transition metal is in high oxidation state. The invention further relates to design of new ligand systems and methods of preparing and using the same. Compositions useful as catalyst precursors are neutral transition metal complexes comprising the unique ligand systems of the invention. The inventive compositions may be activated to a catalytic state by ion-exchange reagents or by Lewis acids.

Monocyclopentadienyl complexes

Monocyclopentadienyl complexes

Monocyclopentadienyl complexes in which the cyclopentadienyl system bears at least one unsubstituted, substituted or fused, 5-membered heteroaromatic ring system bound via a specific bridge, a catalyst system comprising at least one of the monocyclopentadienyl complexes, the use of the catalyst system for the polymerization or copolymerization of olefins and a process for preparing polyolefins by polymerization or copolymerization of olefins in the presence of the catalyst system and polymers obtainable in this way.

Catalyst for hydrocracking hydrocarbons containing polynuclear aromatic compounds

Oil soluble catalysts are used to convert polynuclear aromatic compounds in a hydrocarbon feedstock to higher value mono-aromatic compounds. The catalyst complex includes a catalytic metal center that is bonded to a plurality of organic ligands that make the catalyst complex oil-soluble. The ligands include an aromatic ring and a ligand spacer group. The ligand spacer group provides spacing of 2-6 atoms between the metal center and the aromatic ring. The spacing between the aromatic group and the catalytic metal center advantageously allows the catalyst to selectively crack polynuclear aromatic rings while preserving one of the aromatic rings, thereby increasing the content of mono-aromatic compounds in the hydrocarbon feedstock.

Heterogeneous metathesis catalyst

Catalytic process for the oligomerization and olefinic monomers

Transition metal catalyst based on bidentate ligands containing pyridine or quinoline moiety

Disclosed is a novel bidentate pyridine transition metal catalyst having general formula (1), where Y is O, S, NR, (2), or (3), each R is independently selected from hydrogen or C1 to C6 alkyl, each R' is independently selected from C1 to C6 alkyl, C1 to C6 alkoxy, C6 to C16 aryl, halogen, or CF3, M is titanium, zirconium, or hafnium, each X is independently selected from halogen, C1 to C6 alkyl, C1 to C6 alkoxy, or (4), L is X, cyclopentadienyl, C1 to C6 alkyl substituted cyclopentadienyl, indenyl, fluorenyl, or (5), 'm' is 0 to 4, and 'n' is 1 to 4. Also disclosed is a method of making a poly-α-olefin comprising polymerizing an α-olefin monomer using that catalyst or a catalyst that has general formula (6), where Y, M, L, X, and R' were previously defined and each 'p' is independently selected from 0 to 3.

CATALYST AND PROCEDURE FOR THE EPOXIDATION OF OLEPHINE COMPOUNDS.

UNA COMPOSICION CATALIZADORA QUE TIENE UNA ALTA ACTIVIDAD DE EPOXIDACION PARA LA LIXIVIACION DE SU METAL COMPRENDE MOLIBDENO, VANADIO, TUNGSTENO Y/O TITANIO UNIDOS A UN SOPORTE ORGANICO O INORGANICO A TRAVES DE LA INTERMEDIACION DE UN LIGANTE IMIDAZOL. EL CATALIZADOR PUEDE USARSE EN LA EPOXIDACION DE COMPUESTOS OLEFINICOS. A CATALYZING COMPOSITION THAT HAS A HIGH EPOXIDATION ACTIVITY FOR THE LEACHING OF ITS METAL INCLUDES MOLYBDENUM, VANADIUM, TUNGSTEN AND / OR TITANIUM LINKED TO AN ORGANIC OR INORGANIC SUPPORT THROUGH THE INTERMEDIATION OF AN IMIGID LIGANT. THE CATALYST CAN BE USED IN THE EPOXIDATION OF OLEPHINE COMPOUNDS.

Transition metal catalyst based on bidentate ligands containing pyridine or quinoline moiety

Disclosed is a novel bidentate pyridine transition metal catalyst having general formula (1), where Y is O, S, NR, (2), or (3), each R is independently selected from hydrogen or C1 to C6 alkyl, each R' is independently selected from C1 to C6 alkyl, C1 to C6 alkoxy, C6 to C16 aryl, halogen, or CF3, M is titanium, zirconium, or hafnium, each X is independently selected from halogen, C1 to C6 alkyl, C1 to C6 alkoxy, or (4), L is X, cyclopentadienyl, C1 to C6 alkyl substituted cyclopentadienyl, indenyl, fluorenyl, or (5), 'm' is 0 to 4, and 'n' is 1 to 4. Also disclosed is a method of making a poly-α-olefin comprising polymerizing an α-olefin monomer using that catalyst or a catalyst that has general formula (6), where Y, M, L, X, and R' were previously defined and each 'p' is independently selected from 0 to 3.

Transition metal catalysts containing bidentate ligands and method of using and preparing same

Disclosed is a novel bidentate pyridine transition metal catalyst having the general formula where each R is independently hydrogen, C 1-6 alkyl, or C 6-14 aryl; where each R′ is independently R, C 1-6 alkoxy, C 7-20 alkaryl, C 7-20 aralkyl, halogen, or CF 3 ; where M is a Group 3 to 10 metal; where each X is independently halogen, C 1-6 alkyl, C 6-14 aryl, C 7-20 alkaryl, C 7-20 aralkyl, C 1-6 alkoxy, or  L is X, cyclopentadienyl, C 1-16 alkyl-substituted cyclopentadienyl, fluorenyl, indenyl, or  where n is an integer from 1 to 4; a is an integer from 1 to 3; b is an integer from 0 to 2; the sum of a+b≦3; c is an integer from 1 to 6; and the sum a+b+c equals the oxidation state of M.

Transition metal catalysts containing bidentate ligands and method of using and preparing same

Disclosed is a novel bidentate pyridine transition metal catalyst having the general formula each R is independently selected from hydrogen or C 1 to C 6 alkyl, or C 6 to C 14 aryl, each R′ is independently selected from R, C 1 to C 6 alkoxy, C 6 to C 14 aryl, C 7 to C 20 alkaryl, C 7 to C 20 aralkyl, halogen, or CF 3 , M is a Group 3 to 10 metal, each X is independently selected from halogen, C 1 to C 6 alkyl, C 6 to C 14 aryl, C 7 to C 20 alkaryl, C 7 to C 20 aralkyl, C 1 to C 6 alkoxy, or L is X, cyclopentadienyl, C 1 to C 6 alkyl substituted cyclopentadienyl, indenyl, fluorenyl, or “n” is 1 to 4; “a” is 1 to 3; “b” is 0 to 2; a+b≦3; “c” is 1 to 6; and a+b+c equals the oxidation state of M.

Converting homogeneous to heterogeneous catalysts

Homogeneous transition metal complex catalysts for organic industrial processes are converted to catalysts which are heterogeneous with respect to the reactants, and which have substantially equal catalytic activity to the homogeneous catalysts. This is done by reacting a normally homogeneous transition metal complex catalyst with a metal bridging ligand which substantially duplicates the ligand moiety of the metal complex, to provide a polymerized, normally solid, heterogeneous phase, transition metal complex catalyst.