Verfahren zur Herstellung von Essigsaeure und Ameisensaeure

PRODUCTION OF CARBOXYLIC ACIDS

... 1307160 Carboxylic acids HENKEL & CIE GmbH 26 July 1971 [1 Aug 1970] 34901/71 Heading C2C Carboxylic acids (with at least 5 C atoms) are prepared in a continuous process by treating a vicinal diol (at least 6 C) with an oxygen containing gas at 40‹ to 200‹ C. in the presence of a transition metal catalyst which is a salt, oxide, sulphide or complex salt compound and a solvent with a boiling point at least 30‹ C. above the working temperature, and removing the water and lower boiling oxidation products formed. Diols may be hexanediol-1,2, octanediol-2,3, octadecanediol - 9 - 10, heptandiol - 1,2, hexanediol - 3,4, octanediol - 1,2, nonanediol- 1,2, decandiol - 1,2, octanediol - 4,5, decanediol - 5,6, dodecandiol - 6,7 hexadecandiol- 8,9, cyclohoxandiol - 1,2, 1,2 - diphenyl - 1,2- dihydroxyethane and phenyl - 1,2 - dihydroxyethane or mixtures thereof and the catalyst metals may be manganese, cobalt, copper, cerium and vanadium. Suitable solvents may be carboxylic acid esters, halogenated ...

PROCEDURE FOR the PRODUCTION OF SATISFIED CARBONIC ACIDS ALSO a UNTIL FOUR C-ATOMS BY GASEOUS PHASE OXIDATION OF 2-BUTANON

Preparation of 2,5-(hydroxymethyl)furaldehyde (HMF) , derivatives thereof and levulinic acid from fructose as well as preparation of 2 , 5-bis- (hydroxymethyl) furan from 2 , 5- (hydroxymethyl) furaldehyde

A method for utilizing an industrially convenient fructose source for a dehydration reaction converting a carbohydrate to a furan derivative is provided. Recovery methods also are provided. Embodiments of the methods improve upon the known methods of producing furan derivatives.

Process for the preparation and purification of hydroxymethylfuraldehyde and derivatives

Abstract A method for the preparation of 2,5-(hydroxymethyl)furaldehyde from fructose with specific organic solvents. A method for the preparation of 2,5-(hydroxymethyl)furaldehyde from fructose with an acid catalyst. A method for the preparation of 2,5-(hydroxymethyl)furaldehyde from 5 fructose with a two-phase organic solvent system. A method for the preparation of a 2,5 (hydroxymethyl)furaldehyde derivative from fructose. A method for the preparation of levulinic acid from fructose. A method for the preparation of 2,5-bis-(hydroxymethyl)furan from 2,5 (hydroxymethyl)furaldehyde.

Preparation of 2,5- (hydroxymethyl)furaldehyde (hmf), derivatives thereof and levulinic acid from fructose as well as preparation of 2,5-bis- (hydroxymethyl) furan from 2,5- (hydroxymethyl) furaldehyde (1)

Abstract A method for the preparation of 2,5-(hydroxymethyl)furaldehyde from fructose with specific organic solvents. A method for the preparation of 2,5-(hydroxymethyl)furaldehyde from fructose with an acid catalyst. A method for the preparation of 2,5-(hydroxymethyl)furaldehyde from 5 fructose with a two-phase organic solvent system. A method for the preparation of a 2,5 (hydroxymethyl)furaldehyde derivative from fructose. A method for the preparation of levulinic acid from fructose. A method for the preparation of 2,5-bis-(hydroxymethyl)furan from 2,5 (hydroxymethyl)furaldehyde.

Process for the preparation of carboxylic acids and esters thereof by oxidative cleavage of unsaturated fatty acids and esters thereof

CONTINUOUS PROCESS FOR THE PRODUCTION OF DERIVATIVES OF SATURATED CARBOXYLIC ACIDS

There is described a continuous process for the oxidative cleavage of derivatives of unsaturated carboxylic acids for the production of saturated carboxylic acids and their derivatives comprising the steps of: a) feeding to a first reactor at least a derivative of an unsaturated carboxylic acid, an oxidizing compound and a catalyst capable of catalyzing the oxidation reaction of the olefinic double bond to obtain an intermediate compound containing vicinal diols, and of b) feeding to a second reactor said intermediate compound, a compound containing oxygen and a catalyst capable of catalyzing the oxidation reaction of the vicinal diols to carboxylic groups, to obtain saturated monocarboxylic acids (i) and derivatives of saturated carboxylic acids with more than one acid function (ii); c) separating the saturated monocarboxylic acids (i) from the derivatives of carboxylic acids having more than one acid function (ii).

CONTINUOUS PROCESS OF OXIDATIVE CLEAVAGE OF VEGETABLE OILS

There is described a continuous process for the oxidative cleavage of vegetable oils containing triglycerides of unsaturated carboxylic acids, for the obtainment of saturated carboxylic acids, comprising the steps of: a) feeding to a first continuous reactor at least a vegetable oil, an oxidizing compound and a catalyst capable of catalyzing the oxidation reaction of the olefinic double bond to obtain an intermediate compound containing vicinal diols, and of b) feeding to a second continuous reactor said intermediate compound, a compound containing oxygen and a catalyst capable of catalyzing the oxidation reaction of the vicinal diols to carboxylic groups, to obtain saturated monocarboxylic acids (i) and triglycerides containing saturated carboxylic acids with more than one acid function (ii); c) separating the saturated monocarboxylic acids (i) from the triglycerides having more than one acid function (ii). d) hydrolyzing in a third reactor thetriglycerides having more than one acid function (ii) to obtain glycerol and saturated carboxylic acids with more than one acid function.

PROCESS FOR THE SELECTIVE OXIDATION OF KETONES

PREPARATION OF MANGANIC CARBOXYLATES FROM MANGANOUS COMPOUNDS AND OXYGEN WITH KETONE AND CARBOXYLIC ACIDS

Procédé pour l'oxydation catalytique de l'acétone

Verfahren zur Herstellung aliphatischer Estergemische

Procédé de préparation d'acides carboxyliques non aromatiques

Procédé d'oxydation de cétones asymétriques

Procédé de production de sel manganique d'acide aliphatique carboxylique

НЕПРЕРЫВНЫЙ СПОСОБ ОКИСЛИТЕЛЬНОГО РАСЩЕПЛЕНИЯ РАСТИТЕЛЬНЫХ МАСЕЛ

Описан непрерывный способ окислительного расщепления растительных масел, содержащих триглицериды ненасыщенных карбоновых кислот, для получения насыщенных карбоновых кислот, включающий стадии: а) подачи в первый реактор непрерывного действия по меньшей мере растительного масла, окисляющего соединения и катализатора, способного катализировать реакцию окисления олефиновой двойной связи с получением промежуточного соединения, содержащего вицинальные диолы, и b) подачи во второй реактор непрерывного действия этого промежуточного соединения, соединения, содержащего кислород, и катализатора, способного катализировать реакцию окисления вицинальных диолов до карбоксильных групп, с получением насыщенных монокарбоновых кислот (i) и триглицеридов, содержащих насыщенные карбоновые кислоты с более чем одной кислотной функциональной группой (ii); с) отделения насыщенных монокарбоновых кислот (i) от триглицеридов, имеющих более чем одну кислотную функциональную группу (ii), d) гидролиза в третьем реакторе ...

Catalytic oxidation synthetic method of benzoic acid compound

OXIDATION OF KETONES TO FATTY ACIDS

Improvements with the oxidation of aldehydes and ketones

5H-IMIDAZO(2,1-A) ISOINDOLE DERIVATIVES

PREPARATION OF SUBSTITUTED CYCLOPROPANECARBOXYLIC ACIDS AND THEIR ESTERS

Sуnthеsis аnd аppliсаtiоns оf 2-охо-4-mеthуlthiоbutуriс асid, its sаlts аnd its dеrivаtivеs

Тhе invеntiоn rеlаtеs tо а prосеss fоr prеpаring 2-охо-4-mеthуlthiоbutуriс асid (I), its sаlts аnd its dеrivаtivеs in whiсh R rеprеsеnts а grоup сhоsеn frоm СООН, СООR', NН2, NНR' оr NR'R'', whеrе R' аnd R'' аrе сhоsеn, indеpеndеntlу оf оnе аnоthеr, frоm thе grоup оf linеаr оr brаnсhеd аlkуl rаdiсаls hаving frоm 1 tо 12 саrbоn аtоms аnd сусlоаlkуl rаdiсаls hаving frоm 3 tо 12 саrbоn аtоms, ассоrding tо whiсh prосеss but-3-еnе-1,2-diоl (II) is саtаlуtiсаllу аnd sеlесtivеlу охidizеd tо givе 2-охоbut-3-еnоiс асid (III) аnd mеthуl mеrсаptаn is sеlесtivеlу соndеnsеd with 2-охоbut-3-еnоiс асid (III). 2-Охо-4-mеthуlthiоbutуriс асid (I), its sаlts аnd its dеrivаtivеs аrе usеd аs fооd supplеmеnt, in pаrtiсulаr in аnimаl nutritiоn.

Process for the preparation of oxygenated decaline compounds

Oxygenated decaline derivatives of formula (I) wherein X represents a COOH or a CHO group are obtained according to a process which consists in the oxidation of a ketone of formula (II) by means of oxygen in a basic medium constituted by potassium tert-butoxide in 1,2-dimethoxyethane. Compounds (I) are useful starting materials for the preparation of AMBROX TM (registered tradename of Firmenich SA, Geneva, Switzerland) which is an ingredient in perfumes.

СЕЛЕКТИВНОЕ ОТДЕЛЕНИЕ ЖЕЛЕЗА ОБРАБОТКОЙ ИОНООБМЕННОЙ СМОЛОЙ, СОДЕРЖАЩЕЙ ГРУППЫ ДИФОСФОНОВЫХ КИСЛОТ

FIELD: selective separation of iron from other ions contained in some oxidizing catalysts. SUBSTANCE: proposed method is used for repeated use of catalysts in oxidation reaction of alcohols and/or ketones to carboxylic acids and oxidation of cyclic alcohols and cyclic ketones to dicarboxylic acids, for example, oxidation of cyclohexanol and/or cyclohexanone to adipic acid. Proposed method includes treatment of solution containing oxidizing catalyst before reuse by ion-exchange resin for selective separation of iron from other metallic elements, such as copper and vanadium; ion- exchange resin contains groups of diphosphonic acids. EFFECT: enhanced efficiency of recirculation of catalyst. 13 cl, 6 dwg, 1 tbl, 7 ex

СПОСОБ ПОЛУЧЕНИЯ ПРОИЗВОДНЫХ НАСЫЩЕННЫХ КАРБОНОВЫХ КИСЛОТ

Изобретение относится к способу получения насыщенных карбоновых кислот и их производных, включающему стадии: (а) взаимодействия производного ненасыщенной жирной кислоты, в котором карбоксильная группа подготовлена к взаимодействию с образованием модифицированной карбоксильной группы таким образом, чтобы предотвратить или в любом случае минимизировать любые возможные реакции карбоксильной группы, модифицированной таким образом, в процессе осуществления способа, с окисляющим соединением в присутствии катализатора, способного катализировать реакцию окисления двойной этиленовой связи производного ненасыщенной жирной кислоты с получением промежуточного продукта реакции вицинального диола; и (б) взаимодействия указанного промежуточного соединения с кислородом, или соединением, содержащим кислород, в присутствии катализатора, способного катализировать реакцию окисления гидроксильных групп вицинального диола до карбоксильных групп, характеризующемуся тем, что обе стадии (а) и (б) осуществляют в отсутствие добавленного органического растворителя, и тем, что соотношение вода/диол в реакции стадии (б) менее чем 1:1. 30 з.п. ф-лы. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 430 905 (13) C2 (51) МПК C07C C07C C07C C07C C07C 51/245 53/126 55/02 55/18 69/48 (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2008114623/04, 21.09.2006 (24) Дата начала отсчета срока действия патента: 21.09.2006 (73) Патентообладатель(и): НОВАМОНТ С.П.А. (IT) R U Приоритет(ы): (30) Конвенционный приоритет: 23.09.2005 IT MI2005A001779 (72) Автор(ы): БАСТИОЛИ Катя (IT), МИЛИЦИА Тициана (IT), БОРСОТТИ Джампьетро (IT) (43) Дата публикации заявки: 27.10.2009 Бюл. № 30 2 4 3 0 9 0 5 2 4 3 0 9 0 5 R U (56) Список документов, цитированных в отчете о поиске: WO 9410122 A1, 11.05.1994. SANTACESARIA E; ET AL: "OXIDATIVE CLEAVAGE OF THE DOUBLE BOND OF MONOENIC FATTY CHAINS IN TWO STEPS: A ...

СИНТЕЗ И ПРИМЕНЕНИЕ 2-ОКСО-4-МЕТИЛТИОБУТАНОВОЙ КИСЛОТЫ, ЕЕ СОЛЕЙ И ПРОИЗВОДНЫХ

... 1. Способ получения 2-оксо-4-метилтиобутановой кислоты формулы (I) и ее солей, где R представляет собой карбоксильную группу и ее соли, отличающийся тем, что он включает следующие стадии: проведение каталитического и селективного окисления бут-3-ен-1,2-диола (II) с получением 2-оксо-бут-3-еновой кислоты (III) согласно следующей реакционной схеме (i): и осуществление селективной конденсации метилмеркаптана с 2-оксо-бут-3-еновой кислотой (III) согласно следующей реакционной схеме (ii): 2. Способ получения соединения формулы (I) где R представляет собой группу, выбранную из COOR', CONH2, CONHR' и CONR'R", где R' и R" выбраны, независимо друг от друга, из группы линейных или разветвленных алкильных радикалов, содержащих от 1 до 12 атомов углерода, и циклоалкильных радикалов, содержащих от 3 до 12 атомов углерода, отличающийся тем, что 2-оксо-4-метилтиобутановую кислоту (I) получают способом по п.1, а затем проводят стадию преобразования в сложный эфир или амидирования. 3. Способ по п.1 или ...

Verfahren zur Herstellung einer eine Carbonyl- und/oder Carboxylgruppe aufweisenden Verbindung

Verfahren zur Herstellung von Essigsaeure

VERFAHREN ZUR HERSTELLUNG VON SAUERSTOFF ENTHALTENDEN DECALINDERIVATEN.

PROCESS FOR THE CATALYTIC OXIDATION OF VICINAL DIOLS

... 1393338 Oxidation of vicinal diols HENKEL & CIE GmbH 16 Nov 1973 [20 Nov 1972] 53184/73 Heading C2C Carboxylic acids, aldehydes and ketones are prepared by the catalytic oxidation of vicinal diols with oxygen or gases containing oxygen in the presence of cobalt (II) ions. Polyvalent alcohols, ketones and/or hydroxy ketones, with maximum of 6 C, at least 2 oxygen or carbon atoms, and in which the number of carbon atoms exceeds the number of oxygen atoms by no more than 3, and if required as metal complexes, are added to the reaction. Organic solvents such as hydrocarbons, carboxylic acids or esters, benzonitrile and chlorobenzene may be present. The additives may be ethylene glycol, propane-1,2-diol glycerine, diacetyl, acetyl acetone, cobalt-(11)-acetylacetonate and cobalt (11) (glycol) 3 -acetate, and examples describe the oxidation of vicinal diols in the centre position of a C 14 -C 18 chain using cobalt (11) laurate catalyst with ethylene glycol, acetyl acetone additives.

Isomerization of castor oil using iron carbonyl catalyst

A method for isomerizing ricinoleic acid residues to 12-kerostearic acid residues comprises contacting a ricinoleic acid residue-containing composition consisting essentially of glycerides, non-glyceride esters and mixtures thereof having at least about 70% ricinoleic acid residues at a temperature of from about 150 DEG to about 250 DEG C with an iron carbonyl catalyst. The preferred ricinoleic acid residue-containing composition is castor oil. The 12-ketosteoric acid residues may be hydrolysed to yield the free acid which is suitable for oxidation to C10-12 dicarboxylic acids.

TRANSFORMATION OF 2,5 (HYDROXYMETHYL) FURALDEHYD IN 2,5-BIS (HYDROXYMETHYL) TETRAHYDROFURANE, AUFREINIGUNG AND INDUSTRIAL APPLICATIONS of the PRODUCT

Improved process for the production of derivatives of saturated carboxylic acids

METHOD FOR PRODUCING CARBOXYLIC ACIDS HAVING 1-3 CARBON ATOMS FROM RENEWABLE RESOURCES

The invention relates to a method for producing carboxylic acids having 1-3 carbon atoms, characterized in that 2,3-butanediol and/or acetoin are reacted to form carboxylic acids having 1-3 carbon atoms.

НЕПРЕРЫВНЫЙ СПОСОБ ОКИСЛИТЕЛЬНОГО РАСЩЕПЛЕНИЯ РАСТИТЕЛЬНЫХ МАСЕЛ

Описан непрерывный способ окислительного расщепления растительных масел, содержащих триглицериды ненасыщенных карбоновых кислот, для получения насыщенных карбоновых кислот, включающий стадии: а) подачи в первый реактор непрерывного действия, по меньшей мере, растительного масла, окисляющего соединения и катализатора, способного катализировать реакцию окисления олефиновой двойной связи с получением промежуточного соединения, содержащего вицинальные диолы, и b) подачи во второй реактор непрерывного действия этого промежуточного соединения, соединения, содержащего кислород, и катализатора, способного катализировать реакцию окисления вицинальных диолов до карбоксильных групп, с получением насыщенных монокарбоновых кислот (i) и триглицеридов, содержащих насыщенные карбоновые кислоты с более чем одной кислотной функциональной группой (ii); с) отделения насыщенных монокарбоновых кислот (i) от триглицеридов, имеющих более чем одну кислотную функциональную группу (ii), d) гидролиза в третьем реакторе ...

CONTINUOUS PROCESS OF OXIDATIVE CLEAVAGE OF VEGETABLE OILS

METHOD FOR SELECTIVE SEPARATION OF IRON FROM THE SOLUTION AND METHOD FOR RECYCLING CATALYST

СПОСОБ ПОЛУЧЕНИЯ 2-ОКСО-4-МЕТИЛТИОБУТАНОВОЙ КИСЛОТЫ, ЕЕ СОЛЕЙ И ПРОИЗВОДНЫХ, А ТАКЖЕ ПРОМЕЖУТОЧНОГО СОЕДИНЕНИЯ

Изобретение касается способа получения 4-метилтиобутановой кислоты (І), ее солей и производных формулы (І) , (І) где R является группой, выбранной из СООН, COOR', NH2, NHR', NR'", где R' и R" выбраны независимо друг от друга из группы линейных или разветвленных алкильных радикалов, которые содержат от 1 до 12 атомов углерода, и циклоалкильных радикалов, которые содержат от 3 до 12 атомов углерода, при котором проводят каталитическое и селективное окисления бут-3-ен-1,2-диола (II) с получением 2-оксо-бут-3-еновой кислоты (III) и селективную конденсацию метилмеркаптана и 2-оксо-бут-3-еновой кислоты (III).

Method for preparing aryl formic acid by adopting aryl alkyl ketone as raw material

Process of acetic production of acid and acetate of butyl secondary

MANUFACTORING PROCESS OF ACID XYLARIQUE AND USES OF THIS ONE

SYNTHESIS AND USES OF 2-OXO-4-METHYLTHIOBUTYRIC ACID, ITS SALTS AND ITS DERIVATIVES

The invention concerns a method for preparing 2-oxo-4-methylthiobutyric acid (I), its salts and its derivatives of formula (I) wherein: R represents a group selected among COOH, COOR', NH2, NHR', NR'R" where R' and R" are selected, independently of each other, from the group of linear or branched alkyl radicals having 1 to 12 carbon atoms, and cycloalkyl radicals having 3 to 12 carbon atoms. Said method consists in the catalytic and selective oxidation of but-3-ene-1,2-diol (II) into 2-oxo-but-3-enoic acid (III) and in selectively condensing the methylmercaptan on the 2-oxo-but-3-enoic acid (III). The 2-oxo-4-methylthiobutyric acid (I), its salts and its derivatives are used as food complement, in particular for animal feeding. © KIPO & WIPO 2007 ...

CONTINUOUS PROCESS OF OXIDATIVE CLEAVAGE OF VEGETABLE OILS

A continuous process for the oxidative cleavage of vegetable oils containing triglycerides of unsaturated carboxylic acids, to obtain saturated carboxylic acids, comprising feeding to a first continuous reactor a vegetable oil, an oxidizing compound and catalyst capable of catalyzing the oxidation reaction of the olefinic double bond to obtain an intermediate compound containing vicinal diols: feeding to a second continuous reactor said intermediate compound, a compound containing oxygen and a catalyst capable of catalyzing the oxidation reaction of the vicinal diols to carboxylic groups, to obtain saturated monocarboxylic acids (i) and triglycerides containing saturated carboxylic acids with more than one acid function (ii); separating the saturated monocarboxylic acids (i) from the triglycerides (ii); hydrolyzing in a third reactor the triglycerides (ii) to obtain glycerol and saturated carboxylic acids with more than one acid function; and purifying said saturated carboxylic acids by fractioned crystallization by means of wash column (melt crystallization). 1. A continuous process for the oxidative cleavage of vegetable oils containing triglycerides of unsaturated carboxylic acids , for obtaining saturated carboxylic acids , which comprises the steps of:a) feeding to a first continuous reactor at least a vegetable oil and an oxidizing compound in the presence of a catalyst capable of catalyzing the oxidation reaction of the olefinic double bond to obtain an intermediate compound containing vicinal diols;b) feeding to a second continuous reactor said intermediate compound, oxygen or a compound containing oxygen, and a catalyst capable of catalyzing the oxidation reaction of said diols to carboxylic groups, to obtain saturated monocarboxylic acids (i) and triglycerides containing saturated monocarboxylic acids with more than one acid function (ii);c) transferring the product of step b) to an apparatus suitable to separate the saturated monocarboxylic acids (i) from ...

Sуnthеsis аnd аppliсаtiоns оf 2-охо-4-mеthуlthiоbutуriс асid, its sаlts аnd its dеrivаtivеs

Тhе invеntiоn rеlаtеs tо а prосеss fоr prеpаring 2-охо-4-mеthуlthiоbutуriс асid (I), its sаlts аnd its dеrivаtivеs in whiсh R rеprеsеnts а grоup сhоsеn frоm СООН, СООR', NН2, NНR' оr NR'R'', whеrе R' аnd R'' аrе сhоsеn, indеpеndеntlу оf оnе аnоthеr, frоm thе grоup оf linеаr оr brаnсhеd аlkуl rаdiсаls hаving frоm 1 tо 12 саrbоn аtоms аnd сусlоаlkуl rаdiсаls hаving frоm 3 tо 12 саrbоn аtоms, ассоrding tо whiсh prосеss but-3-еnе-1,2-diоl (II) is саtаlуtiсаllу аnd sеlесtivеlу охidizеd tо givе 2-охоbut-3-еnоiс асid (III) аnd mеthуl mеrсаptаn is sеlесtivеlу соndеnsеd with 2-охоbut-3-еnоiс асid (III). 2-Охо-4-mеthуlthiоbutуriс асid (I), its sаlts аnd its dеrivаtivеs аrе usеd аs fооd supplеmеnt, in pаrtiсulаr in аnimаl nutritiоn.

Sуnthеsis аnd аppliсаtiоns оf 2-охо-4-mеthуlthiоbutуriс асid, its sаlts аnd its dеrivаtivеs

Тhе invеntiоn rеlаtеs tо а prосеss fоr prеpаring 2-охо-4-mеthуlthiоbutуriс асid (I), its sаlts аnd its dеrivаtivеs in whiсh R rеprеsеnts а grоup сhоsеn frоm СООН, СООR', NН2, NНR' оr NR'R'', whеrе R' аnd R'' аrе сhоsеn, indеpеndеntlу оf оnе аnоthеr, frоm thе grоup оf linеаr оr brаnсhеd аlkуl rаdiсаls hаving frоm 1 tо 12 саrbоn аtоms аnd сусlоаlkуl rаdiсаls hаving frоm 3 tо 12 саrbоn аtоms, ассоrding tо whiсh prосеss but-3-еnе-1,2-diоl (II) is саtаlуtiсаllу аnd sеlесtivеlу охidizеd tо givе 2-охоbut-3-еnоiс асid (III) аnd mеthуl mеrсаptаn is sеlесtivеlу соndеnsеd with 2-охоbut-3-еnоiс асid (III). 2-Охо-4-mеthуlthiоbutуriс асid (I), its sаlts аnd its dеrivаtivеs аrе usеd аs fооd supplеmеnt, in pаrtiсulаr in аnimаl nutritiоn.

Process for the preparation of oxygenated decaline compounds

Oxygenated decaline derivatives of formula (I) wherein X represents a COOH or a CHO group are obtained according to a process which consists in the oxidation of a ketone of formula (II) by means of oxygen in a basic medium constituted by potassium tert-butoxide in 1,2-dimethoxyethane. Compounds (I) are useful starting materials for the preparation of AMBROX TM (registered tradename of Firmenich SA, Geneva, Switzerland) which is an ingredient in perfumes.

Catalytic oxidation of non-aromatic compounds

A process for the production of oxygenated non-aromatic compounds comprises reacting in the liquid phase a non-aromatic organic feedstock with molecular oxygen in the presence of a catalyst comprising in conjoint presence bromine and a metal oxidation catalyst, at an elevated temperature and at a pressure such that a liquid phase is maintained. The metal may be added in elemental, combined or ionic form e.g. as an inorganic or organic salt or an organic complex. The bromine also may be added in elemental, combined or ionic form e.g. as bromine, ammonium bromide, potassium bromate, tetrabromethane or benzyl bromide or as a bromide of the metal catalyst. Heavy metals are the preferred catalyst metals. The amount of catalyst is generally 0.1 to 10% by weight of the feedstock. A C1-C8 monocarboxylic acid may be present, e.g. a fatty acid, phenylacetic, ethoxyacetic or benzoic acid, suitably up to about 20 parts per part of feedstock. Suitable feedstocks include hydrocarbons, oxygen-containing ...

A process for the preparation of carboxylic acids

Mono or dicarboxylic acids of the general formula wherein R1, R2 and R3 are organic groups bound with a carbon atom to the carbon atom indicated, and n is 1 or 2 with a proviso that when n is 2 the groups R1, R2 and R3 need not be identical and that at least one of the groups may be a valency bond, are made by a process which comprises contacting a ketone having the general formula with molecular oxygen or a molecular oxygen containing gas in the liquid phase, and in the presence of an acid having a dissociation constant not higher than 10-3, and an oxidation catalyst which is preferably a salt or a mixture of salts of cobalt, manganese and/or cerium. One of the R groups is preferably an unsubstituted aromatic nucleus or such a nucleus substituted with one or more hydroxyl groups, alkyl groups containing up to four carbon atoms, or halogen atoms, most preferably a benzene nucleus. A further class of starting materials comprises those wherein the R ...

A process for the production of acetic acid

Acetic acid is produced by a process in which, in a first stage, one or more n-butenes are converted by means of acetic acid into secondary butyl acetate in the presence of an acid catalyst, and, in a second stage, the secondary butyl acetate is subjected to an oxidation reaction with oxygen to form acetic acid, part of the acetic acid produced resulting from the oxidation of the secondary butyl radical. The oxidation is preferably carried out at 150 DEG to 250 DEG C. under a pressure of 30 to 100 atmospheres, and preferably the heat of reaction generated during the oxidation reaction is taken up by the reaction product which is recycled to the oxidation reactor over a cooling system.

Improvements in processes for the catalytic oxidation of acetone

The invention comprises an improvement in or modification of the process for the liquid phase oxidation of acetone claimed in the parent Specification characterized in that the oxidation is effected in the presence of an organic diluent which is other than a substance formed during the oxidation, which does not react under the operating conditions with any substance present or formed in the reaction mixture, and which is a free flowing liquid at the operating temperature, said diluent being employed together with acetic acid. The diluent may have a higher or lower boiling point than acetic acid. When the diluent has a higher boiling point it should have a low vapour tension at the oxidation temperature so that it is not eliminated with the oxidation products but when it has a lower boiling point it is partly carried away with the oxidation products and should be replaced during the reaction. Specified diluents having a higher boiling point than acetic acid are dimethyl phthalate and high ...

Process for the manufacture of maleic acid

Maleic acid or anhydride is made by oxidizing (1) an unsaturated hydrocarbon of 2 or 3 carbon atoms, or (2) a compound containing only carbon, hydrogen and oxygen and having 2 or 3 carbon atoms, in the vapour phase with an oxygen-containing gas in presence of an oxidation catalyst, and recovering the maleic acid. The temperature range may be 250-400 DEG C., and the amount of oxygen used should exceed that necessary to effect complete combustion. The mixture preferably consists of air containing 1-5 per cent of the organic compound. Catalysts specified are the oxides or salts of vanadium, bismuth, molybdenum, uranium, tungsten, chromium, and manganese, preferably the oxides of phosphorus or molybdenum. In examples, the following substances are oxidized with air using alumina or silica gel impregnated with phosphomolydic acid:-propylene, ethyl alcohol, ethylene, acetaldehyde, acetic acid, propyl alcohol, and acetone.

Procedure for the production of carbonic acids

Procedure for the production of new Imidazo [2, 1-a] - isoindolderivaten and their salts

SYNTHESIS AND USES OF 2-OXO-4METHYLTHIOBUTTERSÄURE, THEIR SALTS AND THEIR DERIVATIVES

Gold catalyst for selective oxidation

Synthesis and uses of 2-oxo-4-methylthiobutyric acid, its salts and its derivatives

Preparation of 2,5-(hydroxymethyl)furaldehyde (HMF) , derivatives thereof and levulinic acid from fructose as well as preparation of 2 , 5-bis- (hydroxymethyl) furan from 2 , 5- (hydroxymethyl) furaldehyde

Process for the preparation and purification of hydroxymethylfuraldehyde and derivatives

Abstract A method for the preparation of 2,5-(hydroxymethyl)furaldehyde from fructose with specific organic solvents. A method for the preparation of 2,5-(hydroxymethyl)furaldehyde from fructose with an acid catalyst. A method for the preparation of 2,5-(hydroxymethyl)furaldehyde from 5 fructose with a two-phase organic solvent system. A method for the preparation of a 2,5 (hydroxymethyl)furaldehyde derivative from fructose. A method for the preparation of levulinic acid from fructose. A method for the preparation of 2,5-bis-(hydroxymethyl)furan from 2,5 (hydroxymethyl)furaldehyde.

PREPARATION OF CARBOXYLIC ACIDS BY THE OXIDATION OF VICINAL GLYCOLS

FIXED BED CATALYST

A fixed bed catalyst is described, comprising activated carbon fibers and an active catalyst component or components deposited thereon wherein the activated carbon fibers are formed in a structure in which they are interwined with each other and which has such a high space-retention force as to maintain a bulk density of 0.2 g/cm3 or less at a compression load of at least 1 kg/cm2. This fixed bed catalyst allows a fluid to pass therethrough smoothly and maintains an increased contact area between the fluid and the catalyst.

FIXED BED CATALYST

CONVERSION OF 2,5-(HYDROXYMETHYL) FURALDEHYDE TO INDUSTRIAL DERIVATIVES, PURIFICATION OF THE DERIVATIVES, AND INDUSTRIAL USES THEREFOR

A method of preparing 2,5-bis(hydroxymethyl)tetrahydrofuran comprises heating a reaction mixture comprising 2,5-(hydroxymethyl)furaldehyde, an organic solvent, and a catalyst system comprising nickel and zirconium at a temperature, for a time, and at a pressure sufficient to promote reduction of the 2,5-(hydroxymethyl)furaldehyde to 2,5-bis(hydroxymethyl)tetrahydrofuran to produce a product mixture comprising 2,5-bis(hydroxymethyl)tetrahydrofuran.

PROCESS FOR THE CATALYTIC CLEAVAGE OF VEGETABLE OILS

Process for the production of saturated monocarboxylic acids and triglycerides of saturated carboxylic acids having more than one acid functionstarting from non-modified vegetable oils containing triglycerides of unsaturated fattyacids, comprising the oxidative cleavage of the unsaturated fatty acids.

PROCESSES FOR THE PREPARATION AND PURIFICATION OF HYDROXYMETHYLFURALDEHYDE AND DERIVATIVES

A method for utilizing an industrially convenient fructose source for a dehydration reaction converting a carbohydrate to a furan derivative is provided. Recovery methods also are provided. Embodiments of the methods improve upon the known methods of producing furan derivatives.

CONTINUOUS PROCESS FOR THE PRODUCTION OF DERIVATIVES OF SATURATED CARBOXYLIC ACIDS

There is described a continuous process for the oxidative cleavage of derivatives of unsaturated carboxylic acids for the production of saturated carboxylic acids and their derivatives comprising the steps of: a) feeding to a first reactor at least a derivative of an unsaturated carboxylic acid, an oxidizing compound and a catalyst capable of catalyzing the oxidation reaction of the olefinic double bond to obtain an intermediate compound containing vicinal diols, and of b) feeding to a second reactor said intermediate compound, a compound containing oxygen and a catalyst capable of catalyzing the oxidation reaction of the vicinal diols to carboxylic groups, to obtain saturated monocarboxylic acids (i) and derivatives of saturated carboxylic acids with more than one acid function (ii); c) separating the saturated monocarboxylic acids (i) from the derivatives of carboxylic acids having more than one acid function (ii).

METHOD FOR PREPARING 2,5-FURANDIALDEHYDE

A method of preparing 2,5-furandialdehyde comprising reacting, in a reaction mixture, a material comprising 2,5-(hydroxymethyl)furaldehyde, 2,2,6,6-tetramethyl-1-piperidinyloxyl; and bisacetoxyiodobenzene under reaction conditions sufficient to convert 2,5-(hydroxymethyl)furaldehyde to 2,5-furandialdehyde, thereby producing a product comprising 2,5-furandialdehyde, and isolating 2,5-furandialdehyde from the product.

Method for producing carboxylic acids having 1-3 carbon atoms from renewable resources

The invention relates to a method for producing carboxylic acids having 1-3 carbon atoms, characterized in that 2,3-butanediol and/or acetoin are reacted to form carboxylic acids having 1-3 carbon atoms.

Method of preparation of the acetic acid and the acetate of butyl

PROCESS FOR THE PREPARATION OF AZELAIC AND PELARGONIC ACIDS

PREPARATION OF CITRACONIC ANHYDRIDE

CONTINUOUS PROCESS OF OXIDATIVE CLEAVAGE OF VEGETABLE OILS

There is described a continuous process for the oxidative cleavage of vegetable oils containing triglycerides of unsaturated carboxylic acids, for the obtainment of saturated carboxylic acids, comprising the steps of: a) feeding to a first continuous reactor at least a vegetable oil, an oxidizing compound and a catalyst capable of catalyzing the oxidation reaction of the olefinic double bond to obtain an intermediate compound containing vicinal diols, and of b) feeding to a second continuous reactor said intermediate compound, a compound containing oxygen and a catalyst capable of catalyzing the oxidation reaction of the vicinal diols to carboxylic groups, to obtain saturated monocarboxylic acids (i) and triglycerides containing saturated carboxylic acids with more than one acid function (ii); c) separating the saturated monocarboxylic acids (i) from the triglycerides having more than one acid function (ii). d) hydrolyzing in a third reactor thetriglycerides having more than one acid function ...

PROCESS FOR SELECTIVELY HYDROFORMYLATING DIOLEFIN

A process for selectively hydroformylating a diolefin, which comprises reacting a (1-arylethenyl)-vinylbenzene with carbon monoxide and hydrogen under the conditions of 40 to 200°C in reaction temperature and 5 kg/cm2 or above in reaction pressure in the presence of a transition metal carbonylation catalyst to thereby selectively hydroformylating only the vinyl group and produce alpha-((1-arylethenyl)phenyl)-propionaldehyde. The starting material to be hydroformylated may be a mixture of the vinylbenzene with a 1,1-di(substituted aryl)ethylene not substituted by a vinyl group.

Porphyrins

The invention comprises new compositions of matter, which are iron, manganese, cobalt or ruthenium complexes of porphyrins having hydrogen, haloalkyl or haloaryl groups in meso positions, two of the opposed meso atoms or groups being hydrogen or haloaryl, and two of the opposed meso atoms or groups being hydrogen or haloalkyl, but not all four of the meso atoms or groups being hydrogen. The invention also comprises new compositions of matter in which all four of the meso positions are substituted with haloalkyl groups and the beta positions are substituted with halogen atoms. A new method of synthesizing porphyrinogens is also provided. The novel compositions and others made according to the process of the invention are useful as hydrocarbon conversion catalysts; for example, for the oxidation of alkanes and the decomposition of hydroperoxides.

Oxidation of ketones

Sуnthеsis аnd аppliсаtiоns оf 2-охо-4-mеthуlthiоbutуriс асid, its sаlts аnd its dеrivаtivеs

Тhе invеntiоn rеlаtеs tо а prосеss fоr prеpаring 2-охо-4-mеthуlthiоbutуriс асid (I), its sаlts аnd its dеrivаtivеs in whiсh R rеprеsеnts а grоup сhоsеn frоm СООН, СООR', NН2, NНR' оr NR'R'', whеrе R' аnd R'' аrе сhоsеn, indеpеndеntlу оf оnе аnоthеr, frоm thе grоup оf linеаr оr brаnсhеd аlkуl rаdiсаls hаving frоm 1 tо 12 саrbоn аtоms аnd сусlоаlkуl rаdiсаls hаving frоm 3 tо 12 саrbоn аtоms, ассоrding tо whiсh prосеss but-3-еnе-1,2-diоl (II) is саtаlуtiсаllу аnd sеlесtivеlу охidizеd tо givе 2-охоbut-3-еnоiс асid (III) аnd mеthуl mеrсаptаn is sеlесtivеlу соndеnsеd with 2-охоbut-3-еnоiс асid (III). 2-Охо-4-mеthуlthiоbutуriс асid (I), its sаlts аnd its dеrivаtivеs аrе usеd аs fооd supplеmеnt, in pаrtiсulаr in аnimаl nutritiоn.

Sуnthеsis аnd аppliсаtiоns оf 2-охо-4-mеthуlthiоbutуriс асid, its sаlts аnd its dеrivаtivеs

Тhе invеntiоn rеlаtеs tо а prосеss fоr prеpаring 2-охо-4-mеthуlthiоbutуriс асid (I), its sаlts аnd its dеrivаtivеs in whiсh R rеprеsеnts а grоup сhоsеn frоm СООН, СООR', NН2, NНR' оr NR'R'', whеrе R' аnd R'' аrе сhоsеn, indеpеndеntlу оf оnе аnоthеr, frоm thе grоup оf linеаr оr brаnсhеd аlkуl rаdiсаls hаving frоm 1 tо 12 саrbоn аtоms аnd сусlоаlkуl rаdiсаls hаving frоm 3 tо 12 саrbоn аtоms, ассоrding tо whiсh prосеss but-3-еnе-1,2-diоl (II) is саtаlуtiсаllу аnd sеlесtivеlу охidizеd tо givе 2-охоbut-3-еnоiс асid (III) аnd mеthуl mеrсаptаn is sеlесtivеlу соndеnsеd with 2-охоbut-3-еnоiс асid (III). 2-Охо-4-mеthуlthiоbutуriс асid (I), its sаlts аnd its dеrivаtivеs аrе usеd аs fооd supplеmеnt, in pаrtiсulаr in аnimаl nutritiоn.

PREPARATION OF 2,5-(HYDROXYMETHYL)FURALDEHYDE (HMF) FROM FRUCTOSE

СИНТЕЗ И ПРИМЕНЕНИЕ 2-ОКСО-4-МЕТИЛТИОБУТАНОВОЙ КИСЛОТЫ, ЕЕ СОЛЕЙ И ПРОИЗВОДНЫХ

FIELD: chemistry. ^ SUBSTANCE: invention relates to a method for synthesis of 2-oxo-methylthiobutanoic acid of formula (I) and its salts, , where R is a carboxyl group and its salts. The method is distinguished by that it comprises the following stages: catalytic and selective oxidation of but-3-ene-1,2-diol (II) to obtain 2-oxo-but-3-enoic acid (III) in accordance with the following reaction scheme (i): and selective condensation of methyl mercaptan with 2-oxo-but-3-enoic acid (III) in accordance with the following reaction scheme (ii): . The invention also relates to a method for synthesis of formula (I) compound, to a method for synthesis of 2-oxo-but-3-enoic acid (III), to a food additive, to a food ration, to a method of administering biologically active methionine to cattle, as well as to use of 2-oxo-4-methylthiobutanoic acid of formula (I). ^ EFFECT: obtaining 2-oxo-4-methylthiobutanoic acid, its salts and its use in feeding animals. ^ 24 cl, 8 ex, 4 tbl, 1 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 385 862 (13) C2 (51) МПК C07C C07C C07C C07C A23K 323/52 (2006.01) 323/60 (2006.01) 319/18 (2006.01) 319/20 (2006.01) 1/16 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21), (22) Заявка: 2007123486/04, 29.12.2005 (24) Дата начала отсчета срока действия патента: 29.12.2005 (72) Автор(ы): РЕЙ Патрик (FR), БЛАНШАР Жильбер (FR) (43) Дата публикации заявки: 10.02.2009 2 3 8 5 8 6 2 (45) Опубликовано: 10.04.2010 Бюл. № 10 (56) Список документов, цитированных в отчете о поиске: WO 2004/012706 A1, 12.02.2004. FR 2317919 A1, 11.02.1977. RU 2213729 C2, 10.10.2003. (85) Дата перевода заявки PCT на национальную фазу: 30.07.2007 Адрес для переписки: 191002, Санкт-Петербург, а/я 5, ООО "Ляпунов и партнеры", пат.пов. Ю.В.Кузнецовой (54) СИНТЕЗ И ПРИМЕНЕНИЕ 2-ОКСО-4-МЕТИЛТИОБУТАНОВОЙ КИСЛОТЫ, ЕЕ СОЛЕЙ И ПРОИЗВОДНЫХ (57) Реферат: Изобретение относится к способу получения 2-оксо-4-метилтиобутановой ...

СПОСОБ ПОЛУЧЕНИЯ КАРБОНОВЫХ КИСЛОТ И ИХ СЛОЖНЫХ ЭФИРОВ

Предложен способ получения карбоновых кислот и их сложных эфиров путем смешивания ненасыщенной жирной кислоты или соответствующего сложного эфира с окисляющим веществом в присутствии катализатора, выбранного из группы: оксиды вольфрама и молибдена, их кислоты и соли щелочных металлов, с получением промежуточного соединения и осуществляемого непосредственно после этого взаимодействия упомянутого промежуточного продукта без какой-либо очистки с кислородом или с кислородсодержащим газом в присутствии кобальтсодержащего соединения в качестве катализатора.

Improvements in the manufacture and production of acetic acid

Acetic acid is made by treating acetone or methylethyl ketone p in the liquid phase with oxygen or a gas containing oxygen in the presence of an oxidation catalyst. Suitable catalysts are metals having more than one valency and an atomic weight between about 50 and 200, e.g. vanadium, chromium, manganese, iron, cobalt, nickel, copper, molybdenum, cerium and other rare earth metals, tungsten, platinum, iridium, osmium and gold; the metals may be used as such or as oxides, carbonates, chlorides, sulphates, carboxylates such as formates, acetates, propionates, stearates, oleates, or tartrates, and enolates such as acetylacetonates; mixtures of catalysts may also be used, e.g. mixtures of cobalt and manganese acetates and/or acetylacetonates. The reaction may be effected in the presence of a solvent; specified solvents are formic, acetic and propionic acids and their methyl and ethyl esters, and halogenated hydrocarbons such as carbon tetrachloride and chlorobenzene; acetic or formic acid is ...

A method for the chemical utilization of coal by liquid phase oxidation

The liquid phase oxidation of coal performed with oxygen optionally in the presence of water is performed in the presence of a cooxidation partner selected from liquid hydrocarbons and oxygen-containing organic liquids, and if water is also present, the pH of the homogeneous solution formed from the cooxidation partner and water is maintained at a slightly acidic value. By the method of the invention the formation of carbon dioxide can be suppressed significantly.

PREPARATION OF CARBOXYLIC ACIDS BY THE OXIDATION OF VICINAL

... 1330205 Carboxylic acids PROCTER & GAMBLE CO 29 June 1971 [29 June 1970] 30412/71 Heading C2C Carboxylic acids are prepared by oxidizing a vicinal glycol with oxygen or oxygen-containing gas in the presence, as a catalyst, of a mixture of a cobalt (II) salt of an organic acid and peroxidized tungstic acid, tungstic oxide, molybdic acid or molybdic oxide in a polar, aprotic solvent. The vicinal glycols may be internal or terminal, e.g. 1,2-dihydroxyoctane, 1,2-dihydroxydecane, 1,2 - dihydroxydodecane, 1,2 - dihydroxytetradecane, 1,2 - dihydroxyhexadecane, 1,2-dihydroxyoctadecane and mixtures thereof and glycol derivatives of soybean oil, tallow, lard, corn oil and neats-foot oil fatty acid mixtures in particular, 9,10-dihydroxystearic acid. They may be prepared by conventional methods such as the condensation of aldehydes, hydrolysis of epoxides or dihalides, halogenation of olefines, or hydroxylation of unsaturated compounds. The solvents may be liquid sulphoxides, sulphones, phosphine ...

PROCEDURE FOR THE PRODUCTION OF XYLARSÄURE AND YOUR USE

PROCEDURE FOR THE PRODUCTION OF CARBONIC ACIDS AND YOUR ESTERS BY OXYDATIVE SPLITTING OF THE INSATIATED FATTY ACIDS AND YOUR ESTERS

PROCEDURE FOR THE PRODUCTION OF CARBONIC ACIDS

Procedure for the production of manganese (III) - salt aliphatic carbon acids

Procedure for the simultaneous production of acetic acid, formic acid and formaldehyde by continuous oxidation of acetone

PREPARATION OF CITRACONIC ANHYDRIDE

Continuous process of oxidative cleavage of vegetable oils

There is described a continuous process for the oxidative cleavage of vegetable oils containing triglycerides of unsaturated carboxylic acids, for the obtainment of saturated carboxylic acids, comprising the steps of: a) feeding to a first continuous reactor at least a vegetable oil, an oxidizing compound and a catalyst capable of catalyzing the oxidation reaction of the olefinic double bond to obtain an intermediate compound containing vicinal diols, and of b) feeding to a second continuous reactor said intermediate compound, a compound containing oxygen and a catalyst capable of catalyzing the oxidation reaction of the vicinal diols to carboxylic groups, to obtain saturated monocarboxylic acids (i) and triglycerides containing saturated carboxylic acids with more than one acid function (ii); c) separating the saturated monocarboxylic acids (i) from the triglycerides having more than one acid function (ii). d) hydrolyzing in a third reactor thetriglycerides having more than one acid function ...

Preparation of 2,5-(hydroxymethyl)furaldehyde (hmf), derivatives thereof and levulinic acid from fructose as well as preparation of 2,5-bis- (hydroxymethyl) furan from 2,5- (hydroxymethyl) furaldehyde (2)

Abstract A method for the preparation of 2,5-(hydroxymethyl)furaldehyde from fructose with specific organic solvents. A method for the preparation of 2,5-(hydroxymethyl)furaldehyde from fructose with an acid catalyst. A method for the preparation of 2,5-(hydroxymethyl)furaldehyde from 5 fructose with a two-phase organic solvent system. A method for the preparation of a 2,5 (hydroxymethyl)furaldehyde derivative from fructose. A method for the preparation of levulinic acid from fructose. A method for the preparation of 2,5-bis-(hydroxymethyl)furan from 2,5 (hydroxymethyl)furaldehyde.

CONVERSION OF 2,5-(HYDROXYMETHYL) FURALDEHYDE TO 2,5-BIS (HYDROXYMETHYL) TETRAHYDOFURAN, PURIFICATION AND INDUSTRIAL USES OF THE PRODUCT

PROCESSES FOR THE PREPARATION AND PURIFICATION OF HYDROXYMETHYLFURALDEHYDE AND DERIVATIVES

The present application discloses: A method for the preparation of 2,5- (hydroxymethyl)furaldehyde from fructose with specific organic solvents. A method for the preparation of 2,5-(hydroxymethyl)furaldehyde from fructose with an acid catalyst. A method for the preparation of 2,5- (hydroxymethyl)furaldehyde from fructose with a with a two-phase organic solvent system. A method for the preparation of a 2,5- (hydroxymethyl)furaldehyde derivative from fructose. A method for the preparation of levulinic acid from fructose. A method for the preparation of 2,5-bis-(hydroxymethyl)furan from 2,5-(hydroxymethyl)furaldehyde.

PREPARATION OF CITRACONIC ANHYDRIDE

The preparation of citraconic anhydride by continuous vapor phase oxidation of mesityl oxide, isomesityl oxide or mixtures thereof is disclosed.

PROCEDE DE PREPARATION D'ACIDES CARBOXYLIQUES ALIPHATIQUES

BREVET D'INVENTION PROCEDE DE PREPARATION D'ACIDES CARBOXYLIQUES ALIPHATIQUES Société dite : RHONE-POULENC CHIMIE INVENTEURS BREGEAULT Jean-Marie EL-ALI Bassan MARTIN Jacques DU CONTENU TECHNIQUE DE L'INVENTION La présente invention concerne un procédé de préparation d'acides carboxyliques aliphatiques par oxydation de cétones cylciques au moyen d'oxygène moléculaire ou d'un gaz en contenant. La présente invention a plus spécifiquement pour objet un procédé de préparation d'acides carboxyliques aliphatiques par oxydation de cétones monocyliques au moyen d'oxygène moléculaire ou d'un gaz en contenant, caractérisé en ce que le catalyseur est choisi parmi les composés du vanadium répondant à l'une quelconque des formules (I) et (II) ci-après : H3 + n {PM12-n VnO40}, y H2O (I) VO(Y)m (II) dans lesquelles : - n est un entier supérieur ou égal à 1 et inférieur ou égal à 6, - M représente un atome de molybdène ou de tungstène, - y est un entier, pouvant être nul, inférieur à 50, - Y représente ...

PROCESSES FOR THE PREPARATION AND PURIFICATION OF HYDROXYMETHYLFURALDEHYDE AND DERIVATIVES

A method for utilizing an industrially convenient fructose source for a dehydration reaction converting a carbohydrate to a furan derivative is provided. Recovery methods also are provided. Embodiments of the methods improve upon the known methods of producing furan derivatives.

PROCESS FOR THE PREPARATION OF CARBOXYLIC ACIDS AND ESTERS THEREOF BY OXIDATIVE CLEAVAGE OF UNSATURATED FATTY ACIDS AND ESTERS THEREOF

A process for the preparation of carboxylic acids and esters thereof, comprises the operation of mixing an unsaturated fatty acid or corresponding ester with an oxidative substance, in the presence of a catalyst belonging to the group consisting of oxides of tungsten and molybdenum and their acids and alkaline salts, obtaining an intermediate reaction product, and directly reacting said intermediate product without subjecting it to purification techniques, with oxygen or an oxygen containing gas in the presence of a cobalt containing compound which acts as catalyst.

Continuous process of oxidative cleavage of vegetable oils

A continuous process for the oxidative cleavage of vegetable oils containing triglycerides of unsaturated carboxylic acids, to obtain saturated carboxylic acids, comprising feeding to a first continuous reactor a vegetable oil, an oxidizing compound and catalyst capable of catalyzing the oxidation reaction of the olefinic double bond to obtain an intermediate compound containing vicinal diols: feeding to a second continuous reactor said intermediate compound, a compound containing oxygen and a catalyst capable of catalyzing the oxidation reaction of the vicinal diols to carboxylic groups, to obtain saturated monocarboxylic acids (i) and triglycerides containing saturated carboxylic acids with more than one acid function (ii); separating the saturated monocarboxylic acids (i) from the triglycerides (ii); hydrolyzing in a third reactor the triglycerides (ii) to obtain glycerol and saturated carboxylic acids with more than one acid function; and purifying said saturated carboxylic acids by fractioned crystallization by means of wash column (melt crystallization).

CONTINUOUS PROCESS FOR THE PRODUCTION OF DERIVATIVES OF SATURATED CARBOXYLIC ACIDS

Provided is a continuous process for the oxidative cleavage of derivatives of unsaturated carboxylic acids for the production of saturated carboxylic acids and their derivatives which comprises the steps of: 1. A. continuous process for the oxidative cleavage of derivatives of unsaturated carboxylic acids for the production of saturated carboxylic acids , which comprises the steps of:a) feeding to a first continuous reactor at least a derivative of an unsaturated carboxylic acid, an oxidizing compound and a catalyst capable of catalyzing the oxidation reaction of the olefinic double bond to obtain an intermediate compound containing vicinal diols;b) feeding to a second continuous reactor said intermediate compound, a compound containing oxygen and an aqueous phase comprising a catalyst capable of catalyzing the oxidation reaction of the vicinal diols to carboxylic groups, to obtain saturated monocarboxylic acids (i) and derivatives of saturated carboxylic acids with more than one acid function (ii), the output of this second continuous reactor comprising an aqueous phase and an organic phase;b′) separating the aqueous phase from the organic phase of the product obtained as output from step b);c) transferring the organic phase of the product of step b) to an apparatus suitable to separate the saturated monocarboxylic acids (i) from the derivatives of carboxylic acids having more than one acid function (ii)2. The continuous process according to claim 1 , wherein the said step b′) is performed by continuous centrifuging.3. The continuous process according to claim 1 , wherein the said step b′) is performed by means of a disc separator.4. The continuous process according to claim 1 , wherein in step b′) an organic solvent is added to improve the separation of the two phases.5. The continuous process according to of claim 1 , wherein the catalysts of steps a) and b) contained in the aqueous phase of step b′) are recovered and recycled as catalysts of step b).6. The ...

PROCESS FOR OXIDATION OF ALCOHOLS USING OXYGEN-CONTAINING GASES

The present invention concerns a process of oxidizing an alcohol for the production of its corresponding carbonyl compounds wherein the oxidation is performed with oxygen or gases containing oxygen in the presence of a catalyst comprising at least a gold compound and a copper compound. Said alcohol oxidation by gaseous oxidant can achieve a high yield and selectivity with minimized degradation products or waste organic solvents. 114-. (canceled)15. A composition comprising an alcohol of formula (I){'br': None, 'R—OH\u2003\u2003(I)'}{'sub': 7', '50, 'wherein R represents a saturated or unsaturated, linear, branched or cyclic C-Chydrocarbon group which optionally comprises a heteroatom and which optionally comprises a substituent, and a catalyst comprising at least a gold compound and a copper compound.'}16. The composition according to claim 15 , wherein R represents a saturated or unsaturated claim 15 , linear claim 15 , branched or cyclic C-Chydrocarbon group which optionally comprises a heteroatom claim 15 , and comprises a substituent selected from the group consisting of alkyl claim 15 , alkenyl claim 15 , aryl claim 15 , oxygen-containing group and nitrogen containing group.17. The composition according to claim 15 , wherein the alcohol is an ethoxylated alcohol of formula (II){'br': None, 'sup': 1', '2, 'sub': 2', 'n', '2', '2, 'R(OCHCHR)OCHCHOH\u2003\u2003(II)'}{'sup': 1', '2, 'wherein Rrepresents an alkyl radical having 1 to 22 carbon atoms or a monounsaturated or polyunsaturated linear or branched alkenyl radical having 2 to 22 carbon atoms, optionally comprising at least a substituent and/or a heteroatom; Rrepresents a hydrogen atom or a methyl group or a mixture thereof in the individual molecule; and n has an average number between 2 and 20.'}18. The composition of claim 17 , wherein Ris selected from a group consisting of methyl claim 17 , butyl and lauryl.19. The composition of claim 17 , wherein Ris an alkyl group substituted with at least one ...

PROCESS FOR OXIDATION OF ALCOHOLS USING OXYGEN-CONTAINING GASES

A process of oxidizing an alcohol for the production of its corresponding carbonyl compounds is disclosed, wherein the oxidation is performed with oxygen or gases containing oxygen in the presence of a catalyst comprising at least a gold compound and a copper compound. Said alcohol oxidation by gaseous oxidant can achieve a high yield and selectivity with minimized degradation products or waste organic solvents. 2. The process according to claim 1 , wherein R represents a saturated or unsaturated claim 1 , linear claim 1 , branched or cyclic C-Chydrocarbon group which optionally comprises a heteroatom claim 1 , and comprises a substituent selected from the group consisting of: alkyl claim 1 , alkenyl claim 1 , aryl claim 1 , oxygen-containing group and nitrogen containing group.4. The process of claim 3 , wherein Ris selected from a group consisting of methyl claim 3 , butyl and lauryl.5. The process of claim 3 , wherein Ris an alkyl group substituted with at least one substituent selected from a group consisting of —OR claim 3 , —CH claim 3 , —CHCH claim 3 , —COOH claim 3 , —CONHand —COOR claim 3 , wherein Rrepresents an alkyl or aryl group.7. The process of claim 6 , further comprising reacting the compounds of formula (III) with acids.9. The process of claim 8 , wherein the acid monoethanolamide of formula (IV) is lauric acid monoethanolamide.11. The process of claim 1 , wherein the catalyst is applied to a support selected from the group consisting of activated carbon and oxide supports.12. The process of claim 11 , wherein the support is an oxide support selected from the group consisting of zinc oxide claim 11 , magnesium oxide claim 11 , cerium dioxide and aluminium oxide.13. The process of claim 1 , wherein the pH during the oxidation reaction is between 9 and 15.14. The process of claim 1 , wherein the oxidation reaction occurs at a temperature between 30° C. and 100° C. The present invention concerns a process of oxidizing an alcohol for the production of ...

Process for the oxidative cleavage of vicinal diols

This invention relates to a process for obtaining monocarboxylic and dicarboxylic acids from unsaturated carboxylic acids and/or their derivatives. The said process comprises an oxidative cleavage reaction of vicinal diols into which are fed at least some of the aqueous phase separated out at the end of the reaction itself and at least one base so that the pH of the aqueous solution at the start of the oxidative cleavage reaction is between 4 and 7.

Production of maleic or fumaric acid from levulinic acid

The production of maleic acid and fumaric acid (or the anhydride form of either, maleic anhydride) via gas-phase, oxidative cleavage of levulinic acid in a single packed bed reactor over a reducible oxide catalyst. The production may be carried out in an initial mixing vessel into which levulinic acid is continuously charged and mixed with both inert (He, N 2 , Ar, etc.) and oxidizing (O 2 , air, etc.) gases. The feed stream can then be safely heated to reaction temperature, which generally ranges from 200-500° C., without initiating polymerization, in a second stage preheater that thermally equilibrates the gaseous mixture of LA, O2, and inert diluent and fed to a third stage catalytic reactor for final processing.

PROCESS FOR PRODUCING BOTH BIOBASED SUCCINIC ACID AND 2,5-FURANDICARBOXYLIC ACID

A process is provided for carrying out an oxidation on a feed including levulinic acid and/or a levulinic acid oxidation precursor to succinic acid, one or more furanic oxidation precursors of 2,5-furandicarboxylic acid and a catalytically effective combination of cobalt, manganese, and bromide components for catalyzing the oxidation of the levulinic acid component and of the one or more furanic oxidation precursors to produce both succinic acid and 2,5-furandicarboxylic acid products, which process comprises supplying the feed to a reactor vessel, supplying an oxidant, reacting the levulinic acid component and the one or more furanic oxidation precursors with the oxidant to produce both succinic acid and 2,5-furandicarboxylic acid (FDCA) and then recovering the succinic acid and FDCA products. A crude dehydration product from the dehydration of fructose, glucose or both, including 5-hydroxymethylfurfural, can be directly oxidized by the process to produce 2,5-furandicarboxylic acid and succinic acid. 1. A process for carrying out an oxidation on a feed including levulinic acid and/or a levulinic acid oxidation precursor to succinic acid , one more furanic oxidation precursors of 2 ,5-furandicarboxylic acid and a catalytically effective combination of cobalt , manganese , and bromide components for catalyzing the oxidation of the levulinic acid component and the one or more furanic oxidation precursors to produce both succinic acid and 2 ,5-furandicarboxylic acid from the feed , comprising the steps of:supplying the feed to a reactor vessel;supplying an oxidant to the reactor vessel;reacting the levulinic acid component and the one or more furanic oxidation precursors with the oxidant to produce both succinic acid and 2,5-furandicarboxylic acid; andrecovering the succinic acid and 2,5-furandicarboxylic acid as products.2. A process according to claim 1 , wherein the feed includes a liquid claim 1 , and further comprising the step of managing the exothermic ...

Process For Preparing A Carboxylic Acid

A process for preparing a carboxylic acid, including a step of bringing at least one vicinal diol or at least one vicinal polyol into contact with an atmosphere including oxygen, and a catalyst, and in the absence of additional solvent. 1. A process for preparing carboxylic acid comprising a step of placing at least one vicinal diol or at least one vicinal polyol in contact with an atmosphere comprising oxygen , a catalyst and in the absence of additional solvent , the catalyst having the formula I below:{'br': None, 'sub': n', 'm', 'p', 'q', 'r, '[AlSiOM][A]\u2003\u2003(I)'} [{'img': {'@id': 'CUSTOM-CHARACTER-00005', '@he': '3.22mm', '@wi': '2.46mm', '@file': 'US20160326084A1-20161110-P00001.TIF', '@alt': 'custom-character', '@img-content': 'character', '@img-format': 'tif'}, 'n, m and q are natural integers (), which may be identical or different, chosen, independently of each other, such that n, m and q may simultaneously be equal to 0;'}, {'img': {'@id': 'CUSTOM-CHARACTER-00006', '@he': '3.22mm', '@wi': '2.12mm', '@file': 'US20160326084A1-20161110-P00002.TIF', '@alt': 'custom-character', '@img-content': 'character', '@img-format': 'tif'}, 'p is a nonzero natural integer (*);'}, 'r is zero or;', 'M corresponds to at least one chemical element chosen from zirconium, tungsten, titanium and rare-earth metals, and', 'A corresponds to at least one chemical element chosen from alkaline-earth metals, alkali metals, rare-earth metals and titanium., 'wherein2. The process according to claim 1 , wherein the catalyst is an alumina claim 1 , a silica claim 1 , a zirconia claim 1 , an aluminosilicate claim 1 , a zeolite claim 1 , an acidic clay or mixtures thereof or a mixed oxide formed from a solid solution or a mixture of solid solutions.3. The process according to claim 1 , wherein the catalyst has a specific surface area of from 50 to 200 m/g.4. The process according to claim 1 , comprising a prior step of hydroxylation of an olefin or of hydrolysis of an epoxide.5. The ...

PRODUCTION OF CARBOXYLIC ACIDS FROM VICINAL DIOLS

The present invention relates to a process of preparation of carboxylic acids by oxidative cleavage of at least one vicinal diol or an epoxide in the presence of an oxidant comprising molecular oxygen and a heterogeneous catalyst comprising a copper oxide. 1. Process for the preparation of carboxylic acids comprisingsubjecting to oxidative cleavage at least a vicinal diol or epoxide in the presence of an oxidizing agent comprising molecular oxygen and of a heterogeneous catalyst comprising a copper oxide.2. Process according to wherein said copper oxide is a copper oxide in supported form claim 1 , a mixed oxide or a mixture thereof.3. Process according to wherein the support of the said copper oxide is selected from the group consisting of: alumina claim 2 , silica claim 2 , CeO2 claim 2 , TiO2 claim 2 , ZrO2 claim 2 , MgO claim 2 , amorphous or polycrystalline oxide substrates claim 2 , carbon claim 2 , amorphous carbon claim 2 , inorganic-organic sol-gel matrices claim 2 , zeolites claim 2 , aluminosilicates claim 2 , alkaline earth carbonates claim 2 , montmorillonites claim 2 , polymer matrices claim 2 , polyfunctional resins claim 2 , ion-exchange resins claim 2 , ceramic supports or a mixture of two or more thereof.4. Process according to wherein the said copper oxide further comprises one or more metallic elements claim 2 , in addition to a cupric and/or cuprous ion.5. Process according to wherein the said metallic elements are selected from iron claim 4 , zinc claim 4 , aluminium claim 4 , nickel and mixtures thereof.6. Process according to wherein the said vicinal diol or epoxide is prepared starting from unsaturated fatty acids or derivatives thereof.7. Process according to wherein the said derivatives are esters of unsaturated carboxylic acids with mono-alcohols and/or poly-alcohols.8. Process according to wherein the said derivatives are selected from methyl esters claim 7 , ethyl esters claim 7 , propyl esters claim 7 , butyl esters claim 7 , ...

一种催化乙酰基酸类原料氧化制备羟基二元酸的方法

本发明提供一种催化乙酰基酸类原料氧化制备羟基二元酸的方法，采用双组分催化体系；以过渡金属钌、钯、铂、金、银、镍、钴、铜、钼、铁、铑、铱中的金属或金属氧化物的一种或两种以上构成第一催化组分；以钙的碱性化合物、锶的碱性化合物中的一种或两种以上构成第二催化组分；以乙酰基酸类化合物为反应原料，在50‑170℃，氧气压力大于0.1MPa的水热条件下经过一步催化氧化过程，实现乙酰基酸类化合物高效、高选择性、高收率制备羟基二元酸。与现有的羟基二元酸合成路线相比较，本发明所提供的方法具有反应条件温和、环境友好、氧化效率高、多相催化剂易于回收，具有良好的实用性及应用前景等显著优点。

A process for producing unsaturated aldehyde and carboxylic acid

각 반응관의 원료 가스 입구측에 안티몬-함유 비스무트 몰리브데이트계 복합 산화물이 충전되고 가스 출구측에는 안티몬-비함유 비스무트 몰리브데이트계 복합 산화물 촉매가 충전되어 있는 다수의 관을 포함하는 고정층 다관식 반응기를 사용하여, 이소부틸렌 또는 3급 부탄올을 분자상 산소로 기상 촉매적 산화 반응시킴으로써 불포화 알데히드 및 불포화 카르복실산을 제조하는 방법이 제공된다. 상기 방법을 수행함으로써, 반응기에서의 뜨거운 스팟의 발생을 억제하고 촉매의 수명을 연장시키면서 불포화 알데히드 및 불포화 카르복실산을 높은 수율로 생산할 수 있다. A fixed bed multi-tubular system comprising a plurality of tubes filled with an antimony-containing bismuth molybdate-based composite oxide at the inlet side of each reaction tube and an antimony-free bismuth molybdate-based composite oxide catalyst at the gas outlet side. Using a reactor, a method is provided for producing unsaturated aldehydes and unsaturated carboxylic acids by vapor phase catalytic oxidation of isobutylene or tert-butanol with molecular oxygen. By carrying out the process, unsaturated aldehydes and unsaturated carboxylic acids can be produced in high yields while suppressing the occurrence of hot spots in the reactor and extending the life of the catalyst. 기상 촉매 산화 반응, 몰리브덴, 비스무트, 안티몬, 고정층 다관식 반응기, 알데히드, 카르복실산, 불포화, 스팟, 이소부틸렌, 3급 부탄올, 제조 방법 Gas phase catalytic oxidation, molybdenum, bismuth, antimony, fixed bed multi-tubular reactor, aldehyde, carboxylic acid, unsaturated, spot, isobutylene, tert-butanol, production method

碘膦氧配体及其制备方法和络合物、包括该络合物的催化剂体系和用途

本发明一种碘膦氧配体及其制备方法和络合物、包括该络合物的催化剂体系及其用于异辛醛氧化制备异辛酸的方法和用途，该催化剂体系是以碘膦氧配体和铯络合物为催化剂，以钾盐为催化剂助剂，氧化异辛醛制备异辛酸。本发明不但可以克服现有技术中选择性差的缺陷，而且工艺温和，配体制备简便，活性高，用量小。

一种酮类化合物氧化断裂碳碳键制备羧酸类化合物的方法

本发明涉及一种酮类化合物氧化断裂碳碳键直接制备羧酸类化合物的方法。该方法将酮类化合物与催化剂加入到有机溶剂中，放入压力容器中密闭，通入一定压力的氧源气体，反应后的产物为羧酸类化合物；所述氧源气体为氧气或空气；所述催化剂为铜盐催化剂；所述有机溶剂为乙腈、二甲基亚砜、N,N‑二甲基甲酰胺中的一种；反应后相应羧酸产物的分离收率最高达到99％。该方法适用范围广，不需要额外添加碱助剂和有机配体，分离简单。

Selective separation of iron by treatment with lon-exchanging resin comprising diphosphonic acid groups

本发明涉及一种从其他金属离子特别是某些氧化催化剂中存在的离子中选择性分离铁的方法。本发明还涉及一种使氧化催化剂在醇和/或酮生成羧酸的氧化反应中、更具体地说在环醇和/或环酮生成二元羧酸例如环己醇和/或环己酮生成己二酸的氧化反应中循环的方法。所述的方法包括在催化剂循环以前,用从其他金属元素特别是铜和钒中选择性分离铁的离子交换树脂处理含有氧化催化剂的溶液,所述的离子交换树脂含有二膦酸基(例如Diphonix)。

Method of synthesis of alcohols, ketones or their mixtures

Hydrocarbons, 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 selectively in high yields when there is employed as the catalyst a coordination complex containing an iron center and a halogenated ligand having the structure <CHEM> where Fe is iron; <CHEM> is a ligand; X is a halogen substituent of the ligand; and A is an anion.

Method for preparing hydroxy dibasic acid by catalyzing acetyl acid raw material to oxidize

本发明提供一种催化乙酰基酸类原料氧化制备羟基二元酸的方法，采用双组分催化体系；以过渡金属钌、钯、铂、金、银、镍、钴、铜、钼、铁、铑、铱中的金属或金属氧化物的一种或两种以上构成第一催化组分；以钙的碱性化合物、锶的碱性化合物中的一种或两种以上构成第二催化组分；以乙酰基酸类化合物为反应原料，在50‑170℃，氧气压力大于0.1MPa的水热条件下经过一步催化氧化过程，实现乙酰基酸类化合物高效、高选择性、高收率制备羟基二元酸。与现有的羟基二元酸合成路线相比较，本发明所提供的方法具有反应条件温和、环境友好、氧化效率高、多相催化剂易于回收，具有良好的实用性及应用前景等显著优点。

Method for oxidising hydrocarbons, alcohols or ketones using heterogeneous catalyst

本发明涉及烃、醇或者酮在液相并有多相催化剂存在下进行的氧化反应。更具体地涉及在液相、在所需羧酸至少部分的溶剂中、在有含有至少掺入分子筛晶体矩阵的锰的多相催化剂存在下采用分子氧或者含有分子氧的气体将烃、醇或酮氧化成羧酸的氧化反应。该液相含有通常选自极性质子溶剂和极性质子惰性溶剂的溶剂,更具体地选自羧酸和它们的酯。

Process for production of acrylic acid

A process for production of acrylic acid includes preparing a product gas mixture by a catalytic gas-phase oxidation of a C 3 precursor; cooling and contacting the cooled product gas mixture in an absorption column having at least two cooling loops in countercurrent with an absorbent to obtain an absorbate A, containing the absorbent and absorbed acrylic acid; condensing a high boiler fraction of the product gas mixture in a first cooling loop; condensing a low boiler fraction of the product gas mixture in a second cooling loop; maintaining a temperature of the absorbate A in the second cooling loop at a value of at least 56° C.; removing an acid water stream comprising glyoxal from the absorption column at a side take-off located above the second cooling loop; and removing a stream F of absorbate A from the absorption column at a side take-off, located at a height of the absorption column between the first cooling loop and the second cooling loop.

Method of synthesis of carboxylic acids and their esters

FIELD: organic chemistry and chemical technology. SUBSTANCE: method involves interaction of unsaturated fatty acid or the corresponding ester with oxidizing agent in the presence of catalyst taken from the group: tungsten and molybdenum oxides, their acids and alkaline metal salts and an intermediate compound is obtained. Then the synthesized compound without any purification is interacted with oxygen or oxygen-containing gas in the presence of cobalt-containing compound as a catalyst and water. EFFECT: improved method of synthesis. 8 cl, 6 ex добеггс пы Го РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) ВИ "” 2119 907. (51) МПК 13) СЛ С 07 С 51/16, 67/05, 55/18 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 95109915/04, 25.10.1993 (30) Приоритет: 29.10.1992 |Т ТО 92 А 000880 (46) Дата публикации: 10.10.1998 (56) Ссылки: 4$ 4606863 А, 1986. ЗИ 1766905 АЛ, 1992. ЕР 0123455 А, 1984 1984. СВ 1330205 А, 1973. Для публикации использовано первоначально представленное описание эаявителя с отредактированными листами. (3, 9, 10). (71) Заявитель: Новаол С.Р.Л. (1Т) (72) Изобретатель: Джимпьеро Сабарино (1Т), Андреа Гардано (1Т), Марко Фоа (1Т) (73) Патентообладатель: Новаол С.Р.Л. (Т) (54) СПОСОБ ПОЛУЧЕНИЯ КАРБОНОВЫХ КИСЛОТ И ИХ СЛОЖНЫХ ЭФИРОВ (57) Реферат: Предложен упрощенный способ получения карбоновых кислот и их сложных эфиров путем смешивания ненасыщенной жирной кислоты или соответствующего сложного эфира с окисляющим веществом в присутствии катализатора, выбранного из группы: оксиды вольфрама и молибдена, их кислоты и соли щелочных металлов, с получением промежуточного соединения и осуществляемого непосредственно после ЭТОГО взаимодействия упомянутого промежуточного продукта без какой-либо кислородом или кислородсодержащим газом в присутствии кобальтсодержащего соединения в качестве ОЧИСТКИ С катализатора и воды. 7 з.п.ф-лы. 2119907 С1 КО добеггс пы Го КУЗЗАМ АСЕМСУ ГОК РАТЕМТ$ АМО ТКАОЕМАКК$ (19) 13) ВИ” 2 119 907 Сл (51) 21° 07 С ...

Method for catalytic cleavage of vegetable oil

PROCESS FOR SEPARATING IRON FROM OTHER METAL IONS, AND PROCESS FOR RECYCLING CATALYSTS IN OXIDATION REACTIONS OF CARBOXYLIC ACID

METHOD OF SEPARATING IRON FROM OTHER METAL IONS, AND PROCESS FOR RECYCLING CATALYSTS IN CARBOXYLIC ACID ALCOHOL OXIDATION REACTIONS

The invention concerns a method for the selective separation of iron from other metal ions in particular ions present in certain oxidation catalysts. The invention also concerns a method for recycling oxidation catalysts in the oxidation reaction of alcohols and/or ketones into carboxylic acids and more particularly the oxidation of cyclic alcohols and/or cyclic ketones into dicarboxylic acids such as oxidation of cyclohexanol and/or cyclohexanone into adipic acid. Said method consists in treating the solution containing the oxidation catalyst, before recycling it, with an ion exchanging resin for selectively separating the iron from other metal elements in particular copper and vanadium, the ion exchanging resin comprising diphosphonic acid groups (for example, Diphonix)

Improvements in the manufacture of organic compounds containing oxygen, in particular carboxylic acids

Catalytic oxidation process of acetone

Process for preparing acetic acid

PROCESS FOR THE PREPARATION OF ALIPHATIC CARBOXYLIC ACIDS

La présente invention concerne un procédé de préparation d'acides carboxyliques aliphatiques par oxydation de cétones cylciques au moyen d'oxygène moléculaire ou d'un gaz en contenant. La présente invention a plus spécifiquement pour objet un procédé de préparation d'acides carboxyliques aliphatiques par oxydation de cétones monocyliques au moyen d'oxygène moléculaire ou d'un gaz en contenant, caractérisé en ce que le catalyseur est choisi parmi les composés du vanadium répondant à l'une quelconque des formules I et II ci-après : H3 + n PM1 2 - n Vn O4 0 , y H2 O I VO(Y)m II dans lesquelles : - n est un entier supérieur ou égal à 1 et inférieur ou égal à 6, - M représente un atome de molybdène ou de tungstène, - y est un entier, pouvant être nul, inférieur à 50, - Y représente un groupe acétylacétonate ou un groupement alcoxy comportant de 1 à 10 atomes, - m a pour valeur 2 ou 3. The present invention relates to a process for the preparation of aliphatic carboxylic acids by oxidation of cyclic ketones with molecular oxygen or a gas containing it. A more specific subject of the present invention is a process for the preparation of aliphatic carboxylic acids by oxidation of monocylic ketones by means of molecular oxygen or of a gas containing it, characterized in that the catalyst is chosen from vanadium compounds corresponding to to any one of the formulas I and II below: H3 + n PM1 2 - n Vn O4 0, y H2 OI VO (Y) m II in which: - n is an integer greater than or equal to 1 and less or equal to 6, - M represents a molybdenum or tungsten atom, - y is an integer, which may be zero, less than 50, - Y represents an acetylacetonate group or an alkoxy group comprising from 1 to 10 atoms, - my for value 2 or 3.

METHOD FOR PRODUCING CARBONIC ACIDS AND THEIR ESTERS THROUGH THE OXYDATIVE CUTTING OF THE UNSATURATED FATTY ACIDS AND THEIR ESTERS

Method for separating iron from other ions of metals and process for recycling catalysts during oxidation reactions of alcohols and ketones to carboxylic acids

The invention concerns a method for the selective separation of iron from other metal ions in particular ions present in certain oxidation catalysts. The invention also concerns a method for recycling oxidation catalysts in the oxidation reaction of alcohols and/or ketones into carboxylic acids and more particularly the oxidation of cyclic alcohols and/or cyclic ketones into dicarboxylic acids such as oxidation of cyclohexanol and/or cyclohexanone into adipic acid. Said method consists in treating the solution containing the oxidation catalyst, before recycling it, with an ion exchanging resin for selectively separating the iron from other metal elements in particular copper and vanadium, the ion exchanging resin comprising diphosphonic acid groups (for example, Diphonix)

Hydrocarbon Oxidation Catalyzed by Iron Coordination Complexes Containing Halogenated Ligands

Coating composition comprising 2,5-bis(hydroxymethyl) tetrahydrofuran

A coating composition having reduced volatile organic content (VOC) comprises a latex polymer comprising a pigment, a coalescent, and 2,5--bis(hydroxymethyl)tetrahydrofuran. A method of reducing the VOC of a latex paint comprises including 2,5-bis(hydroxymethyl)tetrahydrofuran in the latex paint composition.

Process for producing acetic acid

Process for the separation of iron from other metal ions, and process for recycling catalysts in reactions for the oxidation of alcohols and ketones to carboxylic acid

Alpha-(3-1-phenylethenyl) phenyl propionic aldehyde

내용 없음. No content.

Method of producing an aliphatic diacid and nitrous oxide

An aliphatic diacid and nitrous oxide are produced by the following methods: the aliphatic dibasic acid is produced by oxidation of an hydrolylated aromatic compound with nitrous oxide to form the aliphatic dibasic acid and the nitrous oxide formed by reducing a mixture of a NOx containing gas stream and ammonia is employed in the making of the aliphatic diacid.

Method for oxidizing alkanes using novel porphyrins synthesized from dipyrromethanes and aldehydes

The invention comprises a method for the oxidation of alkanes to alcohols and for decomposition of hydroperoxides to alcohols utilizing new compositions of matter, which are metal complexes of porphyrins. Preferred complexes have hydrogen, haloalkyl or haloaryl groups in meso positions, two of the opposed meso atoms or groups being hydrogen or haloaryl, and two of the opposed meso atoms or groups being hydrogen or haloalkyl, but not all four of the meso atoms or groups being hydrogen. Other preferred complexes are ones in which all four of the meso positions are substituted with haloalkyl groups and the beta positions are substituted with halogen atoms. A new method of synthesizing porphyrinogens is also disclosed.

Method of producing an aliphatic diacid and nitrous oxide

Method of oxidating hydrocarbons, alcohols or ketones using heterogenous catalysis

Process for the catalytic cleavage of vegetable oils

Process for the production of saturated monocarboxylic acids and triglycerides of saturated carboxylic acids having more than one acid functionstarting from non-modified vegetable oils containing triglycerides of unsaturated fattyacids, comprising the oxidative cleavage of the unsaturated fatty acids.

Process and device for the continuous catalytic oxidation of aldehydes and ketones

Selective separation of iron by treatment with an ion-exchanging resin comprising diphosphonic acid groups

The invention concerns a method for the selective separation of iron from other metal ions in particular ions present in certain oxidation catalysts. The invention also concerns a method for recycling oxidation catalysts in the oxidation reaction of alcohols and/or ketones into carboxylic acids and more particularly the oxidation of cyclic alcohols and/or cyclic ketones into dicarboxylic acids such as oxidation of cyclohexanol and/or cyclohexanone into adipic acid. Said method consists in treating the solution containing the oxidation catalyst, before recycling it, with an ion exchanging resin for selectively separating the iron from other metal elements in particular copper and vanadium, the ion exchanging resin comprising diphosphonic acid groups (for example, Diphonix)

Conversion of 2,5- (hydroxymethyl)furaldehyde to industrial derivatives, purification of the derivatives, and industrial uses therefor

The present invention relates to a coating composition. The coating composition includes THF-diol, a latex polymer comprising a pigment, and a coalescent. The coalescent can be, for example, 2,2,-trimethyl-1,3-pentanediol monoisobutyrate 5 propionic acid, which is available under the trade name TEXANOL*. In another embodiment the coalescent can be a composition comprising a propylene glycol monoester of one or more vegetable oil fatty acids. An example of such a coalescent is available under the trade name ARCHER RC*. The coating composition including THF diol has a reduced volatile organic content (VOC). In one non-limiting embodiment, the 10 VOC of the composition is not greater than about 50 grams per liter (g/i), and in another non-limiting embodiment is not greater than 100 g/l. THF-diol can be used as a complete or partial replacement for propylene glycol in coating compositions, and provides a lower VOC content.

Catalytic oxidation of ketones

Process for the selective oxidation of ketones

1292578 Oxidation catalysts LABOFINA SA 19 April 1971 [4 Jan 1971] 27075/71 Heading B1E [Also in Division C2] A catalyst composition comprises a inorganic salt preferably a carboxylate and a cobalt salt in a molar ratio of between 1 and 10% of the manganic salt. An example describes a mixture of manganic acetate and cobaltic or cobaltous acetate.

Process for the production of carboxylic acids

Aliphatic carboxylic acids of formulae (Ib) R1-COOH(Ia) and R2-COOH wherein R1 is tertiary C¿4-20?-alkyl and R?2¿ is selected from hydrogen and C¿1-6?-alkyl, or R?1 and R2¿ together are -(CH¿2?)n-with n = 3 to 10, are produced by oxidizing an aliphatic or alicyclic ketone of formula (II), wherein R?1 and R2¿ are as defined above, with molecular oxygen in the presence of a soluble manganese(II) compound. The process has a high selectivity and is carried out under very mild conditions. It is especially useful for the production of dicarboxylic acids such as adipic acid from cyclic ketones.

Method for oxidising hydrocarbons, alcohols or ketones using heterogeneous catalysis.

La presente invencion se refiere a la oxidacion de hidrocarburos, de alcoholes o de cetonas, en fase liquida y en presencia de un catalizador heterogéneo. Se trata más particularmente de la oxidacion a ácido carboxílico, mediante oxígeno molecular o un gas que lo contiene, de un hidrocarburo, un alcohol o una cetona, en fase líquida en un solvente al menos parcial del ácido carboxílico considerado, en presencia de un catalizador heterogéneo que incluye al menos átomos de manganeso incorporados en la red cristalina de un tamiz molecular. La fase líquida comprende un solvente en general elegido entre los solventes proticos polares, más particularmente entre los ácidos carboxílicos y sus ésteres.

METHOD FOR SELECTIVE MONOHYDROFORMYLATION OF DIOLEFINES.

Improved process for the production of derivatives of saturated carboxylic acids

A process for the production of carboxylic acids and their derivatives comprising the steps of: (c) reacting a derivative of an unsaturated fatty acid with an oxidizing compound in the presence of a catalyst capable of catalysing the reaction of oxidation of the double olefinic bond of the derivative of the unsaturated fatty acid so as to obtain as intermediate product of reaction a vicinal diol; and (d) reacting said intermediate compound with oxygen, or a compound containing oxygen, in the presence of a catalyst capable of catalysing the reaction of oxidation of the hydroxyl groups of the vicinal diol to carboxylic groups, characterized in that both of the steps (a) and (b) are carried out in the absence of added organic solvent and in that the water/diol ratio in the reaction of step (b) is less than 1:1.

Process for production of acrylic acid

The invention is related to a process for production of acrylic acid comprising the following steps: a) preparation of a product gas mixture by a catalytic gas-phase oxidation of at least one C 3 precursor compound to acrylic acid, wherein acrylic acid is formed as a main product of the catalytic gas-phase oxidation and glyoxal is formed as a by-product and the product gas mixture comprises acrylic acid and glyoxal, b) cooling of the product gas mixture, c) contacting the product gas mixture in countercourrent with an absorbent, wherein an absorbate A, comprising the absorbent and absorbed acrylic acid, is formed, d) introducing a feed stream F (2) comprising at least part of the absorbate A into arectification column comprising a rectifying section and a stripping section, e) enriching the absorbent in the stripping section and enriching acrylic acid in the rectifying section, f) withdrawing a stream C of crude acrylic acid comprising at least 90% by weight of acrylic acid out of the rectifying section as a side stream, wherein step c) is carried out in an absorption column (12) comprising at least two cooling loops, a first cooling loop (14), wherein a high boiler fraction of the product gas mixture is condensed and a second cooling loop (16), wherein a low boiler fraction of the product gas mixture is condensed, wherein a portion of the absorbate A, which comprises the feed stream F (2), is removed from the absorption column (12) at a side take-off (20), the side take-off (20) being located at the first cooling loop (14) or at a height of the absorption column (12) between the first cooling loop (14) and the second cooling loop (16) and wherein a temperature (Tc) of the absorbate A in the second cooling loop is at least 56°C.

Process for the preparation of acetic acid

A kind of method of safe synthesizing epoxypropane coproduction adipic acid

本发明属于有机化工技术领域，涉及一种安全合成环氧丙烷联产己二酸的方法。本发明提供一种安全合成环氧丙烷联产己二酸的方法，使用加压精馏装置回收丙烯，同时利用过氧化氢分解的氧气氧化环己酮制备己二酸，除去气相中的氧气，不仅实现了联产高附加值的己二酸，而且保证了工艺的本质安全，同时回收套用尾气中的丙烯和氮气，实现了资源的回收利用。本发明具有原子利用率高、工艺本质安全、资源合理化利用、VOC排放量少等优点。

SELECTIVE OXIDATION OF ALCOHOLS OR KETONS WITH A GOLD CATALYST

Process for the preparation of oxygenated decaline compounds

Continuous process of oxidative cleavage of vegetable oils

There is described a continuous process for the oxidative cleavage of vegetable oils containing triglycerides of unsaturated carboxylic acids, for the obtainment of saturated carboxylic acids, comprising the steps of: a) feeding to a first continuous reactor at least a vegetable oil, an oxidizing compound and a catalyst capable of catalyzing the oxidation reaction of the olefinic double bond to obtain an intermediate compound containing vicinal diols, and of b) feeding to a second continuous reactor said intermediate compound, a compound containing oxygen and a catalyst capable of catalyzing the oxidation reaction of the vicinal diols to carboxylic groups, to obtain saturated monocarboxylic acids (i) and triglycerides containing saturated carboxylic acids with more than one acid function (ii); c) separating the saturated monocarboxylic acids (i) from the triglycerides having more than one acid function (ii). d) hydrolyzing in a third reactor thetriglycerides having more than one acid function (ii) to obtain glycerol and saturated carboxylic acids with more than one acid function.

Improved process for the production of derivatives of saturated carboxylic acids

A process for the production of carboxylic acids and their derivatives comprising the steps of: (c) reacting a derivative of an unsaturated fatty acid with an oxidizing compound in the presence of a catalyst capable of catalysing the reaction of oxidation of the double olefinic bond of the derivative of the unsaturated fatty acid so as to obtain as intermediate product of reaction a vicinal diol; and (d) reacting said intermediate compound with oxygen, or a compound containing oxygen, in the presence of a catalyst capable of catalysing the reaction of oxidation of the hydroxyl groups of the vicinal diol to carboxylic groups, characterized in that both of the steps (a) and (b) are carried out in the absence of added organic solvent and in that the water/diol ratio in the reaction of step (b) is less than 1:1.

For the production of the method based on both the succsinic acid of biology and FDCA

提供了一种用于对一种馈料进行氧化来生产琥珀酸和2,5-呋喃二甲酸两种产物的方法，该馈料包含乙酰丙酸和/或一种针对琥珀酸的乙酰丙酸氧化前驱体、2,5-呋喃二甲酸的一种或多种呋喃氧化前驱体、以及用于催化该乙酰丙酸组分和该一种或多种呋喃氧化前驱体氧化的钴、锰以及溴化物组分的一种催化有效的组合；该方法包括将该馈料供应到一个反应容器中，供应一种氧化剂，使该乙酰丙酸组分和该一种或多种呋喃氧化前驱体与该氧化剂进行反应以生产琥珀酸和2,5-呋喃二甲酸（FDCA）二者，并且之后回收该琥珀酸和FDCA产物。可以通过该方法将来自果糖、葡萄糖或两者脱水的一种粗脱水产物（包括5-羟甲基糠醛）直接氧化，从而生产2,5-呋喃二甲酸和琥珀酸。

Continuous process of oxidative cleavage of vegetable oils

There is described a continuous process for the oxidative cleavage of vegetable oils containing triglycerides of unsaturated carboxylic acids, for the obtainment of saturated carboxylic acids, comprising the steps of: a) feeding to a first continuous reactor at least a vegetable oil, an oxidizing compound and a catalyst capable of catalyzing the oxidation reaction of the olefinic double bond to obtain an intermediate compound containing vicinal diols, and of b) feeding to a second continuous reactor said intermediate compound, a compound containing oxygen and a catalyst capable of catalyzing the oxidation reaction of the vicinal diols to carboxylic groups, to obtain saturated monocarboxylic acids (i) and triglycerides containing saturated carboxylic acids with more than one acid function (ii); c) separating the saturated monocarboxylic acids (i) from the triglycerides having more than one acid function (ii). d) hydrolyzing in a third reactor the triglycerides having more than one acid function (ii) to obtain glycerol and saturated carboxylic acids with more than one acid function.

Method for oxidizing alkanes using novel porphyrins synthesized from dipyrromethanes and aldehydes

The invention comprises a method for the oxidation of alkanes to alcohols and for decomposition of hydroperoxides to alcohols utilizing new compositions of matter, which are metal complexes of porphyrins. Preferred complexes have hydrogen, haloalkyl or haloaryl groups in meso positions, two of the opposed meso atoms or groups being hydrogen or haloaryl, and two of the opposed meso atoms or groups being hydrogen or haloalkyl, but not all four of the meso atoms or groups being hydrogen. Other preferred complexes are ones in which all four of the meso positions are substituted with haloalkyl groups and the beta positions are substituted with halogen atoms. A new method of synthesizing porphyrinogens is also disclosed.

Patent FR2207106B1

PROCESS FOR THE PREPARATION OF ALIPHATIC CARBOXYLIC ACIDS

Method for oxidizing alkanes using halocarbyl-substituted porphyrins synthesized from meso-halocarbyl-dipyrromethanes and aldehydes

The invention comprises a method for the oxidation of alkanes to alcohols and for decomposition of hydroperoxides to alcohols utilizing compounds, which are metal complexes of porphyrins, having the following structural formula. where M comprises iron, manganese, cobalt or ruthenium and (a) R⁶ is hydrogen or haloaryl, R³ is hydrogen or haloalkyl, but R⁶ and R³ are not both hydrogen, and where R¹, R², R⁴ and R⁵ are independently hydrogen, hydrocarbyl, halogen, nitro cyano or halocarbyl, or (b) R³ and R⁶ are haloalkyl and R¹, R² R⁴ and R⁵ are halogen. A new method of synthesizing porphyriongens is also disclosed.

Production of alpha-(3-benzoylphenyl)propionic acid

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Method for preparing acetic acid

Food supplement composed of 2-oxo-4-methylthiobutyric acid, its salts and its derivatives, and uses thereof

本发明涉及如式(I)所示的化合物、其盐及其衍生物组成的食物补充剂： ，其中R代表选自COOH、COOR’、NH 2 、NHR’或NR’R”的基团，其中R’和R”彼此独立地选自具有1-12个碳原子的直链或支链的烷基和具有3-12个碳原子的环烷基。所述2-羰基-4-甲基硫代丁酸(I)、其盐及其衍生物用作食物补充剂，特别是在动物营养物中。

Process for selectively monohydroformylating diolefin.

A process for selectively hydroformylating a diolefin, which comprises reacting a (1-arylethenyl)-vinylbenzene with carbon monoxide and hydrogen under the conditions of 40 to 200°C in reaction temperature and 5 kg/cm2 or above in reaction pressure in the presence of a transition metal carbonylation catalyst to thereby selectively hydroformylating only the vinyl group and produce alpha-((1-arylethenyl)phenyl)-propionaldehyde. The starting material to be hydroformylated may be a mixture of the vinylbenzene with a 1,1-di(substituted aryl)ethylene not substituted by a vinyl group.

Prepare acrylic acid

本发明涉及制备丙烯酸的方法，其包含以下步骤：a)制备产物气体混合物，通过使至少一种C 3 前体化合物生成丙烯酸的催化气相氧化而进行，其中形成催化气相氧化的主产物丙烯酸并且形成副产物乙二醛，所述产物气体混合物包含丙烯酸和乙二醛；b)冷却所述产物气体混合物；c)使产物气体混合物与吸收剂逆流接触，其中形成的被吸收物A包含吸收剂和被吸收的丙烯酸；d)将包含至少部分被吸收物A的原料流F(2)引入包括精馏段和提馏段的精馏塔中；e)在提馏段中富集吸收剂并在精馏段富集丙烯酸；f)将含有至少90重量％的丙烯酸的粗丙烯酸的物流C作为侧线物流从精馏段抽出，其中步骤c)在含有至少两个冷却回路的吸收塔(12)中进行：第一冷却回路(14)，其中冷凝产物气体混合物的高沸点馏分；以及第二冷却回路(16)，其中冷凝产物气体混合物的低沸点馏分；其中将含有料流F(2)的一部分被吸收物A从吸收塔(12)中于侧线采出(20)处移出，所述侧线采出(20)位于第一冷却回路(14)处或位于吸收塔(12)上第一冷却回路(14)和第二冷却回路(16)之间的高度处，并且其中在第二冷却回路中被吸收物A的温度(Tc)为至少56℃。

Selective oxidn of ketones to fatty acids

Liquid-phase oxidn. of asymmetric ketones, of formula R-CO-R1 (where R=olefin or paraffin of not 2 C's, opt. substd., R1 = sat. alip. rad., which is shorter than R, of not >2 C's), selectively to R-CI2H, is effected in the presence of an Mn salt. Molar ratio of Mn salt to ketone is >0.1. Reaction takes place at 20-130 degrees C in the presence of mol. O2 at a part. press. of 0.1-50 atm. Rate of reaction is high and process is extremely selective, with minimisation of side-reaction.

Continuous oxidative cleavage process of vegetable oils

Procedimiento continuo para la escisión oxidativa de aceites vegetales que contienen triglicéridos de ácidos carboxílicos insaturados para obtener ácidos carboxílicos saturados, caracterizado por que comprende las etapas de: a) suministrar a un primer reactor continuo al menos un aceite vegetal y un compuesto oxidante en presencia de un catalizador que puede catalizar la reacción de oxidación del doble enlace olefínico para obtener un compuesto intermedio que contiene dioles vecinales; b) suministrar a un segundo reactor continuo dicho compuesto intermedio, oxígeno o un compuesto que contiene oxígeno, y un catalizador que puede catalizar la reacción de oxidación de dichos dioles a grupos carboxílicos, para obtener ácidos monocarboxílicos saturados (i) y triglicéridos que contienen ácidos monocarboxílicos saturados con más de una función ácido (ii); c) transferir el producto de la etapa b) a un aparato adecuado para separar los ácidos monocarboxílicos saturados (i) de los triglicéridos que presentan más de una función ácido (ii); y d) hidrolizar en un tercer reactor dichos triglicéridos (ii) para obtener glicerol y ácidos carboxílicos saturados con más de una función ácido; e) separar dichos ácidos carboxílicos saturados con más de una función ácido por destilación en un evaporador de película fina o mediante destilación molecular antes de la etapa f); f) someter los ácidos carboxílicos evaporados con más de una función ácido a destilación en columna antes de la etapa g); g) purificar dichos ácidos carboxílicos saturados con más de una función ácido por cristalización fraccionada mediante una columna de lavado (cristalización en estado fundido); teniendo lugar las operaciones para suministrar reactivos y para retirar los productos simultáneamente durante la duración completa del procedimiento, y permaneciendo las condiciones de procedimiento sustancialmente inalteradas en cada etapa del procedimiento. Continuous process for the oxidative cleavage of vegetable oils ...

Benzoyl acetic ester derivative and preparation method thereof

내용 없음.

Process for the selective oxidation of ketones

Procedure for the selective oxidation of ketones, in the liquid phase, in the presence of a manganese salt, especially asymmetric ketones R-CO-R', in which R is a paraffinic or olefinic hydrocarbon radical, containing at least 2 carbon atoms, optionally substituted, and R'is a saturated aliphatic radical with a shorter carbon chain than R and having a maximum of 2 carbon atoms with selective formation of R-COOH acid, characterized in that the reaction takes place with a molar ratio of manganic salt: ketone higher than 0.1, at a temperature of 20 to 130ºC and in the presence of molecular oxygen at a partial pressure of 0.1 to 50 atmospheres. (Machine-translation by Google Translate, not legally binding)

Process for the preparation of carboxylic acids and esters thereof by oxidative cleavage of unsaturated fatty acids and esters thereof

A process for the preparation of carboxylic acids and esters thereof, comprises the operation of mixing an unsaturated fatty acid or corresponding ester with an oxidative substance, in the presence of a catalyst belonging to the group consisting of oxides of tungsten and molybdenum and their acids and alkaline salts, obtaining an intermediate reaction product, and directly reacting said intermediate product without subjecting it to purification techniques, with oxygen or an oxygen containing gas in the presence of a cobalt containing compound which acts as catalyst.

Method for preparing adipic acid by oxidizing cyclohexanone

本发明公开一种氧化环己酮制备己二酸的方法，具体为:以氧气或空气为氧化剂，催化剂为硝酸盐或亚硝酸盐和助剂组成的复合催化体系，在20‑120℃，将环己酮选择氧化为己二酸。该方法中催化量的硝酸盐或亚硝酸盐在助剂作用下能够在温和条件下分解生成氮氧化物，高效氧化环己酮，反应条件温和，产物易于分离和提纯。具有很好的应用前景。

Preparation method and application of vanadium-modified zirconium phosphate heterogeneous catalyst

本发明公开了一种钒修饰的磷酸锆多相催化剂的制备方法，包括以下步骤：将无定形磷酸锆和含钒化合物持续均匀研磨、焙烧，得到钒修饰的磷酸锆多相催化剂。本发明还公开了一种所述方法制备的钒修饰的磷酸锆多相催化剂在甘油选择性氧化制备甲酸中的应用。本发明的钒修饰的磷酸锆多相催化剂制备方法简单、原料廉价易得、催化活性高、稳定性好，可循环使用且活性不会有太大的损失，反应稳定性好，是一种非常有工业应用前景的催化剂。

Conversion of 2,5-(hidroxymethyl)furaldehyde to 2,5-bis(hidroxymethyl)tetrahydofuran, purification and industrial uses of the product

A method of preparing 2,5-bis(hydroxymethyl)tetrahydrofuran comprises heating a reaction mixture comprising 2,5-(hydroxymethyl)furaldehyde, an organic solvent, and a catalyst system comprising nickel and zirconium at a temperature, for a time, and at a pressure sufficient to promote reduction of the 2,5-(hydroxymethyl)furaldehyde to 2,5-bis(hydroxymethyl)tetrahydrofuran to produce a product mixture comprising 2,5-bis(hydroxymethyl)tetrahydrofuran.

Vapour phase oxidation of isopropanol

A process for the manufacture of acrolein and/or acrylic acid comprises interacting isopropanol and oxygen in the vapour phase at an elevated temperature in the presence of an oxidation catalyst comprising molybdenum, tellurium and oxygen, particularly one comprising molybdenum, tellurium, phosphorus and oxygen or one additionally containing nickel. The reaction mixture may also contain propene.

Selective oxidation of an alcohol or ketone using a gold catalyst

A supported gold catalyst is used for selective oxidation. In particular, an alcohol or ketone is oxidized to produce the corresponding carboxylic acid, an alcohol is oxidized to produce the corresponding ketone, and xylene is oxidized to produce the corresponding mono-alcohol or di-alcohol.

Catalytic oxidation of ketones

PREPARATION PROCEDURE FOR ALIPHATIC CARBOXYL ACIDS.

LA PRESENTE INVENCION SE REFIERE A UN PROCEDIMIENTO PARA LA PREPARACION DE ACIDOS CARBOXILICOS ALIFATICOS POR OXIDACION DE CETONAS CICLICAS EN MEDIO DE OXIGENO MOLECULAR O DE UN GAS QUE LO CONTIENE. MAS ESPECIFICAMENE, LA PRESENTE INVENCION TIENE POR OBJETO UN PROCEDIMIENTO PARA LA PREPARACION DE ACIDOS CARBOXILICOS ALIFATICOS POR OXIDACION DE CETONAS MONOCICLICAS EN MEDIO DE OXIGENO MOLECULAR O DE UN GAS QUE LO CONTIENE, CARACTERIZADO PORQUE EL CATALIZADOR SE ELIGE ENTRE LOS COMPUESTOS DE VANADIO DE FORMULAS H3+N(PM12-NVNO40).YH2O Y VO(Y)M, EN LAS QUE N ES UN ENTERO SUPERIOR O IGUAL A 1 E INFERIOR O IGUAL A 6, M ES UN ATOMO DE MOLIBDENO O DE WOLFRAMINO; Y ES UN ENTERO QUE PUEDE SER NULO, INFERIOR A 50; Y ES UN GRUPO ACETILACETONA O UN GRUPO ALCOXI QUE TIENE DE 1-10 ATOMOS; M TIENE POR VALOR 2 O 3. THE PRESENT INVENTION REFERS TO A PROCEDURE FOR THE PREPARATION OF ALIPHATIC CARBOXYL ACIDS BY OXIDATION OF CYCLIC KETONES IN THE MIDDLE OF MOLECULAR OXYGEN OR A GAS CONTAINING IT. MORE SPECIFICALLY, THE PRESENT INVENTION AIMS AT A PROCEDURE FOR THE PREPARATION OF ALIPHATIC CARBOXYL ACIDS BY OXIDATION OF MONOCYCLE KETONES OR OF A GAS THAT CONTAINS IT, THE SEA COMPARISON OF THE CATALYSIS IN THE CATALYSIS OF THE CATALYZE + N (PM12-NVNO40) .YH2O AND VO (Y) M, IN WHICH N IS AN INTEGER SUPERIOR OR EQUAL TO 1 AND LOWER OR EQUAL TO 6, M IS AN ATOME OF MOLYBDENUM OR WOLFRAMINO; AND IT IS AN INTEGER THAT CAN BE NULL, LESS THAN 50; AND IT IS AN ACETYLACETONE GROUP OR ALCOXY GROUP THAT HAS 1-10 ATOMS; M HAS A VALUE OF 2 OR 3.

METHOD FOR PRODUCING AZELAIN AND PELARGONIC ACID

Continuous process of oxidative cleavage of vegetable oils

There is described a continuous process for the oxidative cleavage of vegetable oils containing triglycerides of unsaturated carboxylic acids, for the obtainment of saturated carboxylic acids, comprising the steps of: a) feeding to a first continuous reactor at least a vegetable oil, an oxidizing compound and a catalyst capable of catalyzing the oxidation reaction of the olefinic double bond to obtain an intermediate compound containing vicinal diols, and of b) feeding to a second continuous reactor said intermediate compound, a compound containing oxygen and a catalyst capable of catalyzing the oxidation reaction of the vicinal diols to carboxylic groups, to obtain saturated monocarboxylic acids (i) and triglycerides containing saturated carboxylic acids with more than one acid function (ii); c) separating the saturated monocarboxylic acids (i) from the triglycerides having more than one acid function (ii). d) hydrolyzing in a third reactor thetriglycerides having more than one acid function (ii) to obtain glycerol and saturated carboxylic acids with more than one acid function.

Process for the production of 4-alkanoyloxy-2-methylbutanoic acid

본 발명은 4-알킬옥시-2-메틸부탄산의 개선된 제조 방법, 및 이런 화합물의 유기 합성, 특히 이소프렌(=이소터펜) 단위를 포함하는 유기 화합물, 예컨대 β-카로텐 또는 다른 카로테노이드(예를 들면, 칸타잔틴, 제아잔틴 또는 아스타잔틴), 또는 비타민 E 또는 비타민 A 및 다른 구조적으로 유사한 화합물의 합성을 위한 중간체(빌딩 블록) 제조 공정에서의 용도에 관한 것이다. The present invention provides an improved process for the production of 4-alkyloxy-2-methylbutanoic acid, and organic synthesis of such compounds, especially organic compounds comprising isoprene (= isoterpene) units, such as β-carotene or other carotenoids (e.g. For example, it relates to the use in an intermediate (building block) manufacturing process for the synthesis of canthaxanthin, zeaxanthin or astaxanthin), or vitamin E or vitamin A and other structurally similar compounds.

Preparation of levulinic acid from fructose using an acid catalyst, a polyethylene glycol and an end-capped polyethylene glycol

A method of preparing levulinic acid comprising: combining a fructose source, at least one of polyethylene glycol and end capped polyethylene glycol, and an acid catalyst to form a reaction mixture; heating the reaction mixture to a temperature and for a time sufficient to promote an acid-catalyzed dehydration reaction of fructose in the fructose source and to form levulinic acid in a product mixture; and isolating levulinic acid from said product mixture.

A kind of coproduction adipic acid and the method for KA oil

本发明公开了一种联产己二酸和KA油的方法，包括以下步骤：(a)初次氧化：向初次氧化反应器中连续通入环己烷、催化剂和含氧气体进行反应，得到含有己二酸和KA油的初次氧化反应液；(b)二次氧化：初次氧化反应液连续加入二次氧化反应器中，并往二次氧化反应器中连续加入水和含氧气体进行反应，得到二次氧化反应混合物；(c)液液分层：二次氧化反应混合物进入液液分层器中分层，得到含有环己烷和六碳含氧化合物的上层油相和含有己二酸和KA油的下层水相；(d)水相产物的分离：将含己二酸和KA油的下层水相进行分离提纯分别得到KA油和己二酸产品。本发明具有反应条件温和、产品收率高、选择性好、绿色环保的优点。

Method of preparing aliphatic carboxylic acid

La présente invention concerne un procédé de préparation d'acides carboxyliques aliphatiques par oxydation de cétones cycliques au moyen d'oxygène moléculaire ou d'un gaz en contenant. The present invention relates to a process for the preparation of acids aliphatic carboxyls by oxidation of cyclic ketones using molecular oxygen or a gas containing it. La présente invention a plus spécifiquement pour objet un procédé de préparation d'acides carboxyliques aliphatiques par oxydation de cétones monocycliques au moyen d'oxygène moléculaire ou d'un gaz en contenant, caractérisé en ce que le catalyseur est choisi parmi les composés du vanadium répondant à l'une quelconque des formules (I) et (II) ci-après : H 3 + n {PM 12-n V n O₄₀}, y H₂O      (I) VO(Y) m       (II) dans lesquelles : - n est un entier supérieur ou égal à 1 et inférieur ou égal à 6, - M représente un atome de molybdène ou de tungstène, - y est un entier, pouvant être nul, inférieur à 50, - Y représente un groupe acétylacétonate ou un groupement alcoxy comportant de 1 à 10 atomes, - m a pour valeur 2 ou 3. A more specific subject of the present invention is a process for the preparation of aliphatic carboxylic acids by oxidation of monocyclic ketones by means of molecular oxygen or of a gas containing them, characterized in that the catalyst is chosen from the corresponding vanadium compounds to any of the formulas (I) and (II) below: H 3 + n {PM 12-n V n O₄₀}, y H₂O (I) VO (Y) m (II) in which : - n is an integer greater than or equal to 1 and less than or equal to 6, - M represents a molybdenum or tungsten atom, - y is an integer, possibly zero, less than 50, Y represents an acetylacetonate group or an alkoxy group comprising from 1 to 10 atoms, - ma for value 2 or 3.

The preparation method of 2,4 dichloro fluorobenzene

本发明公开了一种2,4‑二氯氟苯的制备方法，包括如下步骤：（1）利用2,6‑二氯‑3‑氟苯乙酮为原料，将上述原料放入溶剂中，溶剂选自以下的一种：环丁砜、甲酸和乙酸，溶剂的用量1g:1～5mL；在铜盐的催化下氧气氧化反应得到2,6‑二氯‑3‑氟苯甲酸；（2）将步骤（1）得到的2,6‑二氯‑3‑氟苯乙酮在催化剂DBU和铜盐存在下，经脱羧得到2,4‑二氯氟苯。本发明可解决如何回收2,4‑二氯氟苯的方法。

Method of preparing aliphatic carboxylic acid

내용없음. None.

Process for the production of manganic carboxylates

A PROCESS FOR THE PRODUCTION OF THE MANGANIC SALT OF AN ALIPHATIC CARBOXYLIC ACID, WHICH COMPRISES TREATING IN LIQUID PHASE BY AN OXYGEN CONTAINING GAS, A MANGANOUS COMPOUND FROM THE GROUP CONSISTING OF MANGANOUS SALT OF SAID CARBOXYLIC ACID, AMANGANOUS SALT OF A WEAKER THAN SAID CARBOXYLIC ACID, MANGANOUS OXIDE AND MANGANOUS HYDROXIDE, IN THE PRESENCE OF A KETONE HAVING THE FORMULA R-CO-R1, WHEREIN R IS AN ALIPHATIC OR AROMATIC RADICAL AND R1 IS AN ALIPHATIC RADICAL OR FORMS WITH R A CYCLOALKANE RADICAL, AND IN THE PRESENCE OF SAID CARBOXYLIC ACID OF WHICH SAID MANGANIC SALT IS A DERIVATIVE, AT A TEMPERATURE FROM 50 TO 130*C.

Process for preparation of 2-arylpropionic acid

본 발명은 2-아릴프로피온산의 제조방법에 관한 것으로서, 더욱 상세하게는 낮은 압력하에서 다음 구조식(II)로 표시되는 1-아릴에틸 알코올, 촉매, 할로겐 화전이금속 조촉매, 트리페닐포스핀, 중합방지제 및 염화수소 등을 사용하여 카르보닐화 반응시켜 높은 수율로 다음 구조식(I)로 표시되는 2-아릴프로피온산을 제조하는 방법에 관한 것이다. The present invention relates to a method for preparing 2-arylpropionic acid, and more particularly, under low pressure, 1-arylethyl alcohol, a catalyst, a halogenated transition metal promoter, triphenylphosphine, and polymerization, represented by the following structural formula (II). The carbonylation reaction using an inhibitor, hydrogen chloride, etc. relates to a method for producing 2-arylpropionic acid represented by the following structural formula (I) in high yield. 상기식에서, Ar은 p-페닐-m-플루오로페닐기, m-벤조일페닐기, m-페녹시페닐기, C 1 ∼C 6 의 직쇄 또는 측쇄 알킬기로 치환된 p-알킬페닐기, 또는 6-메톡시나프틸기이다. Wherein Ar is p-phenyl-m-fluorophenyl group, m-benzoylphenyl group, m-phenoxyphenyl group, p-alkylphenyl group substituted with C 1 -C 6 linear or branched alkyl group, or 6-methoxynaph Til group.

Process for preparing saturated carboxylic acids having from one to four carbon atoms by gas-phase oxidation of 2-butanone

A process for preparing saturated carboxylic acids having from one to four carbon atoms by gas-phase oxidation, includes reacting 2-butanone with oxygen over a coated catalyst which is an inert nonporous support body and a catalytically active mixed oxide composition comprising (a) one or more oxides selected from the group consisting of titanium dioxide, zirconium dioxide, tin dioxide and aluminum oxide, and (b) from 0.1% to 1.5% by weight, based on the weight of the component (a) and per m 2 /g of specific surface area of the component (a), of vanadium pentoxide, applied to the external surface of the support body.

Synthetic method of 3,3',4,4' -biphenyltetracarboxylic acid

本发明公开了一种3,3',4,4'‑联苯四甲酸的合成方法，它是以4,4'‑二甲基联苯为起始原料，先与式Ⅰ的环状酸酐进行傅克酰基化反应得到中间体Ⅱ，再经氧化反应得到3,3',4,4'‑联苯四甲酸，式Ⅰ的环状酸酐为丁二酸酐、戊二酸酐、己二酸酐或者马来酸酐。本发明的方法无需价格昂贵的催化体系，大大降低了合成3,3',4,4'‑联苯四甲酸的生产成本；本发明的方法操作简单，反应条件温和，而且三废少，废水易于处理，对环境也友好；本发明采用的原料4,4'‑二甲基联苯为医药中间体沙坦联苯的副产物，该副产物占沙坦联苯生产量的10%左右，将该副产物应用到合成3,3',4,4'‑联苯四甲酸上，还能实现变废为宝。

Conversion of 2,5-(hydroxymethyl)furaldehyde to 2,5-bis(hydroxymethyl)tetrahydofuran, purification and industrial uses of the product

A method of preparing 2,5-bis(hydroxymethyl)tetrahydrofuran comprises heating a reaction mixture comprising 2,5-(hydroxymethyl)furaldehyde, an organic solvent, and a catalyst system comprising nickel and zirconium at a temperature, for a time, and at a pressure sufficient to promote reduction of the 2,5-(hydroxymethyl)furaldehyde to 2,5-bis(hydroxymethyl)tetrahydrofuran to produce a product mixture comprising 2,5-bis(hydroxymethyl)tetrahydrofuran.