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Применить Всего найдено 3. Отображено 3.
22-11-2016 дата публикации

Method for preparing carbene in solution, novel stable form of carbene obtained in particular by means of said method, and uses thereof in catalysis

Номер: US0009499643B2
Автор: Christian Maliverney, Laurent Saint-Jalmes, Sophie Gojon, Tsuyoshi Kato, Antoine J. Baceiredo, MALIVERNEY CHRISTIAN, SAINT-JALMES LAURENT, GOJON SOPHIE, KATO TSUYOSHI, BACEIREDO ANTOINE J, Maliverney Christian, Saint-Jalmes Laurent, Gojon Sophie, Kato Tsuyoshi, Baceiredo Antoine J.
Принадлежит: Bluestar Silicones France SAS, C.N.R.S., MALIVERNEY CHRISTIAN, SAINT-JALMES LAURENT, GOJON SOPHIE, KATO TSUYOSHI, BACEIREDO ANTOINE J, BLUESTAR SILICONES FRANCE, CENTRE NAT RECH SCIENT, Maliverney Christian, Saint-Jalmes Laurent, Gojon Sophie, Kato Tsuyoshi, Baceiredo Antoine J.

The invention relates to a method for preparing carbene by means of deprotonation of a precursor salt using a strong base. A purpose of the invention is to enhance the synthesis of carbenes, i.e. to simplify same, to make said synthesis more economical and to obtain a liquid or solid, stable and pure form constituting a catalytic system that is easy to store and use and that has a higher efficiency, higher yield and higher selectivity than carbene catalysts of the prior art. In order to do so, the method comprises deprotonation in a solvent including an alcohol. The invention also relates to an alcohol-containing solution and carbene, and to a solid that can be obtained from the solution, e.g. by means of sublimation.

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Номер записи: 1
20-03-2013 дата публикации

Method for preparing carbene in solution, novel stable form of carbene obtained in particular by means of said method, and uses thereof in catalysis

Номер: CN102985409A
Автор: Maliverney Christian, Saint-jalmes Laurent, Baceiredo Antoine J., Kato Tsuyoshi, Gojon Sophie
Принадлежит:

The invention relates to a method for preparing carbene by means of deprotonation of a precursor salt using a strong base. The purpose of the invention is to enhance the synthesis of carbenes, i.e. to simplify same, to make said synthesis more economical and to obtain a liquid or solid, stable and pure form constituting a catalytic system that is easy to store and use and that has a higher efficiency, higher yield and higher selectivity than the carbine catalysts of the prior art. In order to do so, the method comprises a deprotonation in a solvent including an alcohol. The invention also relates to an alcohol-containing solution and carbine obtained by means of said method, and to a solid that can be obtained from said solution, e.g. by means of sublimation.

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Номер записи: 2
20-06-2013 дата публикации

METHOD FOR PREPARING CARBENE IN SOLUTION, NOVEL STABLE FORM OF CARBENE OBTAINED IN PARTICULAR BY MEANS OF SAID METHOD, AND USES THEREOF IN CATALYSIS

Номер: US20130158274A1
Автор: Baceiredo Antoine J., Gojon Sophie, Kato Tsuyoshi, Maliverney Christian, Saint-Jalmes Laurent
Принадлежит: BLUESTAR SILICONES FRANCE SAS

The invention relates to a method for preparing carbene by means of deprotonation of a precursor salt using a strong base. A purpose of the invention is to enhance the synthesis of carbenes, i.e. to simplify same, to make said synthesis more economical and to obtain a liquid or solid, stable and pure form consitituting a catalytic system that is easy to store and use and that has a higher efficiency, higher yield and higher selectivity than carbene catalysts of the prior art. In order to do so, the method comprises deprotonation in a solvent including an alcohol. The invention also relates to an alcohol-containing solution and carbene, and to a solid that can be obtained from the solution, e.g. by means of sublimation. 3. The process as claimed in claim 1 , characterized in that the wherein said alcohol corresponds to formula (I°) R° OH claim 1 , in which R° corresponds to an alkyl claim 1 , cycloalkyl claim 1 , aryl claim 1 , alkenyl claim 1 , alkynyl claim 1 , arylalkyl claim 1 , silyl or siloxane group claim 1 , R° optionally being selected from the group consisting of: methyl claim 1 , ethyl claim 1 , propyl and butyl.4. The process as claimed in claim 1 , wherein said strong base is selected from the group consisting of alkali metal and alkaline earth metal hydroxides claim 1 , alkoxides claim 1 , hydrides and amides claim 1 , optionally from the subgroup consisting of: CHONa claim 1 , potassium tert-butoxide claim 1 , KOH claim 1 , NaOH claim 1 , CHCHOMgOCHCHand mixtures thereof.5. The process as claimed in claim 1 , wherein said deprotonation produces a salt which precipitates and which is separated from said solution A.6. The process as claimed in claim 1 , in which said solvent is sublimed so as to collect said carbene C in solid form.9. The solution A as claimed in claim 7 , capable of being used as a catalyst and/or in preparing a metal catalyst which is either in zero state and/or in ionized state and which comprises at least one carbene as ligand and/or ...

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Номер записи: 3