Centre National De La Recherche Scientifique

Bluestar Silicones France Sas

Elkem Silicones France Sas

Rhodia Chimie

Cnrs

Vencorex Frence

Centre National De La Recherche Scientifique-cnrs

Bluestar Silicones France

Vencorex France

Antoine Baceiredo

Tsuyoshi Kato

Laurent Saint-Jalmes

Sébastien Marrot

Etienne Fleury

Yanli Mao

Ricardo Rodriguez

Christian Maliverney

Gerard Mignani

Mathias Destarac

Sébastien Sterin

Olivier Buisine

Yves Gnanou

Daniel Taton

Magali Bousquie

Delphine Blanc-Magnard

Magali Bousquié

Raphael Mirgalet

Sophie Gojon

Gopakumar Sivasankarapillai

Fabien Bonnette

Juliette Berthe

Larent Saint-Jalmes

Amparo Prades

Norio Nakata

Gérard Mignani

Raphaël Mirgalet

Magali BousquiÉ

The invention relates to a method for hydrosilylating an unsaturated compound comprising at least one ketone function, one aldehyde function, one alkene function and/or one alkyne function, with a compound comprising at least one hydrogenosilyl function, using an organic germanium catalyst.

Hydrosilylation process using a germylene-based organic catalyst

The present invention concerns a method for the hydrosilylation of an unsaturated compound comprising at least one ketone function, one aldehyde function, one alkene function and/or one alkyne function, with a compound comprising at least one hydrogen-silyl function implementing an organic catalyst of tri-coordinated germanium.

Method of hydrosilylation implementing an organic catalyst derived from germylene

A metal complex including at least one metal atom chosen from the metals of Groups 8, 9 and 10 of the Periodic Table of the Elements and one or more ligands, wherein at least one ligand includes a cyclic silylene structure and a Lewis base which donates an electron pair to the silicon atom of the cyclic silylene structure.

Catalysts with a silylene ligand

A subject matter of the present invention is the use as catalyst, in particular in hydrosilylation, of a metal complex including at least one metal atom chosen from the metals of Groups 8, 9 and 10 of the Periodic Table of the Elements and one or more ligands, characterized in that at least one ligand includes a silene structure.

Catalysts having a silene ligand

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.

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

A process for condensation between at least one &#x2261;SiOH unit and at least one &#x2261;SiOR unit is provided. In accordance with the present invention, R=a hydrogen or a C-Chydrocarbon group optionally comprising one or more heteroatoms, and the &#x2261;SiOH and &#x2261;SiOR units belong to at least one identical or different (organo)silicon compound P. The process is conducted in the presence of an effective amount of at least one catalyst C, comprising a carbene. Compositions are also provided.

Method for condensing silyl units using a carbene catalyst

The present invention relates to a process for preparing a compound comprising at least a urethane group &#x2014;HN&#x2014;C(&#x2550;O)&#x2014;O, said process comprising a step (E) in which a compound (I) comprising at least an isocyanate functional group &#x2014;N&#x2550;C&#x2550;O is reacted with an organic compound (II) carrying at least a hydroxyl group &#x2014;OH, said reaction being carried out in a presence of a carbene (III) used as a catalyst.

Synthesis of urethanes and polyurethanes catalysed by carbenes

A method for preparing polyorganosiloxanes (POS) by a ring-opening polymerization and/or linear, non-linear or cyclic POS redistribution in the presence of a nucleophilic carbene. The initial efficiency of the POS conversion is substantially increased at low temperature, resulting in less residual content of initial POS.

Method for preparing PolyOrganoSiloxanes (POS) by ring (S)&#x2014;opening polymerization and/or POS redistribution in the presence of carbene (S) and POS compounds produced by said method

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Toulouse, France

Antoine Baceiredo