Catalytic hydrogeneration of carbon-heteroatom double bonds

Details Catalytic hydrogeneration of carbon-heteroatom double bonds Catalytic hydrogeneration of carbon-heteroatom double bonds

C - Chemistry, Metallurgy

07

B

C07B 53/00 (2006.01) C07B 41/02 (2006.01) C07B 43/04 (2006.01) C07D 333/16 (2006.01)

Patent

CA 2507908

Process for catalytically hydrogenating carbon-heteroatom double bonds, in particular for asymmetrically catalytically hydrogenating simple ketones, which includes the step of reacting the substrate with hydrogen in the presence of a hydrogenation catalyst and of a base, characterized in that the hydrogenation catalyst is a 5-coordinate ruthenium complex which in each case has a monophosphine ligand and a bidentate P-N ligand.

La présente invention se rapporte à un procédé d'hydrogénation par voie catalytique de doubles liaisons carbone-hétéroatome, permettant en particulier l'hydrogénation par voie catalytique asymétrique de simples cétones. Ce procédé comprend une étape consistant à faire réagir le substrat avec de l'hydrogène en présence d'un catalyseur d'hydrogénation et d'une base, et il se caractérise en ce que le catalyseur d'hydrogénation est un complexe de ruthénium à 5 liaisons de coordination qui, dans chaque cas, possède un ligand monophosphine et un ligand P-N bidenté.

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