Ruthenium-diphosphine complexes and their use as catalysts

Details Ruthenium-diphosphine complexes and their use as catalysts Ruthenium-diphosphine complexes and their use as catalysts

C - Chemistry, Metallurgy

07

F

C07F 15/00 (2006.01)

Patent

CA 2414049

Novel complexes, suitable in particular for use as catalysts in the asymmetric hydrogenation of ketones, are of formula (1) or a diastereoisomer thereof, wherein each Ar is an aromatic or heteroaromatic group of up to 20 atoms; X is halide or carboxylate; and R1, R2, R3, R4 are independently hydrogen, aryl or alkyl, optionally linked or part of a ring.

L'invention concerne de nouveaux complexes s'utilisant en particulier comme catalyseurs dans l'hydrogénation asymétrique de cétones ou un de leurs diastéréoisomères, qui sont de formule (1), dans laquelle chaque Ar désigne un groupe aromatique ou hétéroaromatique de jusqu'à 20 atomes ; X désigne halogénure ou carboxylate ; et R?1¿,R?2¿,R?3¿,R?4¿ désignent indépendamment hydrogène, aryle ou alkyle, éventuellement liés ou faisant partie d'un composé cyclique.

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