Reduction of carbonyl compounds by a silane in the presence of a zinc catalyst
AssigneeFirmenich SA
InventorHubert Mimoun
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Abstract
A reductive system including a silane, preferably PMHS, and an active zinc compound, which is monomeric and not a hydride, wherein a reduction of a carbonyl substrate to a corresponding alcohol is achievable.
Claims10
A catalyst system capable of effectuating a reduction of a carbonyl substrate by a silane agent, the catalyst system consisting essentially of:
- an oligo- or polymeric precursor compound of zinc, or a dialkylzinc or a diarylzinc compound;
- and
- a complexing agent.
A catalyst consisting essentially of a zinc compound, wherein the zinc compound is monomeric, not a hydride, and is the reaction product of an oligo- or polymeric precursor compound of zinc, or a dialkylzinc or diarylzinc compound, and a complexing agent.
A monomeric carboxylate of zinc, with the proviso that a complex [Zn(O2CCH3)2(pyridine)2] is excluded.
Dependencies are inferred from the claim text.