New methods for the catalytic reduction of organic substrates

Details New methods for the catalytic reduction of organic substrates New methods for the catalytic reduction of organic substrates

C - Chemistry, Metallurgy

07

C

C07C 29/147 (2006.01) C07B 41/02 (2006.01) C07B 43/04 (2006.01) C07C 29/143 (2006.01) C07C 31/125 (2006.01) C07C 31/36 (2006.01) C07C 33/00 (2006.01) C07C 209/52 (2006.01) C07C 211/26 (2006.01) C07D 207/06 (2006.01) C07D 207/323 (2006.01) C07D 265/30 (2006.01) C07D 295/023 (2006.01) C07D 295/027 (2006.01) C07D 307/52 (2006.01) C07D 413/06 (2006.01)

Patent

CA 2096747

2096747 9209545 PCTABS00013 A process is provided whereby organic carbonyl substrates, including esters, ketones and amides, are reduced in a reaction with a silane reducing reagent and a catalyst. According to the invention esters and ketones can be reduced to alcohols while amides can be reduced to amines, enamines or a mixture thereof. Methods are also provided for catalytically reducing imines to yield amines. Moreover, there is provided a process for the catalytic asymmetric reduction of imines, oximes, hydrazones, and the like, using enantiomerically enriched catalysts, or catalysts in the presence of enantiomerically enriched additives, to provide chiral amine reaction products which are enriched in one enantiomer. Furthermore, there is provided a process for the catalytic asymmetric reduction of ketones, using catalysts in the presence of enantiomerically enriched additives to provide chiral alcohol reaction products which are enriched in one enantiomer.

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