Enantioselective oxazaborolidine catalysts

Details Enantioselective oxazaborolidine catalysts Enantioselective oxazaborolidine catalysts

C - Chemistry, Metallurgy

07

F

C07F 5/04 (2006.01) B01J 31/02 (2006.01) B01J 31/14 (2006.01) C07C 29/143 (2006.01) C07C 31/125 (2006.01) C07C 33/22 (2006.01) C07C 33/46 (2006.01) C07C 35/36 (2006.01) C07C 213/00 (2006.01) C07C 213/08 (2006.01) C07C 215/28 (2006.01) C07D 213/30 (2006.01) C07D 311/22 (2006.01) C07F 5/02 (2006.01)

Patent

CA 2161969

The enantioselective borane reduction of prochiral ketones to optically pure alcohols is effectively achieved by performing the reduction in the presence of catalytic amounts of the new and valuable oxazaborolidine compounds of formulae (I) and (II). The compounds of formulae (I) and (II) may be isolated and purified prior to use in the reduction reactions or the compounds of formulae (I) and (II) may be generated in situ.

La réduction énantiosélective au borane de cétones prochirales en alcools optiquement purs est effectivement réalisée par la réduction en présence de quantités catalytique des nouveaux composés d'oxazaborolidine de valeur de formules (I) et (II). Les composés de formules (I) et (II) peuvent être isolés et purifiés avant d'être utilisés dans les réactions de réduction ou les composés de formule (I) et (II) peuvent être générés in situ.

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