Rhodium-Catalyzed anti and syn Enantio- and Diastereoselective Transfer Hydrogenation of α-Amino β-Keto Ester Hydrochlorides through Dynamic Kinetic Resolution

In memory of Professor Jean Normant with profound respect

Abstract

A mild catalytic asymmetric transfer hydrogenation of a series of α-amino β-keto ester hydrochlorides catalyzed by a rhodium(III) complex is reported. The use of the formic acid/triethylamine system as the hydrogen donor source provided the corresponding anti and syn amino alcohols with complete conversions, fair diastereoselectivities (up to 97:3 dr), and high enantioselectivities (ee up to >99%).

Key words

rhodium - asymmetric catalysis - transfer hydrogenation - amino alcohols - diastereoselectivity - enantioselectivity

• References


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