New Synthetic Strategy for High-Enantiopurity N-Protected α-Amino Ketones and their Derivatives by Asymmetric Hydrogenation
作者:Tian Sun、Guohua Hou、Miaofeng Ma、Xumu Zhang
DOI:10.1002/adsc.201000680
日期:2011.2.11
Asymmetrichydrogenation of α-dehydroaminoketones catalyzed by a rhodium-chiral phosphorus ligand complex (up to 99% ee, 1000 TON), represents an efficient approach to chiralα-aminoketones. The reduction of α-aminoketones catalyzed by palladium on carbon (Pd/C) leads to amphetamine precursors with quantitative yield and no significant enantioselectivity loss.