Synthesis and Catalytic Activities of (<i>S</i>)-1-formylpyrrolidine-2-carboxylic Acid Derivatives for the Enantioselective Reductions of Both a Ketone and a Ketimine
作者:Zhenfei Chen、Anjiang Zhang、Lixue Zhang、Jing Zhang、Xinxiang Lei
DOI:10.3184/030823408x318433
日期:2008.5
as chiral organocatalysts in the asymmetric reduction of both ketone 2 and ketimine 3. These organic activators afforded good to moderate enantioselectivities in the asymmetric reductions of both the ketone and the ketimine. Among them, organic activator 6h displayed the best efficiency, affording a 84% yield and 41% ee in the reduction of the ketone and 75% yield and 52% ee in the reduction of the ketimine
一系列 (S)-1-甲酰基吡咯烷-2-羧酸衍生物 (6a-t) 已被合成并作为手性有机催化剂用于酮 2 和酮亚胺 3 的不对称还原。这些有机活化剂提供了良好到中等的对映选择性酮和酮亚胺的不对称还原。其中,有机活化剂6h显示出最佳的效率,在酮的还原中提供了84%的收率和41%的ee,在酮亚胺的还原中提供了75%的收率和52%的ee。