Highly Enantioselective Borane Reduction of Prochiral Ketones Catalyzed by <i>C</i><sub>3</sub>-Symmetric Tripodal β-Hydroxy Amides
作者:Da-Ming Du、Tao Fang、Jiaxi Xu
DOI:10.1055/s-2006-941591
日期:2006.6
The asymmetric borane reduction of prochiral ketones with a series of easily constructed chiral C-3-symmetric tripodal tris(beta-hydroxyamide) ligands was investigated. The borane complex of chiral ligand 1,1',1"-(1,3,5-benzenetricarbonyl)-tris[(2S)-alpha,alpha-diphenl-2-pyrrolidinemethanol] (1h) was found to be an efficient catalyst in asymmetric borane reduction of prochiral ketones and excellent
研究了具有一系列易于构建的手性 C-3 对称三足三(β-羟基酰胺)配体的前手性酮的不对称硼烷还原。手性配体 1,1',1"-(1,3,5-benzotricarbonyl)-tris[(2S)-alpha,alpha-diphenl-2-pyrrolidinemethanol] (1h) 的硼烷配合物被发现是一种有效的催化剂在前手性酮的不对称硼烷还原中,缺电子和富电子前手性酮(高达 97% ee)均获得了优异的对映选择性。