作者:Bruce H. Lipshutz、Naoki Tanaka、Benjamin R. Taft、Ching-Tien Lee
DOI:10.1021/ol0529593
日期:2006.5.1
[reaction: see text] CuH-catalyzed asymmetric conjugate reduction of beta-silyl-alpha,beta-unsaturated esters has been developed. Using PMHS as a stoichiometric source of hydride and in situ generated CuH ligated by Solvias' JOSIPHOS analogue PPF-P(t-Bu)(2) leads to highly enantioselective 1,4-reductions.
[反应:见正文]已经开发出CuH催化的β-甲硅烷基-α,β-不饱和酯的不对称共轭还原。使用PMHS作为氢化物的化学计量来源,并通过Solvias的JOSIPHOS类似物PPF-P(t-Bu)(2)连接的原位生成的CuH导致高度对映选择性1,4还原。