作者:Olga Lifchits、Corinna M. Reisinger、Benjamin List
DOI:10.1021/ja1037935
日期:2010.8.4
An asymmetric catalytic epoxidation of alpha-branched, alpha,beta-unsaturated aldehydes is presented. A highly synergistic combination of a primary cinchona-based amine and a chiral phosphoric acid was found to promote the reaction with excellent enantiocontrol for alpha-monosubstituted and alpha,beta-disubstituted enals.
介绍了 α-支链、α、β-不饱和醛的不对称催化环氧化。发现基于伯金鸡纳的胺和手性磷酸的高度协同组合可促进反应,对 α-单取代和 α,β-二取代的烯醛具有优异的对映控制。