Regioselective and Enantioselective Domino Aldol-Oxa-Michael Reactions to Construct Quaternary (Chroman) Stereocenters
作者:Kegang Liu、Xiaohua Jiang
DOI:10.1002/ejoc.201501065
日期:2015.9
An asymmetric domino aldol–oxa-Michael reaction of salicylaldehydes and β,β-disubstituted α,β-unsaturated aldehydes has been developed by using dienamine-mediated catalysis. The developed strategy leading to the stereoselective and regioselective formation of novel chroman derivatives with quaternary (chroman) stereocenters is presented. Particularly, salicylaldehydes with variously substitution patterns
通过使用二烯胺介导的催化,开发了水杨醛和 β,β-二取代 α,β-不饱和醛的不对称多米诺羟醛-氧杂-迈克尔反应。介绍了导致具有四元(色满)立体中心的新型色满衍生物的立体选择性和区域选择性形成的已开发策略。特别是,具有不同取代模式的水杨醛主导了具有高分子复杂性和骨架多样性的色满衍生物的有效构建,具有优异的非对映选择性和对映选择性。