Organocatalytic Asymmetric Sulfa-Michael/Michael Addition Reactions: A Strategy for the Synthesis of Highly Substituted Chromans with a Quaternary Stereocenter
作者:Xu-Fan Wang、Qiu-Lin Hua、Ying Cheng、Xiao-Lei An、Qing-Qing Yang、Jia-Rong Chen、Wen-Jing Xiao
DOI:10.1002/anie.201004534
日期:2010.11.2
Simply complex: Diverse and structurally complex chroman derivatives with a quaternary stereocenter have been obtained through the titled reaction of thiols with nitroolefin enoates using the bifunctional catalyst 1. The reaction features simple experimental procedures, high yield, enantiomeric excess, and excellent diastereoselectivity.
简单复杂:使用双功能催化剂1,通过巯基与硝基烯烃烯酸酯的标题反应,获得了具有四级立体中心的多样且结构复杂的苯并二氢吡喃衍生物。该反应具有简单的实验步骤,高收率,对映体过量和优异的非对映选择性。