Catalytic Enantioselective Desymmetrization of Cyclobutane-1,3-diones by Carbonyl-Amine Condensation
作者:Kai-Ge Wen、Chao Liu、Dong-Hui Wei、Yan-Fei Niu、Yi-Yuan Peng、Xing-Ping Zeng
DOI:10.1021/acs.orglett.1c00067
日期:2021.2.5
A chiral phosphoric acid-catalyzed enantioselective condensation of 2,2-disubstituted cyclobutane-1,3-diones with a primary amine is described. This reaction offered a mild and efficient protocol for constructing quaternary carbon-containing cyclobutanes in good to high yields and enantioselectivities. This reaction is the first catalytic desymmetrizing carbonyl-amine condensation reaction and also
描述了2,2-二取代的环丁烷-1,3-二酮与伯胺的手性磷酸催化的对映选择性缩合。该反应提供了温和而有效的方案,用于以高至高产率和对映选择性构建含季碳的环丁烷。该反应是第一个催化脱对称的羰基-胺缩合反应,也代表了前手性环丁烷-1,3-二酮的第一个催化脱对称的反应。