A highly efficient asymmetric Michael addition of α,α-disubstituted aldehydes to maleimides catalyzed by primary amine thiourea salt
作者:Feng Yu、Zhichao Jin、Huicai Huang、Tingting Ye、Xinmiao Liang、Jinxing Ye
DOI:10.1039/c0ob00154f
日期:——
The first highly efficient Michael addition of challenging α,α-disubstituted aldehydes to maleimides catalyzed by a simple bifunctional primary amine thiourea catalyst/benzoic acid system has been successfully developed to generate quaternary carbon centers in high yields (up to 99%) with excellent enantioselectivities (91–99%).
简单的双官能伯胺硫脲催化剂/催化的将高挑战性的α,α-二取代的醛首次高效加成到马来酰亚胺上/苯甲酸 系统已成功开发以生成四元数 碳 中心高收率(高达99%)和出色的对映选择性(91–99%)。