A Simple Primary Amine Thiourea Catalyzed Highly Enantioselective Conjugate Addition of α,α-Disubstituted Aldehydes to Maleimides
作者:Fei Xue、Lu Liu、Shilei Zhang、Wenhu Duan、Wei Wang
DOI:10.1002/chem.201001207
日期:2010.7.19
point: A simple primary amine thiourea catalyzed highly enantioselective conjugate addition of α,α‐disubstituted aldehydes to maleimides has been developed. The biologically useful chiral disubstituted α‐branched succinimides are attained with the generation of two contiguous quaternary and/or tertiary stereogenic centers in one step with excellent enantioselectivities and in high yields under mild
分支点:已开发出一种简单的伯胺硫脲催化的α,α-二取代醛向马来酰亚胺的高对映选择性共轭加成反应。具有生物学上有用的手性二取代的α-支化琥珀酰亚胺是通过在温和的反应条件下,以极好的对映选择性和高收率一步生成两个连续的四级和/或三级立体异构中心而获得的(参见方案)。