Construction of highly enantioenriched spirocyclopentaneoxindoles containing four consecutive stereocenters via thiourea-catalyzed asymmetric Michael–Henry cascade reactions
作者:Yonglei Du、Jian Li、Kerong Chen、Chenglin Wu、Yu Zhou、Hong Liu
DOI:10.3762/bjoc.13.131
日期:——
thiourea-catalyzed asymmetric synthesis of highly enantioenriched spirocyclopentaneoxindoles containing chiral amide functional groups using simple 3-substituted oxindoles and nitrovinylacetamide as starting materials was achieved successfully. This protocol features operational simplicity, high atom economy, and high catalytic asymmetry, thus representing a versatile approach to the synthesis of highly enantioenriched
以简单的3-取代的羟吲哚和硝基乙烯基乙酰胺为起始原料,成功实现了硫脲催化不对称合成高度手性富集的含有手性酰胺官能团的螺环戊烷氧吲哚。该方案具有操作简便,原子经济性高和催化不对称性高的特点,因此代表了一种通用的方法,用于合成高度对映体富集的螺环戊烷并吲哚。