作者:Fangrui Zhong、Xiaowei Dou、Xiaoyu Han、Weijun Yao、Qiang Zhu、Yuezhong Meng、Yixin Lu
DOI:10.1002/anie.201208285
日期:2013.1.14
Bifunctional phosphines derived from amino acids mediate the asymmetric Michael addition of 3‐substituted oxindoles to activated alkenes (see scheme). Biologically relevant chiral 3,3‐disubstituted oxindoles were thus prepared in high yields and with excellent enantioselectivities from 3‐aryl‐ and 3‐alkyl‐substituted oxindoles and various activated alkenes.
衍生自氨基酸的双功能膦可介导3取代的羟吲哚向活化烯烃的不对称迈克尔加成(参见方案)。因此,可以高产率地制备具有生物相关性的手性3,3-二取代的羟吲哚,并从3-芳基和3-烷基取代的羟吲哚和各种活化的烯烃中获得出色的对映选择性。