Cobalt‐Catalyzed Diastereo‐ and Enantioselective Hydroalkenylation of Cyclopropenes with Alkenylboronic Acids
作者:Haiyan Zhang、Wei Huang、Tongtong Wang、Fanke Meng
DOI:10.1002/anie.201904994
日期:2019.8.5
Catalytic diastereo‐ and enantioselective hydroalkenylation of 3,3‐disubstituted cyclopropenes with readily accessible alkenylboronic acids, promoted by a chiral phosphine/Co complex, is presented. Such a process constitutes the unprecedented and direct introduction of a wide range of alkenyl groups onto the cyclopropane motif to afford multisubstituted cyclopropanes in up to 95 % yield with greater
介绍了手性膦/钴配合物促进的3,3-二取代环丙烯与易于获得的烯基硼酸的催化非对映和对映选择性的加氢烯基化反应。这种方法构成了前所未有的直接方法,将各种各样的烯基直接引入到环丙烷基序上,以高达95%的dr和99:1 er的产率提供高达95%的多取代的环丙烷,从而使对映体富集的环丙烷的产品功能化,否则很难访问。