作者:Jun Li、Long Zheng、Hao Chen、Lijia Wang、Xiu-Li Sun、Jun Zhu、Yong Tang
DOI:10.1007/s11426-017-9200-9
日期:2018.5
A highly efficient asymmetric cyclopropanation of trisubstituted olefins with methyl diazoacetate has been developed in terms of an elaborate modified chiral bisoxazoline/copper complex as a catalyst. A broad scope of substrates is compatible with this catalyst system, including various trisubstituted olefins bearing different aryl-, fused aryl- and alkyl-substituents, providing an easy access to optically
根据精心修饰的手性双恶唑啉/铜配合物作为催化剂,已开发出三重烯烃与重氮乙酸甲酯的高效不对称环丙烷化反应。各种各样的底物都可与该催化剂体系兼容,包括各种带有不同芳基,稠合芳基和烷基取代基的三取代烯烃,可轻松获得光学活性的1,1-二甲基环丙烷,且产率高,且具有非对映异构体和非对映异构体。对映选择性。