Direct Sulfide-Catalyzed Enantioselective Cyclopropanations of Electron-Deficient Dienes and Bromides
作者:Qing-Zhu Li、Xiang Zhang、Rong Zeng、Qing-Song Dai、Yue Liu、Xu-Dong Shen、Hai-Jun Leng、Kai-Chuan Yang、Jun-Long Li
DOI:10.1021/acs.orglett.8b01537
日期:2018.6.15
A catalytic highly regioselective, diastereoselective, and enantioselective cyclopropanation of electron-deficient dienes and bromides via direct sulfide organocatalysis is reported. A variety of vinylcyclopropanes featuring a quaternary chiral center were synthesized in up to 99% yield and up to 98:2 enantiomeric ratio (er). These products could be facilely transformed to various interesting molecules
报道了通过直接硫化物有机催化对缺电子的二烯和溴化物进行高度区域选择性,非对映选择性和对映选择性的环丙烷化反应。以高达99%的收率和高达98:2的对映体比率(er)合成了多种具有季手性中心的乙烯基环丙烷。这些产物可以容易地转化为具有极大结构多样性的各种有趣的分子。