Synthesis of Chiral Tetrahydrofurans via Catalytic Asymmetric [3 + 2] Cycloaddition of Heterosubstituted Alkenes with Oxiranes
作者:Xiao Yuan、Lili Lin、Weiliang Chen、Wangbin Wu、Xiaohua Liu、Xiaoming Feng
DOI:10.1021/acs.joc.5b02524
日期:2016.2.5
An efficient diastereo- and enantioselective [3 + 2] cycloaddition of heterosubstituted alkenes with oxiranes via selective C–C bond cleavage of epoxides has been developed. The reaction was catalyzed by a chiral N,N′-dioxide/Ni(II) catalyst, and a variety of chiral highly substituted tetrahydrofurans were obtained in up to 99% yield, 92/8 dr, and 99% ee.
通过环氧化物的选择性C-C键裂解,有效开发了杂取代烯烃与环氧乙烷的非对映和对映选择性[3 + 2]环加成反应。该反应由手性N,N'-二氧化物/ Ni(II)催化剂催化,获得了多种手性高度取代的四氢呋喃,收率高达99%,92/8 dr和99%ee。