Enantioselective Radical Ring-Opening Cyanation of Oxime Esters by Dual Photoredox and Copper Catalysis
作者:Jun Chen、Peng-Zi Wang、Bin Lu、Dong Liang、Xiao-Ye Yu、Wen-Jing Xiao、Jia-Rong Chen
DOI:10.1021/acs.orglett.9b03970
日期:2019.12.6
Catalytic enantioselective chemical reactions involving highly reactive radical species remain largely unexplored. We report herein for the first time a novel enantioselective radical ring-opening cyanation of redox-active oxime esters by dual photoreodox and copper catalysis. This mild protocol shows good functional group tolerance and broad substrate scope, producing a wide range of optically active
涉及高反应性自由基种类的催化对映选择性化学反应在很大程度上仍未开发。我们在此首次报道了通过双重光致氧化和铜催化的氧化还原活性肟酯的新型对映选择性自由基开环氰化反应。这种温和的方案显示出良好的官能团耐受性和广泛的底物范围,可生产出高收率和出色的对映选择性的多种旋光性烷基二腈,这是传统上难以获得的。