Copper-Catalyzed Sequential Azomethine Imine-Alkyne Cycloaddition and Umpolung Thiolation Reactions
作者:Min Zhang、Feifei Wu、Huanhong Wang、Junshi Wu、Wanzhi Chen
DOI:10.1002/adsc.201700387
日期:2017.8.17
Copper‐catalyzed sequential 1,3‐dipolar cycloadditions of azomethine imines and alkynes and electrophilic thiolations are described. The C−S, C−N, and C−C bonds were simultaneously formed in one pot, leading to N,N‐bicyclic pyrazolidinones in good to excellent yields. The process is proposed to proceed via reaction of a cuprate pyrazolidinonate intermediate and benzenesulfonothioate.
描述了铜催化的偶氮甲亚胺和炔烃的连续1,3-偶极环加成反应以及亲电硫醇化反应。在一个罐中同时形成CS , CN和CC键,从而导致N,N-双环吡唑啉酮类化合物的收率为好至极好。建议该方法通过吡咯烷二酸铜盐中间体和苯磺酸硫代磺酸盐的反应来进行。