Visible-Light-Promoted Redox-Neutral Cyclopropanation Reactions of α-Substituted Vinylphosphonates and Other Michael Acceptors with Chloromethyl Silicate as Methylene Transfer Reagent
作者:Ting Guo、Li Zhang、Xiaobo Liu、Yewen Fang、Xiaoping Jin、Yi Yang、Yan Li、Bin Chen、Minghui Ouyang
DOI:10.1002/adsc.201800761
日期:2018.12.3
with chloromethyl silicate as a methylene transfer reagent has been accomplished via visible‐light‐mediated redox‐neutral catalysis. This method features broad functional group tolerance and mild conditions. In addition to α‐substituted vinylphosphonates, a range of Michael acceptors including α,β‐unsaturated acrylate, ketone, amide and sulfone are suitable substrates for this photocatalytic cyclopropanation
通过可见光介导的氧化还原中性催化,完成了以氯甲基硅酸盐作为亚甲基转移试剂的烯烃环丙烷化反应。该方法具有广泛的官能团耐受性和温和条件。除α-取代的乙烯基膦酸酯外,包括此化合物的一系列迈克尔受体(包括α,β-不饱和丙烯酸酯,酮,酰胺和砜)都是适用于这种光催化环丙烷化的底物。还介绍了该方案在雌酮衍生物的环丙烷化中的应用。