作者:Zhanhui Yang、Shiyi Yang、Muhammad Sohail Haroone、Wei He、Jiaxi Xu
DOI:10.1016/j.tet.2017.04.057
日期:2017.6
A new strategy for the C(sp2)–H imidation and 1,2-imidofluorination of vinylsulfides has been established through simple treatment with N-fluorobis(benzenesulfonyl)imide, which acts as both oxidant and nitrogen source. For alkyl and electron-rich aryl vinylsulfides, alkyl/arylthioenamines are produced in up to 92% total yields. However, for steric and electron-deficient aryl vinylsulfides, 1,2-imidofluorination
通过用N-氟双(苯磺酰基)酰亚胺作为氧化剂和氮源的简单处理,已经建立了乙烯基硫化物的C(sp 2)-H酰亚胺化和1,2-亚氨基氟化的新策略。对于富含烷基和电子的芳基乙烯基硫化物,可以以高达92%的总收率生产烷基/芳基硫代亚胺。但是,对于空间位阻和电子缺陷的芳基乙烯基硫化物,可以以高达73%的收率制备1,2-亚氨基氟化产物。化学选择性由芳基取代基的空间和电子效应控制。提出将ion离子作为两个反应的关键中间体。