<scp>Metal‐Free</scp> Electrochemical Trifluoromethylation of <scp>Imidazole‐Fused</scp> Heterocycles with Trifluoromethyl Thianthrenium Triflate
作者:Chang Ge、Lipeng Qiao、Yuyang Zhang、Kai Sun、Jiangzhen An、Mei Peng、Xiaolan Chen、Lingbo Qu、Bing Yu
DOI:10.1002/cjoc.202400089
日期:——
including imidazo[1,2-a]pyridines and benzo[d]imidazo[2,1-b]thiazoles have been successfully trifluoromethylated using this technique, exhibiting excellent compatibility with various functional groups and a broad substrate scope. Moreover, the method's applicability for one-pot sequential reactions enables the reduction of waste and resource consumption by eliminating the need for intermediate purification
建立了一种新颖且环保的三氟甲基噻烯三氟甲磺酸盐(TT–CF 3 + OTf − )电化学活化方法,用于咪唑稠合杂芳族化合物的三氟甲基化。该方法直接电解TT–CF 3 + OTf − ,无需外部氧化剂或催化剂,符合绿色化学原理。使用该技术已成功对多种咪唑稠合杂芳族化合物(包括咪唑并[1,2-a]吡啶和苯并[d]咪唑并[2,1-b]噻唑)进行三氟甲基化,表现出与各种官能团的优异相容性和底物范围广泛。此外,该方法适用于一锅连续反应,无需中间纯化步骤,从而减少废物和资源消耗。