Palladium-Catalyzed Tandem Synthesis of 2-Trifluoromethylthio(seleno)-Substituted Benzofused Heterocycles
作者:Mengjia Zhang、Zhiqiang Weng
DOI:10.1021/acs.orglett.9b01922
日期:2019.8.2
The tandem synthesis of 2-trifluoromethylthio(seleno)-substituted benzofurans using palladium-catalyzed conditions is reported. Trifluoromethylthio(seleno)lation of 2-(2,2-dibromovinyl)phenols with (bpy)CuSCF3 or [(bpy)CuSeCF3]2 furnishes several 2-trifluoromethylthio(seleno)lated benzofurans in acceptable to good yield. Mechanistic investigations were performed to elucidate the reaction pathway, which
报道了在钯催化条件下串联合成2-三氟甲硫基(硒代)取代的苯并呋喃的方法。三氟甲硫基(硒)与(联吡啶)CuSCF 2-(2,2-二溴乙烯基)苯酚特征研3或[(联吡啶)CuSeCF 3 ] 2种配料几个2-三氟甲硫基(硒)在可接受的收率良好迟来苯并呋喃。进行了机理研究以阐明反应途径,该反应途径参与了2-溴苯并呋喃物种的形成。该方案的范围进一步扩展至2-三氟甲硫基(硒代)苯并噻吩和吲哚的制备。