作者:Haigen Shen、Hawen Xiao、Lin Zhu、Chaozhong Li
DOI:10.1055/s-0039-1690187
日期:2020.1
The copper-catalyzed radical bis(trifluoromethylation) of alkynes and 1,3-enynes is described. With Cu(CH3CN)4BF4 as the catalyst, the reaction of arylalkynes with Togni reagent II and (bpy)Zn(CF3)2at room temperature affords the corresponding 1,2-bis(trifluoromethylated) alkenes in good yields with excellent E-stereoselectivity. Under similar conditions, the reaction of 1,3-enynes provides the corresponding
描述了炔烃和 1,3-烯炔的铜催化自由基双(三氟甲基化)。以 Cu(CH3CN)4BF4 作为催化剂,芳炔与 Togni 试剂 II 和 (bpy)Zn(CF3)2 在室温下反应,以良好的收率和优异的 E-立体选择性得到相应的 1,2-双(三氟甲基化)烯烃。在类似条件下,1,3-烯炔的反应仅以令人满意的产率提供相应的 1,4-双(三氟甲基化)丙二烯。该协议展示了广泛的底物范围和出色的功能组兼容性。