Trifluoromethylation of aromatic alkenes by visible-light-driven photoredox catalysis: Direct conversion of alkenes to 3-trifluoromethyl-1-propenyl and 1,3-bis(trifluoromethyl)-1-propenyl derivatives
作者:Masashi Asano、Ren Tomita、Takashi Koike、Munetaka Akita
DOI:10.1016/j.jfluchem.2015.07.020
日期:2015.11
irradiation has been developed. A Ru photocatalyst, [Ru(bpy)3](PF6)2 (bpy = 2,2′-bipyridine), is useful for the present trifluoromethylation and preferable formation of 3-trifluoromethyl-1-propenyl derivatives is observed. Use of an excess amount of Umemoto's reagent readily induces double trifluoromethylation of electron-rich alkenes, resulting in 1,3-bis(trifluoromethyl)-1-propenyl skeleton.
已经开发了使用梅本试剂作为CF 3源在可见光照射下光氧化还原催化的烯烃的三氟甲基化。Ru光催化剂[Ru(bpy)3 ](PF 6)2(bpy = 2,2'-联吡啶)可用于本发明的三氟甲基化,并且观察到优选形成3-三氟甲基-1-丙烯基衍生物。使用过量的梅本试剂很容易引起富电子烯烃的双三氟甲基化,从而形成1,3-双(三氟甲基)-1-丙烯基骨架。