Vicinal Difunctionalization of Alkenes: Chlorotrifluoromethylation with CF_3SO_2Cl by Photoredox Catalysis

摘要

Photoredox-catalyzed vicinal chlorotrifluoromethylation of alkene is described. In the presence of Ru(Phen)_3Cl_2, CF_3SO_2Cl was used as a source for the CF_3 radical and chloride ion under visible light irradiation. Various terminal and internal alkenes were transformed to their vicinal chlorotrifluoromethylated derivatives. Biologically active compounds were applied under the condition to obtain desired products, suggesting that the method could be feasible for late-stage modification in drug discovery.