Site-Selective Functionalization of Pyridinium Derivatives via Visible-Light-Driven Photocatalysis with Quinolinone
作者:Inwon Kim、Gyumin Kang、Kangjae Lee、Bohyun Park、Dahye Kang、Hoimin Jung、Yu-Tao He、Mu-Hyun Baik、Sungwoo Hong
DOI:10.1021/jacs.9b02013
日期:2019.6.12
photocatalyst, we developed a catalytic system driven by visible light that forms phosphinoyl and carbamoyl radicals, which react with various heteroarenium derivatives under mild, transition-metal-free conditions. This straightforward and environmentally friendly synthetic method represents a new approach to site-divergent pyridine functionalization that offers considerable advantages in both simplicity and
The photocatalyst-free C–H γ,γ,γ-trifluoroalkylation of quinolines under visible light irradiation is reported. By the combination of readily available alkenes and Umemoto’s reagent II, a variety of γ,γ,γ-trifluoroalkyl groups were installed into quinolines via chemoselective sequential radical processes. This transformation provides rapid access to a variety of quinoline derivatives with scarcely