Copper-Mediated Photoinduced Trifluoromethylation of Arylsulfonium Salts with Yagupolskii–Umemoto Reagent

] intermediate from the Yagupolskii-Umemoto reagent and its subsequent reduction and cross-coupling of an arylsulfonium salt. This transformation represents the first cross-coupling of two electrophilic sulfonium-based reagents and enables the late-stage functionalization of structurally diversified drug molecules.