Figure 1: Catalytic oxidative C–H functionalization.

(a) Minisci reaction: the example of the C–H functionalization with stoichiometric external oxidant. (b) C–H trifluoromethylation with Umemoto reagent: the example of C–H functionalization with pre-synthesized oxidazing reagent. (c) Photo-driven C–H trifluoromethylation without the reliance on external oxidant (this work).