A light-induced and copper-catalyzed trifluoromethoxylation reaction of aryl iodonium tetrafluoroborates was reported. This scalable protocol demonstrates broad functional group compatibility and offers a practical and efficient strategy for the introduction of the trifluoromethoxy group into aromatic systems. Furthermore, mechanistic studies suggested that aryl radicals are generated via visible-light catalysis during the reaction.
Li et al. (Thu,) studied this question.