Sustainable and scalable one-pot synthesis of diaryliodonium salts

Abstract

Two one-pot routes from iodoarenes to diaryliodonium triflates have been developed in the sustainable solvent ethyl acetate. The first method yields the recently reported aryl(dimethylisoxazolyl)iodonium triflates, circumventing the need for stepwise synthesis of this chemoselective arylating reagent. The second method gives other types of diaryliodonium salts, and the scalability of the protocols was exhibited with two >45 mmol scale-ups with impressively low E-factors.