A Short-Cut Synthesis of Diaryliodonium Bromides Followed by Oxidative Anion Metatheses

All articles of this category This paper reports a one-pot synthesis of the title bromides (in 20-88% crude yields) from iodoarenes oxidized with the CrO 3 /AcOH/Ac 2 O/H 2 SO 4 liquid mixture, then coupled in situ with arenes and, finally, precipitated out with a KBr solution. Similarly, diaryliodonium perchlorates and iodides are obtained in 40-89% crude yields. Oxidative anion metatheses in the crude title bromides produce the respective pure diaryliodonium tetrafluoroborates, tosylates, trifluoroacetates, hydrosulfates, nitrates, and chlorides in 57-80% yields. These new preparative procedures are easier and shorter than many earlier methods. One-pot synthesis of diaryliodonium bromides from iodoarenes and arenes followed by oxidative anion metatheses.