Arylations Promoted by Hypervalent Iodine Reagents

Abstract This chapter describes the methodology for metal‐free and metal‐catalyzed arylations with hypervalent iodine reagents. Most commonly, diaryliodonium salts (diaryl‐λ 3 ‐iodanes) are utilized as electrophilic arylating agents, and such arylations are discussed in detail, including chemoselectivity trends with unsymmetric iodonium salts. Arylations with other iodine(III) reagents are also described, and have been successfully utilized especially in metal‐free biaryl synthesis. The field of hypervalent iodine‐mediated arylations is quickly expanding, and the chapter is focused on the recent developments with brief historic backgrounds to each arylation type.