In recent years, diaryliodonium salts have been extensively exploited as green,
efficient electrophilic arylation reagents in a large range of organic synthesis. These arylating
reagents exhibit relatively high reactivity and good selectivity in many transformations. In
this review, the synthetic methods towards diaryliodonium salts are described briefly, and the
research progress in arylation reactions by using diaryliodoniums in C-C and carbonheteroatom
bond formation, especially in enantioselective C-C bond formation and cascade
reactions, in recent ten years is summarized and discussed in detail.