Atom-Economical Applications of Diaryliodonium Salts

Diaryliodonium salt, as a stable and easily prepared reagent, has become one of the most efficient arylation reagents in organic synthesis. In traditional methods, this reagent is generally applied as a single arylation source and the regenerated aryl iodide is a waste of resources. In the past five years, transition-metal-catalyzed utilization of both aryl groups in diaryliodonium salts has been well demonstrated. The purpose of the present review is to focus on various atom-economical applications of diaryliodonium salt methodologies that have been reported recently for the synthesis of functionalized molecules. The presentation is organized according to the structures of the diaryliodonium salts and the reaction components.