In recent years the chemistry of cyclic iodonium salts has experienced ever‐growing development. The advantages of using cyclic iodonium salts over acyclic iodonium salts are that the reactions between cyclic iodonium salts and various nucleophiles ...
In recent years the chemistry of cyclic iodonium salts has experienced ever‐growing development. The advantages of using cyclic iodonium salts over acyclic iodonium salts are that the reactions between cyclic iodonium salts and various nucleophiles lead, under suitable reaction conditions, to dual arylations in a one‐pot manner and to the formation of new heterocycles. Variously functionalized thiophenes, carbazoles, fluorenes, phenanthrenes and triazolophenanthridines have been synthesized by utilizing cyclic diaryliodonium salts. Various new ladder‐type π‐conjugated systems have also been synthesized by employing cyclic iodonium salts. In this microreview, the recent advancements in the synthesis and application of cyclic diaryliodonium salts are discussed in a systematic and concise manner.
Diaryliodonium salts (Ar2I+X–) are an important class of hypervalent organoiodine(III) compounds. The chemistry of their cyclic forms has recently experienced notable development, by treatment with nucleophiles leading to single‐step, one‐pot dual arylation and bifunctionalization. Variously functionalized heterocycles, carbocycles and ladder‐type π‐conjugated systems have also been synthesized.