Aryl‐Aryl Cross‐Coupling with Hypervalent Iodine Reagents: Aryl Group Transfer Reactions

Abstract

Aryl-aryl cross-coupling are a unique class of CÀ C bond formation reaction in organic chemistry. From last few years, various synthetic methods have been developed for aryl-aryl cross-coupling reaction using hypervalent iodine (III) reagents as an aryl group donor. This review highlights exciting synthetic protocols that have been used for aryl-aryl cross-coupling reactions with hypervalent iodine reagents employing aryl group transfer reaction. The review has categorized the metal-catalyzed and metal free aryl-aryl cross-coupling reactions separately using hypervalent iodine reagents. Also this review provides the mechanistic prospective involves for arylgroup transfer reaction.

Copper-Catalyzed Chemo-, Regio-, and Stereoselective Multicomponent 1,2,3-Trifunctionalization of Internal Alkynes

“…For instance, they could couple with nucleophilic heteroatoms such as oxygen, sulfur, nitrogen, and phosphorus to enable electrophilic arylation reactions even under transition-metal-free conditions. Moreover, they could facilely react with less nucleophilic carbon skeletons of arenes, alkenes, alkynes, ,,,, and allenes for C–C bond forming reactions mostly via palladium and copper catalysis. Although a large number of new transformations involving the π-systems and the diaryliodonium salts have been documented, their reaction patterns were mainly limited to either the Heck-type processes or the 1,2-difunctionalizations of π bonds, ,,, particularly for alkynes.…”

Introduction to hypervalent iodine chemistry. Part 3

“…The use of hypervalent iodine species for the coupling reactions leading to new carbon-carbon bonds was surveyed in two reviews. 47,57 Applications of iodine(III) reagents in the synthesis of heterocycles was summarized in numerous reviews. 15,44,45,49,51,53,56 The HI based methodologies have found wide application in the synthesis of natural products.…”