Metal-free oxidative coupling reactions via ω-iodonium intermediates: The efficient synthesis of bithiophenes using hypervalent iodine reagents

摘要

The direct oxidative biaryl coupling reaction is an attractive tool for environmentally benign green chemistry. A novel direct method for the synthesis of bithiophene using a hypervalent iodine reagent has been developed. The reaction mechanism has also been investigated, casting light on the reaction intermediate and revealing the reactivity with iodonium salts.