KI-catalyzed aminobromination of olefins with TsNH2–NBS combination

Abstract

An efficient KI-catalyzed aminobromination of olefins has been developed with good to excellent yields and high regio- and stereoselectivities under transition metal-free conditions. A series of olefins, including α,β-unsaturated carbonyl compounds and simple olefins, was studied. The reaction was performed in CH₂Cl₂ using KI as the catalyst and TsNH₂ and NBS as the nitrogen and bromine sources.