Visible Light‐Promoted Mono‐Bromination of Aniline Derivatives and Nitrogen‐Containing Heterocyclic Compounds via Electron Donor−Acceptor Complex

Abstract We present a successful development of a photo‐induced mono‐bromination method for anilines, which eliminates the requirement for photocatalysts and excess bromine sources. Experimental investigations, complemented by computational analyses, establish that this method operates via the formation of an electron donor‐acceptor (EDA) complex. This innovative approach enables the synthesis of highly regioselective mono‐brominated products across a diverse range of substrates, all achieved under mild reaction conditions.