Abstract Oxidative bromination of aniline and its derivatives containing various substituents (CH 3, Cl, NO 2, COOH) in ortho, meta, and para positions with a brominating mixture of NaBr (KBr) and 20–22% hydrogen peroxide in 6–8% hydrochloric acid at the molar ratio aniline: NaBr (KBr): H 2 O 2: HCl= 1: 3.5: 3.2: 4.5 is described.