How is (2,4-Dibromophenyl)hydrazinium chloride (CAS: 149998-17-4) typically synthesized?

(2,4-Dibromophenyl)hydrazinium chloride can be synthesized by reacting 2,4-dibromophenylhydrazine with hydrochloric acid. The reaction is typically conducted in anhydrous conditions to improve yield. Commonly, the reaction mixture is heated to facilitate the protonation of the hydrazine moiety, leading to the formation of the chloride salt. This process requires careful monitoring to ensure high selectivity and yield.