Cyanuric bromide is a heterocyclic compound with formula C3N3Br3. It contains a six-membered ring of alternating nitrogen and carbon atoms, with a bromine atom attached to each carbon. It is formed by the spontaneous trimerisation of cyanogen bromide.
Cyanuric bromide can be used to synthesize substituted triazines.[1] For example it reacts with anilines to form derivatives of melamine.[2] With ammonia, melamine is produced. Primary or secondary amines react. Cyanuric trihydrazide is produced in the reaction with hydrazine. When heated with urea at 140 °C, ammelide is formed.
Cyanuric bromide reacts with water, particularly in alkaline conditions to cyanuric acid[3] and hydrogen bromide.
Cyanuric bromide can add bromine to other compounds and when it is heated with acetic acid, acetyl bromide is produced.
Cyanuric bromide can form in a reaction with potassium ferrocyanide with bromine at 200 °C. The trimerization reaction of cyanogen bromide (BrCN) is catalyzed by aluminium trichloride or hydrogen bromide.