Ammonia → HCID 18379857, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 7-bromo-5-(2-imidazolin-2-ylamino)benzimidazole (0.6 g, 2.1 mmol) in 10 ml of AcOH was added Br2 (0.057 ml, 1.1 mmol) in a portion. The resulting reaction mixture was stirred for 1 h at 25° C. Concentration of reaction mixture in vacuo yields a brown oil which was subjected to column chromatography (30% NH3 sat'd MeOH/EtOAc) to provides 0.28 g (1.5 mmol, 71%) of the desired product. The product obtained was recrystallized from MeOH to afford 0.22 g (56%) of the product as a light brown solid: mp 320-321° C.; Anal. Calc. for C10H9N5Br2 requires C, 33.45; H, 2.53; N, 19.51. Found: C, 33.93; H, 4.05; N, 19.01.

Provenance & Evidence