Bromine → 3-Bromo-6-chloroimidazo(1,2-b)pyridazine

Participants

Reaction Steps

The 6-Chloro-imidazo[1,2-b]pyridazine (4) (500 mg, 0.0032 mol) was taken in glacial acetic acid (5 ml) and bromine (0.4 ml) was added slowly at room temperature. After 20 mins solid precipitated out which was filtered. The solid was washed with ether (3×15 ml) and dried under air to furnish 3-Bromo-6-chloro-imidazo[1,2-b]pyridazine (5) (400 mg, yield=60%).

Provenance & Evidence