Hydrochloric Acid → 2-Bromo-4-nitro-1H-imidazole

Participants

Reaction Steps

Solution of 2-bromo-1-methoxymethyl-4-nitroimidazole (11.17 g), methanol (10 ml) and 5N hydrochloric acid (60 ml) was stirred under refluxing condition for 2.5 hours. After being let to stand the reaction mixture at a room temperature for 24 hours, the mixture was stirred for 1 hour under ice-cooling condition, the precipitated crystals were collected by filtration, and dried at 50° C. under a reduced pressure for 24 hours, there was obtained 2-bromo-4-nitroimidazole (6.0 g, yield: 66.0%) of white powdery product.

Provenance & Evidence