Nitric Acid → 2-methyl-5,6-dinitro-1H-benzimidazole

Participants

Reaction Conditions

Reaction Steps

To a solution of 2-methyl-5-nitrobenzimidazole in concentrated sulfuric acid was added fuming nitric acid at −5° C. Upon addition of the fuming nitric acid, the reaction mixture was warmed to 0° C. held for 1 h and poured into crushed ice. The precipitate which formed was filtered, washed with water, and dried overnight at 40° C. to give the title compound.

Provenance & Evidence