Patent ID: 8129544

Claim:
A method for preparing a 4-nitroimidazole compound represented by the formula (2a), wherein X A is a halogen atom, which is characterized by reducing a 4-nitroimidazole compound represented by the formula (3), wherein R A′ is a lower alkoxy group-substituted lower alkyl group, a phenyl-lower alkoxy group-substituted lower alkyl group, a cyano group-substituted lower alkyl group, or a phenyl-lower alkyl group which may have a lower alkoxy group as the substituent on the phenyl ring; X A and X 1 are each a halogen atom, and removing the R A′ group from the obtained 1-substituted-4-nitroimidazole compound represented by the formula (1a), wherein R A′ and X A are the same as defined above.