Patent ID: 7560593

Claim:
A process for producing nitroisourea derivatives represented by the following general formula (3), in which nitroisourea derivatives represented by the following general formula (1) and amines represented by the following general formula (2) or a salt thereof are reacted in the presence of a catalytic amount of a hydrogen carbonate, wherein, in the formula, R 1 , represents an alkyl group having 1 to 4 carbon atoms or a benzyl group, wherein, in the formula, R 2 represents an alkyl group having 1 to 4 carbon atoms; and R 3 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, wherein, in the formula, R 1 represents an alkyl group having 1 to 4 carbon atoms or a benzyl group; R 2 represents an alkyl group having 1 to 4 carbon atoms; and R 3 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.