[CH3:1][C:2]1[N:3]([C:7]2[CH:12]=[CH:11][C:10]([N+:13]([O-])=O)=[CH:9][CH:8]=2)[CH:4]=[CH:5][N:6]=1.C([O-])=O.[Na+].C(O)=O>CO.[Pd]>[CH3:1][C:2]1[N:3]([C:7]2[CH:12]=[CH:11][C:10]([NH2:13])=[CH:9][CH:8]=2)[CH:4]=[CH:5][N:6]=1A mixture of 54.0 g of 2-methyl-1-(p-nitrophenyl)imidazole, 2.87 g of palladium black, 36.7 g of sodium formate and 47.4 ml of formic acid in 1100 ml of methyl alcohol is stirred at room temperature for 18 hours under a hydrogen atmosphere. The mixture is filtered and the filtrate evaporated to a residue. The residue is partitioned between saturated potassium bicarbonate and chloroform. The organic layer is dried and passed through a pad of hydrous magnesium silicate. The filtrate is evaporated to a residue which is crystallized from ether:ethanol to give 34.9 g of the desired product as a solid, m.p. 108°-110° C.
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