[CH2:1]([N:8]1[CH:12]=[CH:11][N:10]=[C:9]1[N+:13]([O-])=O)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[Cl-].[NH4+]>[Fe]>[CH2:1]([N:8]1[CH:12]=[CH:11][N:10]=[C:9]1[NH2:13])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1The nitroimidazole (1.5 mmol) from above reduced using iron powder and ammonium chloride employing the procedure described in Example 159 to yield 1-benzyl-2-amino-1H-imidazole which was used without any purification.
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