O.[C:2]([CH2:5][NH:6][C:7]1[CH:12]=[C:11]([N+:13]([O-])=O)[CH:10]=[CH:9][C:8]=1[O:16][CH3:17])(=[O:4])[NH2:3]>[Fe].C(O)(=O)C>[C:2]([CH2:5][NH:6][C:7]1[CH:12]=[C:11]([NH2:13])[CH:10]=[CH:9][C:8]=1[O:16][CH3:17])(=[O:4])[NH2:3]Into 180 ml of water one adds 45 g of powdered iron and 15 ml of acetic acid. One brings this mixture under agitation to a temperature of 85° C. then one adds, little by little, 0.2 mol (45 g) of 2-carbamylmethylamino-4-nitro anisole. One maintains the reaction mixture for 10 minutes at 90° C. One adds soda to obtain a pH of 7.5, and then filters it hot. The filtrate is cooled to a temperature of 0° C. The expected product which precipitates is drained, washed with very little water, dried, recrystallized in methylisobutylketone. It melts at 144° C.
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