[NH2:1][C:2]1[CH:7]=[CH:6][C:5]([CH3:8])=[CH:4][CH:3]=1.[N+:9]([C:12]1[CH:13]=[C:14]([CH:18]=[CH:19][CH:20]=1)[C:15](O)=[O:16])([O-:11])=[O:10]>>[N+:9]([C:12]1[CH:13]=[C:14]([CH:18]=[CH:19][CH:20]=1)[C:15]([NH:1][C:2]1[CH:7]=[CH:6][C:5]([CH3:8])=[CH:4][CH:3]=1)=[O:16])([O-:11])=[O:10]Using p-toluidine (1.19 g, 11.0 mmol) and 3-nitrobenzoic acid (1.76 g, 10.0 mmol), the procedure of Reference Example 16 was repeated to obtain 2.27 g (88.3%) of the title compound in the form of colorless needle crystals.
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