[NH2:1][C:2]1[CH:19]=[CH:18][CH:17]=[CH:16][C:3]=1[O:4][C:5]1[CH:6]=[C:7]2[C:11](=[CH:12][CH:13]=1)[C:10](=[O:14])[NH:9][C:8]2=[O:15].[OH-].[NH4+:21]>>[NH2:1][C:2]1[CH:19]=[CH:18][CH:17]=[CH:16][C:3]=1[O:4][C:5]1[CH:6]=[C:7]([C:8]([NH2:21])=[O:15])[C:11](=[CH:12][CH:13]=1)[C:10]([NH2:9])=[O:14]5-(2-Aminophenoxy)-isoindole-1,3-dione (0.1 g, 0.38 mmol) in conc. ammonium hydroxide (aq) was stirred at 60° C. for two hours. The reaction mixture was evaporated in vacuo (cold in order not to make the imide again). The crude mixture was used without any purification.
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