C[N:2]1[C:8](=O)[O:7][C:5](=O)[C:4]2=[CH:10][CH:11]=[CH:12][CH:13]=[C:3]12.[N:14]1([CH2:19][CH2:20][CH2:21][NH2:22])[CH:18]=[CH:17][N:16]=[CH:15]1>O1CCOCC1>[CH3:8][NH:2][C:3]1[CH:13]=[CH:12][CH:11]=[CH:10][C:4]=1[C:5]([NH:22][CH2:21][CH2:20][CH2:19][N:14]1[CH:18]=[CH:17][N:16]=[CH:15]1)=[O:7]N-Methylisatoic anhydride (17.7 g) was added in portions to a stirred solution of 3-imidazol-1-ylpropylamine (12.5 g) in dioxan (150 ml) over a period of 15 minutes. Stirring was continued for 40 minutes before the solution was evaporated in vacuo to give 2-methylamino-N-(3-imidazol-1-ylpropyl)benzamide (18.0 g), in the form of a buff coloured solid, m.p. 138°-141° C., after recrystallisation from isopropanol.
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