[C:1]([NH:5][C:6](=[S:23])[NH:7][C:8]1[CH:9]=[C:10]([CH:19]=[CH:20][C:21]=1[NH2:22])[C:11]([C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1)=[O:12])([O:3][CH3:4])=[O:2].[C:24](Cl)(=[O:31])[C:25]1[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=1>C1(C)C=CC=CC=1>[C:1]([NH:5][C:6](=[S:23])[NH:7][C:8]1[CH:9]=[C:10]([CH:19]=[CH:20][C:21]=1[NH:22][C:24](=[O:31])[C:25]1[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=1)[C:11]([C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1)=[O:12])([O:3][CH3:4])=[O:2]To a suspension of 3-(3-carbomethoxythioureido)-4-aminobenzophenone (3.29 g.) in toluene (200 ml.) is added benzoyl chloride (1.4 g.). The mixture is refluxed for 18 hours, cooled to room temperature and the precipitate collected, washed with hexane and dried to afford 2.8 g. (65% yield) of 3-(3-carbomethoxythioureido)-4-benzamidobenzophenone as a gray solid, m.p. 191°-192° C., dec.
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