[OH:1][C:2]1[CH:8]=[C:7]([CH3:9])[CH:6]=[CH:5][C:3]=1[NH2:4].[Br:10][C:11]1[CH:16]=[CH:15][CH:14]=[CH:13][C:12]=1[N:17]=[C:18]=[O:19]>>[OH:1][C:2]1[CH:8]=[C:7]([CH3:9])[CH:6]=[CH:5][C:3]=1[NH:4][C:18]([NH:17][C:12]1[CH:13]=[CH:14][CH:15]=[CH:16][C:11]=1[Br:10])=[O:19]The urea was prepared from 2-hydroxy 4-methyl aniline(0.274 g, 2 mmol) and 2-bromo phenylisocyanate(0.40 g, 2 mmol) by general Method B. It was purified by dilution of the DMF solution with methylene chloride and precipitation with hexane(249 mg, 39%). EI-MS m/z 319(M−H)−.
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