Cl[C:2]1[N:3]=[C:4]([C:9]2[CH:14]=[CH:13][CH:12]=[C:11]([N+:15]([O-:17])=[O:16])[C:10]=2[CH3:18])[N:5]=[N:6][C:7]=1[NH2:8].[NH2:19][C:20]1[CH:25]=[CH:24][C:23]([C:26]([N:28]2[CH2:33][CH2:32][O:31][CH2:30][CH2:29]2)=[O:27])=[CH:22][CH:21]=1.C(N(CC)C(C)C)(C)C>O1CCOCC1>[NH2:8][C:7]1[N:6]=[N:5][C:4]([C:9]2[CH:14]=[CH:13][CH:12]=[C:11]([N+:15]([O-:17])=[O:16])[C:10]=2[CH3:18])=[N:3][C:2]=1[NH:19][C:20]1[CH:21]=[CH:22][C:23]([C:26]([N:28]2[CH2:29][CH2:30][O:31][CH2:32][CH2:33]2)=[O:27])=[CH:24][CH:25]=1A mixture of 5-chloro-3-(2-methyl-3-nitrophenyl)-1,2,4-triazin-6-amine (1.05 g, 3.95 mmol), (4-aminophenyl)(morpholino)methanone (1.630 g, 7.90 mmol), and N,N-diisopropylethylamine (1.243 mL, 7.11 mmol) in 1,4-dioxane (60 mL) was heated at reflux for 2 days. The volatiles were removed under vacuum. To the residue was added water (60 mL). The precipitating material was collected by suction filtration. The filter cake was purified by ISCO (120 g silica gel, solid loading, 3-8% MeOH/CH2Cl2) to provide the desired product, (4-(6-amino-3-(2-methyl-3-nitrophenyl)-1,2,4-triazin-5-ylamino)phenyl)(morpholino)methanone (0.595 g, 1.339 mmol, 33.9% yield), as a yellow solid.
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