CN(C)[CH:3]=[CH:4][C:5]([C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][N:8]=1)=O.[N+]([O-])(O)=O.[N+:18]([C:21]1[CH:22]=[C:23]([NH:27][C:28]([NH2:30])=[NH:29])[CH:24]=[CH:25][CH:26]=1)([O-:20])=[O:19].[OH-].[Na+]>C(O)(C)C>[N+:18]([C:21]1[CH:22]=[C:23]([NH:27][C:28]2[N:30]=[C:5]([C:7]3[CH:12]=[CH:11][CH:10]=[CH:9][N:8]=3)[CH:4]=[CH:3][N:29]=2)[CH:24]=[CH:25][CH:26]=1)([O-:20])=[O:19]1 g (5.68 mmol)of 3-dimethylamino-1-(2-pyridyl)-2-propen-1-one [EP-A-233 461] is dissolved in 8 ml of isopropanol, and 1.38 g (5.68 mmol) of 3-nitrophenylguanidine nitrate are added. After the addition of 0.25 g (6.24 mmol) of sodium hydroxide, the yellow suspension is heated at reflux for 20 hours, then cooled to 0°, filtered and washed with 30 ml of isopropanol. The filtration residue is stirred in 15 ml of ethanol for 20 minutes, filtered and washed with a small amount of cold ethanol, yielding N-(3-nitrophenyl)-4-(2-pyridyl)-2-pyrimidine-amine; m.p. 213°-219°.
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