[N+:1]([C:4]1[CH:9]=[CH:8][C:7]([OH:10])=[CH:6][CH:5]=1)([O-:3])=[O:2].[OH-].[K+].Cl[C:14]1[N:19]=[C:18]([CH3:20])[CH:17]=[C:16]([CH3:21])[N:15]=1.O>CS(C)=O>[N+:1]([C:4]1[CH:9]=[CH:8][C:7]([O:10][C:14]2[N:19]=[C:18]([CH3:20])[CH:17]=[C:16]([CH3:21])[N:15]=2)=[CH:6][CH:5]=1)([O-:3])=[O:2]27.8 g (0.2 mole) of 4-nitro-phenol were dissolved in 100 ml of dimethylsulphoxide. After addition of 11.2 g (0.2 mole) of powdered potassium hydroxide, the mixture was stirred at room temperature for 30 minutes and 28.5 g (0.2 mole) of 2-chloro-4,6-dimethyl-pyrimidine were then added. The mixture was heated at 120° C. for 6 hours and then cooled, stirred with one liter of water and filtered off with suction. The crystals filtered off with suction were dried in air. 38 g (77.5% of theory) of 2-(4-nitrophenoxy)-4,6-dimethyl-pyrimidine were obtained.
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