2,2,2-Trifluoroethanol → 2-Methylthio-4-(2,2,2-trifluoroethoxy)pyrimidine

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Reaction Steps

2,2,2-Trifluoroethanol (3.74 g) was dissolved in N,N-dimethylformamide (50 mL), sodium hydride (about 60% in oil) (1.37 g) was added under ice-cooling, and the mixture was stirred at room temperature for 20 min. After ice-cooling again, 4-chloro-2-(methylthio)pyrimidine (5.0 g) was added, and the mixture was stirred at 0° C. for 1 hr. Saturated aqueous ammonia chloride solution was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine and dried over anhydrous sodium sulfate. The solvent was evaporated under reduced pressure to give the title compound (5.1 g) as a slightly yellow oil.

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