反应详情

To a mixture of crude 4-(bromomethyl)-3-chloro-5-ethylpyridine (2.5 g, 10.66 mmol), 2-sulfanyl-6-(trifluoromethyl)pyrimidin-4-ol (1.35 g, 6.92 mmol) in anhydrous ethanol (50 mL) at 0° C. was added triethylamine (3.77 g, 37.31 mmol). The reaction mixture was allowed to stir overnight at room temperature. The solvent was evaporated to provide a crude residue. Ether was added to precipitate the triethylamine hydrochloride salt. The solid was filtered and washed with ether several times. The combined ether layers were evaporated to provide a crude residue, which was purified by Combiflash using 0-10% MeOH in dichloromethane to provide 2-{[(3-chloro-5-ethylpyridin-4-yl)methyl]sulfanyl}-6-(trifluoromethyl)pyrimidin-4-ol as a white solid (1.5 g, 40% yield); 1H NMR (400 MHz, CDCl3): δ 1.17 (t, 3H), 2.24 (s, 3H), 2.84 (q, 2H), 4.65 (s, 2H), 6.72 (s, 1H), 8.41 (s, 1H), 8.50 (s, 1H); M+ 350.1

1. customThe solvent was evaporated
2. customto provide a crude residue
3. customto precipitate the triethylamine hydrochloride salt
4. filtrationThe solid was filtered
5. washwashed with ether several times
6. customThe combined ether layers were evaporated
7. customto provide a crude residue, which
8. customwas purified by Combiflash