反应详情

To a solution of 3-(bromomethyl)-4-chloro-1-methyl-1H-pyrazole (61.7 mmol) in absolute ethanol (250 mL) was added 6-methyl-2-sulfanylpyrimidin-4-ol (5.84 g, 41.1 mmol) and triethylamine (23.0 mL, 165 mmol) at 0° C. The mixture was stirred at room temperature overnight. The white solid was filtered and washed with diethyl ether (300-500 mL). The filtrate was recovered, and the solvent was evaporated. The residue triturated in water, filtered, and washed with water (3×300 mL) and then DCM (50 mL). The solid was died under vacuum overnight. 2-{[(4-chloro-1-methyl-1H-pyrazol-3-yl)methyl)sulfanyl}-6-methylpyrimidin-4-ol was obtained as a white solid (5.48 g, 49% yield for 2 steps); 1H NMR (400 MHz, DMSO-d6): δ 2.20 (bs, 3H), 3.78 (s, 3H), 4.35 (s, 2H), 6.05 (bs, 1H), 7.92 (s, 1H); LRMS (ES+) m/z 271 (100%, M+1); 273 (35%, M+3).

1. filtrationThe white solid was filtered
2. washwashed with diethyl ether (300-500 mL)
3. customThe filtrate was recovered
4. customthe solvent was evaporated
5. customThe residue triturated in water
6. filtrationfiltered
7. washwashed with water (3×300 mL)
8. customwas died under vacuum overnight