反应详情

To a stirred solution containing 4-(1-(4-(trifluoromethoxy)phenyl)-1H-1,2,4-triazol-3-yl)aniline (WO 2009/102736) (0.272 g, 0.849 mmol) and pyridine (0.137 mL, 1.90 mmol) dissolved in dichloromethane (2.1 mL) at 0° C. was added acetyl chloride (0.079 mL, 1.10 mmol) dropwise. The reaction was warmed to room temperature and stirred for 1 hour. The solution was diluted with dichloromethane (20 mL) and washed successively with hydrogen chloride (1 N, 1×15 mL), saturated aqueous sodium bicarbonate (1×15 mL) and saturated sodium chloride solution (15 mL). The organic layer was dried over magnesium sulfate, filtered, and concentrated to afford the title compound (0.291 g, 95%): mp 169-171° C.; 1H NMR (400 MHz, CDCl3) δ 8.55 (s, 1H), 8.15 (d, J=8.7 Hz, 2H), 7.80 (d, J=9.1 Hz, 2H), 7.63 (d, J=8.6 Hz, 2H), 7.39 (d, J=9.0 Hz, 2H), 7.28 (s, 1H), 2.22 (s, 3H). ESIMS m/z 362 ([M+H]+).

1. washwashed successively with hydrogen chloride (1 N, 1×15 mL), saturated aqueous sodium bicarbonate (1×15 mL) and saturated sodium chloride solution (15 mL)
2. dry with materialThe organic layer was dried over magnesium sulfate
3. filtrationfiltered
4. concentrationconcentrated