反应详情

To 4-(1-(4-(trifluoromethoxy)phenyl)-1H-1,2,4-triazol-3-yl)benzaldehyde (8.49 g, 25.5 mmol) in anhydrous tetrahydrofuran (102 mL) in dry ice/acetone bath was added methylmagnesium bromide (1 M in butyl ether, 25.5 mL, 25.5 mmol). The solution was then warmed to room temperature and stirred overnight. The reaction was acidified with hydrogen chloride (2 N, 10 mL) until pH 2, diluted with water, and extracted with ethyl acetate (2×). The organic layers were dried over anhydrous sodium sulfate, filtered, and concentrated to afford the title compound as an orange liquid (8.80 g, 94%): 1H NMR (400 MHz, CDCl3) δ 8.55 (s, 1H), 8.27-8.11 (m, 2H), 7.90-7.68 (m, 2H), 7.49 (d, J=8.1 Hz, 2H), 7.39 (d, J=8.3 Hz, 2H), 4.98 (q, J=6.5 Hz, 1H), 1.54 (d, J=6.5 Hz, 3H); 19F NMR (376 MHz, CDCl3) δ −58.03; ESIMS m/z 350 ([M+H]+).

1. extractionextracted with ethyl acetate (2×)
2. dry with materialThe organic layers were dried over anhydrous sodium sulfate
3. filtrationfiltered
4. concentrationconcentrated