反应详情

To ethyl 2-methyl-3-(4-(1-(4-(trifluoromethoxy)phenyl)-1H-1,2,4-triazol-3-yl)phenyl)propanoate (C37) (0.986 g, 2.35 mmol) in methanol (7.8 mL) was added sodium hydroxide (2 N, 5.9 mL, 11.8 mmol) and the solution was stirred at room temperature for 4 hours. The reaction was acidified with hydrogen chloride (2 N), and the white precipitate was vacuum-filtered to afford the title compound as a white solid (0.865 g, 93%): mp 142-144° C.; 1H NMR (400 MHz, DMSO-d6) δ 12.19 (s, 1H), 9.39 (s, 1H), 8.14-7.95 (m, 4H), 7.71-7.55 (m, 2H), 7.42-7.27 (m, 2H), 3.04-2.89 (m, 1H), 2.75-2.62 (m, 2H), 1.07 (d, J=6.2 Hz, 3H). 19F NMR (376 MHz, acetone-D6) δ −58.03; ESIMS m/z 392 ([M+H]+).

1. filtrationthe white precipitate was vacuum-filtered