反应详情

温度

25 °C

To a mixture of N-(6-ethoxy-5-(trifluoromethyl)pyridin-3-yl)-2-(4-(5-ethoxy-6-((4-methoxybenzyl)oxy)pyridin-3-yl)-2-fluorophenyl)acetamide (40 mg, 0.067 mmol) in DCM (10 mL) was added TFA (0.701 mL, 9.10 mmol). The mixture was stirred at 25° C. for 2 h. Then the reaction residue was added to NaOH (2.5 m, 3 mL) and concentrated. The crude material was purified by preparative HPLC (MeCN/H2O as eluants, basic condition) to yield a white solid of N-(6-ethoxy-5-(trifluoromethyl)pyridin-3-yl)-2-(4-(5-ethoxy-6-oxo-1,6-dihydropyridin-3-yl)-2-fluorophenyl)acetamide, hydrochloride (15.66 mg, 0.030 mmol, 49.8% yield): 1H NMR (400 MHz, CD3OD) δ 8.50 (s, 1H), 8.29 (d, J=2.0 Hz, 1H), 7.49-7.41 (m, 1H), 7.40-7.31 (m, 3H), 7.26 (d, J=2.0 Hz, 1H), 4.47 (m, 2H), 4.15 (m, 2H), 3.82 (s, 2H), 1.49 (t, J=7.0 Hz, 3H), 1.40 (t, J=7.0 Hz, 3H); ES-LCMS m/z 480.2 (M+H).

1. concentrationconcentrated
2. customThe crude material was purified by preparative HPLC (MeCN/H2O as eluants, basic condition)