反应详情

A mixture of ethyl 3-(4-(1-(2-methyl-4-(4-(trifluoromethyl)-1H-pyrazol-1-yl)phenoxy)butyl)-benzamido)propanoate (55 mg, 0.11 mmol), lithium hydroxide monohydrate (7.2 mg, 0.3 mmol), methanol (2 ml), THF (2 ml), and water (0.3 ml) was stirred at 220 for 3 days. The mixture was concentrated, diluted with 8 ml of water and 0.35 ml of 1 M potassium hydrogen sulfate. The mixture was extracted with ethyl acetate, the extract was washed with brine, dried over anhydrous magnesium sulfate and concentrated to obtain 3-(4-(1-(2-methyl-4-(4-(trifluoromethyl)-1H-pyrazol-1-yl)phenoxy)butyl)benzamido)-propanoic acid as a white solid (50 mg, 96%). 1H NMR (500 MHz, CDCl3) δ 8.00 (s, 1H), 7.84 (s, 1H), 7.73 (d, J=8.29 Hz, 2H), 7.43 (d, J=2.68 Hz, 1H), 7.39 (d, J=8.29 Hz, 2H), 7.18 (dd, J=2.68, 8.78 Hz, 1H), 6.84-6.90 (m, 1H), 6.59 (d, J=8.78 Hz, 1H), 5.20 (dd, J=5.12, 7.56 Hz, 1H), 3.71 (q, J=5.94 Hz, 2H), 2.69 (t, J=5.85 Hz, 2H), 2.39 (s, 3H), 1.99-2.09 (m, 1H), 1.80-1.89 (m, 1H), 1.51-1.61 (m, 1H), 1.42-1.50 (m, 1H), 0.98 (t, J=7.32 Hz, 3H). MS (M+1): 4902.

1. concentrationThe mixture was concentrated
2. additiondiluted with 8 ml of water and 0.35 ml of 1 M potassium hydrogen sulfate
3. extractionThe mixture was extracted with ethyl acetate
4. washthe extract was washed with brine
5. dry with materialdried over anhydrous magnesium sulfate
6. concentrationconcentrated