反应详情

温度

60 °C

To a solution of 2-{3-[3-(2-ethyl-5-hydroxy-4-oxazol-4-yl-phenoxy)propoxy]-2-propylphenoxy}benzoic acid methyl ester (89 mg, 0.14 mmol) in methanol (2 mL) was added 1 M lithium hydroxide solution (0.28 mL) and the resulting mixture warmed at 60° C. for 3.5 h. The mixture was cooled to room temperature and concentrated in vacuo. The aqueous residue was diluted with water and the pH adjusted to ˜4. The mixture was extracted three times with methylene chloride. The combined organic extracts were dried (sodium sulfate), filtered, and concentrated in vacuo to provide 27 mg (92%) of the title compound as a yellow solid. 1H NMR (DMSO-d6) δ 12.83 (bs, 1H), 10.12 (bs, 1H), 8.39 (s, 1H), 8.25 (s, 1H), 7.78 (dd, J=8, 1 Hz, 1H), 7.64 (s, 1H), 7.47 (t, J=8 Hz, 1H), 7.16 (m, 2H), 6.80 (t, J=8 Hz, 2H), 6.56 (s, 1H), 6.35 (d, J=8 Hz, 1H), 4.20 (t, J=6 Hz, 2H), 4.12 (t, J=6 Hz, 2H); 2.54 (m, 4H), 2.24 (quintet, J=6 Hz, 2H), 1.43 (hextet, J=8 Hz, 2H), 1.10 (t, J=8 Hz, 3H), 5 0.80 (t, J=8 Hz, 3H); TOF MS ES+ exact mass calculated for C30H32NO7 (p+1): m/z=518.2179. Found: 518.2206; IR (KBr, cm−1) 2961, 1696, 1460, 1222. Anal. Calcd for C30H31NO7: C, 69.62; H, 6.04; N, 2.71. Found: C, 68.71; H. 5.82; N, 2.65.

1. temperatureThe mixture was cooled to room temperature
2. concentrationconcentrated in vacuo
3. additionThe aqueous residue was diluted with water
4. extractionThe mixture was extracted three times with methylene chloride
5. dry with materialThe combined organic extracts were dried (sodium sulfate)
6. filtrationfiltered
7. concentrationconcentrated in vacuo