反应详情

A solution of [5-(4-fluoro-phenylcarbamoyl)-pyridin-2-yloxy]-acetic acid methyl ester (0.020 g, 0.66 mmol), phenethyl alcohol (0.078 mL, 0.66 mmol) and sulfuric acid (1 drop) in toluene (3 mL) was heated at reflux. After 4 h the reaction mixture was poured into ethyl acetate and washed with saturated sodium bicarbonate and dried over sodium sulfate. Removal of the solvents provided a solid. Purification by trituration using ethyl acetate/hexanes gave 0.011 g (42%) of the titled product as a white solid: 1H NMR (300 MHz, DMSO-d6) δ 10.29 (s 1H); 8.65 (m, 1H); 8.23 (m, 1H); 7.74 (m, 2H); 7.01-7.27 (m, 8H); 4.94 (s, 2H); 4.27 (m, 2H); 2.85 (m, 2H); MS (EI) m/z 393.03 (M−H)−.

1. temperatureat reflux
2. washwashed with saturated sodium bicarbonate
3. dry with materialdried over sodium sulfate
4. customRemoval of the solvents
5. customprovided a solid
6. customPurification by trituration