反应详情

温度

155 °C

To a mixture of 4-(2-hydroxy-ethoxy)-3,5-dimethyl-benzaldehyde (0.420 g, 2.17 mmol) and 2-amino-N-(4-fluoro-phenyl)-benzamide (0.500 g, 2.17 mmol) in N,N-dimethylacetamide (5 mL) was added sodium hydrogen sulfite (0.350 g, 3.26 mmol) and p-toluenesulfonic acid (0.21 g, 0.11 mmol). The reaction mixture was heated at 155° C. for 14 hours. The reaction mixture was cooled to room temperature and diluted with cold water (20 mL) to produce the precipitate. The yellow solid was filtered, washed with cold water (2×20 mL), methanol, and dried under vacuum to provide crude product, which was purified by column chromatography (silica gel 230-400 mesh; 10% EtOAc/hexane as eluent) to give the title compound as white solid. Yield: 0.10 g (11%). MP 95-97° C. 1H-NMR (400 MHz, CDCl3): δ 8.35 (d, 1H), 7.81-7.78 (d, 2H), 7.58-7.40 (m, 1H), 7.20-7.15 (m, 2H), 7.15-7.01 (m, 4H), 3.98-3.80 (m, 4H), 2.21 (s, 6H), 2.01 (t, 1H). MS (ES+) m/z: 405.01 (M+1).

1. temperatureThe reaction mixture was cooled to room temperature
2. customto produce the precipitate
3. filtrationThe yellow solid was filtered
4. washwashed with cold water (2×20 mL), methanol
5. customdried under vacuum
6. customto provide crude product, which
7. customwas purified by column chromatography (silica gel 230-400 mesh; 10% EtOAc/hexane as eluent)