反应详情

温度

200 °C

To a mixture of 4-chloro-2-phenylquinoline (J. Het. Chem., 20, 1983, 121-128)(0.53 g, 2.21 mmol) in diphenylether (5 mL) was added 3-amino-5-methylpyrazole (0.43 g, 4.42 mmol) and the resulting mixture heated at 200° C. overnight with stirring. The reaction mixture was cooled to ambient temperature then petroleum ether (20 mL) was added and the resulting precipitate was isolated by filtration. The crude solid was purified by flash chromatography (SiO2, gradient DCM-MeOH) to afford V-4 as a white solid: mp 242-244° C.; 1H NMR (DMSO) δ 2.27 (3H, s), 6.02 (1H, s), 7.47 (2H, d), 7.53-7.40 (2H, br m), 7.67 (1H, m), 7.92 (1H, m), 8.09 (2H, d), 8.48 (2H, m), 9.20 (1H, s), 12.17 (1H, br s); IR (solid) 1584, 1559, 1554, 1483, 1447, 1430, 1389; MS 301.2 (M+H)+.

1. temperatureThe reaction mixture was cooled to ambient temperature
2. customthe resulting precipitate was isolated by filtration
3. customThe crude solid was purified by flash chromatography (SiO2, gradient DCM-MeOH)
4. customto afford V-4 as a white solid