反应详情

4-Chlorobenzoyl chloride (19.5 g, 111 mmol) was added over 10 min. to a stirred, cooled (0° C.) solution of 4-chloro-2-methylaniline (15 g, 106 mmol) and triethylamine (22.2 mL, 16.1 g, 159 mmol) in dichloromethane (300 mL) and the mixture was stirred at room temperature for 2 h. Water (100 mL) was added and the dichloromethane was evaporated under reduced pressure. Aqueous sodium hydrogen carbonate (saturated, 200 mL), water (200 mL) and ethyl acetate (1000 mL) were added and the layers were separated. The organic layer was dried (MgSO4) and the solvent was evaporated under reduced pressure. The residue was triturated with ether and the solid was collected and dried in vacuo to give the title compound (27.3 g, 92%). 1H NMR (360 MHz, CDCl3) δ 7.82 (3H, m), 7.79 (1H, br s), 7.48 (2H, d, J 8.5 Hz), 7.23 (2H, m), and 2.30 (3H, s).

1. customthe dichloromethane was evaporated under reduced pressure
2. additionAqueous sodium hydrogen carbonate (saturated, 200 mL), water (200 mL) and ethyl acetate (1000 mL) were added
3. customthe layers were separated
4. dry with materialThe organic layer was dried (MgSO4)
5. customthe solvent was evaporated under reduced pressure
6. customThe residue was triturated with ether
7. customthe solid was collected
8. customdried in vacuo