反应详情

Dissolve 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (8.0362 g, 41.92 mmol), 4-(dimethylamino)pryidine (1.0525 g, 8.62 mmol) and adipic acid monomethyl ester (6.71 g, 41.90 mmol) in 100 mL of CH2Cl2 and allow it to stir at room temperature for 45 minutes. Add crude 2-amino-1-(5-chloro-2-methoxy-phenyl)-ethanone hydrochloride (10.99 g, 46.55 mmol) and triethylamine (9.42 g, 93.1 mmol) to the reaction mixture and allow it to stir at ambient temperature for 21 hours. Dilute the reaction with 200 mL of CH2Cl2 and wash it with 1 N HCl (2×), saturated aqueous NaHCO3 (2×) and brine (1×). Dry the organic layer with MgSO4. Filter off the drying agent and concentrate in vacuo to afford 9.39 g of the crude titled product: mass spectrum: m/z=342.1 (M+H).

1. stirringto stir at ambient temperature for 21 hours
2. additionDilute
3. washwash it with 1 N HCl (2×), saturated aqueous NaHCO3 (2×) and brine (1×)
4. dry with materialDry the organic layer with MgSO4
5. filtrationFilter off the drying agent
6. concentrationconcentrate in vacuo