反应详情

4-Hydroxymethylbenzoic acid (10.0 g) was dissolved in N,N-dimethylformamide (200 ml), added with 1-hydroxybenzotriazole (9.766 g) and 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (WSC.HCl, 13.855 g) and stirred at room temperature for 1 hour. The reaction mixture was added with diethylamine (13.6 ml) and further stirred at room temperature for 1 hour. The reaction mixture was added with water (200 ml) and extracted twice with dichloromethane (200 ml). The organic layer was dried over anhydrous magnesium sulfate, and then the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (elution solvent: hexane:ethyl acetate=1:2) to obtain 12.80 g of the title compound. Yield: 94%.

1. stirringfurther stirred at room temperature for 1 hour
2. extractionextracted twice with dichloromethane (200 ml)
3. dry with materialThe organic layer was dried over anhydrous magnesium sulfate
4. customthe solvent was evaporated under reduced pressure
5. customThe residue was purified by silica gel column chromatography (elution solvent: hexane:ethyl acetate=1:2)