反应详情

A 2 mol/L aqueous solution of sodium hydroxide (6.39 mL) was added to a mixture of benzyl 4-benzoyloxy-2-benzyloxybenzoate (2.80 g), methanol (10 mL) and tetrahydrofuran (10 mL), and the mixture was stirred at room temperature for 5 hrs. 2 mol/L hydrochloric acid (6.39 mL) was added to the reaction mixture at room temperature, and the solvent was evaporated under reduced pressure. Water was added to the residue, and the mixture was extracted with ethyl acetate. The organic layer was washed with brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure, and the residue was purified by medium-pressure liquid silica gel column chromatography (eluent: n-hexane/ethyl acetate=4/1) to afford benzyl 2-benzyloxy-4-hydroxybenzoate (0.86 g).

1. customthe solvent was evaporated under reduced pressure
2. additionWater was added to the residue
3. extractionthe mixture was extracted with ethyl acetate
4. washThe organic layer was washed with brine
5. dry with materialdried over anhydrous magnesium sulfate
6. customThe solvent was evaporated under reduced pressure
7. customthe residue was purified by medium-pressure liquid silica gel column chromatography (eluent: n-hexane/ethyl acetate=4/1)