甲基 4,5-二氟-2-羟基苯甲酸甲酯

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A mixture of 4,5-difluoro-2-hydroxybenzoic acid (20 mmol), methanol (100 ml) and concentrated H2SO4 (5 ml) was refluxed for 48 h. Then, the reaction mixture was concentrated. The residue was dissolved in ethyl acetate, washed with brine and a saturated NaHCO3 solution and neutralized with citric acid. The organic layer was dried over MgSO4 and concentrated in vacuo to give the product. Yield: 2.8 g (97% purity, 74% yield). was refluxed for 48 h Then, the reaction mixture was concentrated The residue was dissolved in ethyl acetate washed with brine The organic layer was dried over MgSO4 concentrated in vacuo to give the product

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A mixture of 4,5-difluoro-2-hydroxybenzoic acid (20 mmol), methanol (100 ml) and concentrated H2SO4 (5 ml) was refluxed for 48 h. Then, the reaction mixture was concentrated. The residue was dissolved in ethyl acetate, washed with brine and a saturated NaHCO3 solution and neutralized with citric acid. The organic layer was dried over MgSO4 and concentrated in vacuo to give the product. Yield: 2.8 g (97% purity, 74% yield). was refluxed for 48 h Then, the reaction mixture was concentrated The residue was dissolved in ethyl acetate washed with brine The organic layer was dried over MgSO4 concentrated in vacuo to give the product

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A mixture of 4,5-difluoro-2-hydroxybenzoic acid (20 mmol), methanol (100 ml) and concentrated H2SO4 (5 ml) was refluxed for 48 h. Then, the reaction mixture was concentrated. The residue was dissolved in ethyl acetate, washed with brine and a saturated NaHCO3 solution and neutralized with citric acid. The organic layer was dried over MgSO4 and concentrated in vacuo to give the product. Yield: 2.8 g (97% purity, 74% yield). was refluxed for 48 h Then, the reaction mixture was concentrated The residue was dissolved in ethyl acetate washed with brine The organic layer was dried over MgSO4 concentrated in vacuo to give the product