反应详情

To a 250 mL round-bottomed flask with a teflon stir bar and a reflux condensor were added methyl (3-bromo-5-formyl-4-hydroxyphenyl)acetate (23.3 g, 85.3 mmol, prepared as described in Reference A above), dichloromethane (100 mL), benzyl bromide (15.32 g, 10.64 mL, 89.59 mmol), and N-ethyldiisopropylamine (11.6 g, 15.6 mL, 89.5 mmol). The reaction mixture was heated to reflux for 14 h and then allowed to cool to room temperature. Dichloromethane (100 mL) was added and the organic layer was separated and washed with 200 mL of a 3% solution of NaOH in water. The organic layer was concentrated to give (4-benzyloxy-3-bromo-5-formyl-phenyl) acetic acid methyl ester (30.65 g) as oil.

1. customprepared
2. temperatureThe reaction mixture was heated
3. temperatureto reflux for 14 h
4. customthe organic layer was separated
5. washwashed with 200 mL of a 3% solution of NaOH in water
6. concentrationThe organic layer was concentrated