反应详情

To a solution of 5-bromovanillin (2.00 g, 8.65 mmol) in acetone (50 mL) was added potassium carbonate (1.4 g, 10.38 mmol) and dimethylsulfate (1 mL, 10.38 mmol). The solution was stirred at room temperature for 16 hours. The reaction mixture was diluted with ethyl acetate and the organic layer was washed successively with water and brine, dried over anhydrous magnesium sulfate, filtered and evaporated to afford 1.88 g of 3-bromo-4,5-dimethoxybenzaldehyde (89%).

1. washthe organic layer was washed successively with water and brine
2. dry with materialdried over anhydrous magnesium sulfate
3. filtrationfiltered
4. customevaporated