反应详情

3-(3,4,5,6-Tetramethoxy-2-methylbenzyl)-2-hydroxybenzaldehyde (1.16 g, 3.35 mol) was dissolved in acetone (5 ml) and after adding thereto anhydrous sodium carbonate (1.02 g, 7.38 mmol) and benzyl bromide (0.69 g, 4.02 mmol), the solution was refluxed under heating for 3 hours. The reaction solution was filtered, the filtrate was concentrated and the obtained residue was purified by silica gel column chromatography (hexand:ethyl acetate=2:1) to obtain the titled compound (1.45 g, 3.32 mmol, 99%).

1. additionafter adding
2. temperatureunder heating for 3 hours
3. filtrationThe reaction solution was filtered
4. concentrationthe filtrate was concentrated
5. customthe obtained residue was purified by silica gel column chromatography (hexand:ethyl acetate=2:1)