反应详情

To a stirred solution of 2-(benzyloxy)-4,5-dimethoxybenzaldehyde (246, 5.05 g, 18.6 mmol) in ethyl acetate (100 mL) was added 10% palladium on charcoal (250 mg). The flask was purged with hydrogen and then the reaction mixture was stirred under a hydrogen atmosphere (1 atm) for 15 hours, filtered through a celite pad, the filtrate was evaporated under reduced pressure, and the resulting solid dried under vacuum to afford 243b as a white solid (3.3 g, 98% yield). 1H NMR: (DMSO) δ 11.39 (s, 1H), 9.68 (s, 1H), 6.90 (d, J=2.5 Hz, 1H), 6.47 (s, 1H), 3.94 (s, 3H), 3.89 (s, 3H).

1. customThe flask was purged with hydrogen
2. filtrationfiltered through a celite pad
3. customthe filtrate was evaporated under reduced pressure
4. customthe resulting solid dried under vacuum