反应详情

To a solution of 2,4,6-trimethylaniline (29.8 g, 0.22 mol) in dioxane (300 mL) DDQ (49.9 g, 0.22 mol) is added. The brown suspension is stirred at rt for 18 h before it is filtered. The solvent of the filtrate is evaporated and the crude product is purified by CC on silica gel eluting with hexane:EA 1:1 to give 4-amino-3,5-dimethyl-benzaldehyde (5.0 g) as a beige solid; LC-MS: tR=0.78 min, [M+1]+=150.26.

1. filtrationis filtered
2. customThe solvent of the filtrate is evaporated
3. customthe crude product is purified by CC on silica gel eluting with hexane:EA 1:1