反应详情

207.0 g of 3,4-dimethoxybenzaldehyde, 100.0 g of ammonium acetate and 125 ml of nitromethane are heated to boiling for 3-4 h in 1.0 l of glacial acetic acid. After cooling in an ice-bath, the precipitate is filtered off with suction, rinsed with glacial acetic acid and petroleum ether and dried. M.p.: 140-141° C. Yield: 179.0 g (68.5% of theory).

1. temperatureAfter cooling in an ice-bath
2. filtrationthe precipitate is filtered off with suction
3. washrinsed with glacial acetic acid and petroleum ether
4. customdried