反应详情

温度

40 °C

162.2 g of p-tert.amyl-benzaldehyde are added under nitrogen gasification to a solution of 1.56 g of potassium hydroxide in 113 ml of methanol and 48.8 g of propionaldehyde are subsequently added dropwise at 40° C. over a period of 6 hours. The mixture is subsequently stirred at 40° C. for an additional hour, 2 ml of acetic acid are added and the mixture is concentrated on a rotary evaporator. The oily suspension is taken up in ether, washed neutral with water, dried and evaporated. By distillation there is obtained pure 3-(p-tert.amyl-phenyl)-2-methyl-acrolein of boiling point 117°-120° C./0.035 Torr.

1. additionare subsequently added dropwise at 40° C. over a period of 6 hours
2. concentrationthe mixture is concentrated on a rotary evaporator
3. washwashed neutral with water
4. customdried
5. customevaporated
6. distillationBy distillation there