反应详情

36 g (0.3 mol) of para-aminobenzaldehyde are suspended in 300 ml of ethanol. 33.9 g (0.3 mol) of ethyl cyanoacetate and a mixture of 0.375 ml of diethylamine and 1.125 ml of acetic acid, as catalyst, are added to the suspension. The reaction mixture is refluxed for 2 hours, left to cool and then crystallized. After separating out the crystals by filtration and drying, 53.9 g (83% yield) of ethyl 3-(4-aminophenyl)-2-cyanoacrylate are obtained in the form of orange-coloured crystals.

1. additionas catalyst, are added to the suspension
2. temperatureThe reaction mixture is refluxed for 2 hours
3. waitleft
4. temperatureto cool
5. customcrystallized
6. customAfter separating out the crystals by filtration
7. customdrying