反应详情

温度

20 °C

14 g (0.051 mol) of dibromomaleic acid are stirred in 100 ml of glacial acetic acid under reflux for 1 hour. 8.2 g (0.05 mol) of 3-ethyl-3-phenyl-propylamine are added to the cooled solution of the dibromomaleic anhydride thus prepared, and the mixture is stirred under reflux for a further 3 hours. The mixture is cooled to 20° C. and the precipitate is filtered off with suction. After drying, 11.4 g (56% of theory) of dibromomaleic acid N-3-phenylpentylimide of melting point 71°-73° C. are obtained.

1. temperatureunder reflux for 1 hour
2. customthus prepared
3. temperatureunder reflux for a further 3 hours
4. filtrationthe precipitate is filtered off with suction
5. customAfter drying