反应详情

温度

15 °C

In a reactor, 30.0 g (0.275 moles) of p-aminophenol, 29.7 g (0.303 moles) of maleic anhydride, 39.0 g (0.275 moles) of phosphorus pentoxide and 100 g of dimethylformamide were charged and stirred at 15° C. for 2 hours. The reaction mixture was then gradually heated to 60° C., at which temperature the reaction was further continued for 2.5 hours. After cooling to room temperature, the resulting reaction mixture was admixed with water to precipitate N-(p-hydroxyphenyl) maleimide in the form of crystals. The crystals were separated by filtration, washed with water and then dried to obtain 25.1 g (0.133 moles) of N-(p-hydroxyphenyl) maleimide (yield 48.2%).

1. temperatureThe reaction mixture was then gradually heated to 60° C., at which temperature the reaction
2. waitwas further continued for 2.5 hours
3. temperatureAfter cooling to room temperature
4. customthe resulting reaction mixture
5. customto precipitate N-(p-hydroxyphenyl) maleimide in the form of crystals
6. customThe crystals were separated by filtration
7. washwashed with water
8. customdried