3-苯基吡咯-2,5-二酮

反应条件: temp:150.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Maleic anhydride polymer (product of Polyscience Co.) and aminophenol were put respectively in amounts of 5 g together with 100 mL of xylene into a 3-neck round flask into which nitrogen had been filled. Then an agitation was carried out for 30 minutes at the room temperature. Then 2.9 g of isoquinoline was put, and the temperature was raised slowly up to 150 degrees C., so that a reaction would occur. Thus the reaction was carried out for 3 hours while the formed water was slowly discharged. Then the reaction was terminated, and the temperature was lowered to the room temperature. Then the solution was put into 500 mL of methanol to capture the precipitate. Then the precipitate was filtered, and was vacuum-dried at 100 degrees C., thereby obtaining polyhydroxy phenylmaleimide. had been filled , so that a reaction Then the reaction was terminated was lowered to the room temperature Then the precipitate was filtered was vacuum-dried at 100 degrees C

反应条件: temp:150.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Maleic anhydride polymer (product of Polyscience Co.) and aminophenol were put respectively in amounts of 5 g together with 100 mL of xylene into a 3-neck round flask into which nitrogen had been filled. Then an agitation was carried out for 30 minutes at the room temperature. Then 2.9 g of isoquinoline was put, and the temperature was raised slowly up to 150 degrees C., so that a reaction would occur. Thus the reaction was carried out for 3 hours while the formed water was slowly discharged. Then the reaction was terminated, and the temperature was lowered to the room temperature. Then the solution was put into 500 mL of methanol to capture the precipitate. Then the precipitate was filtered, and was vacuum-dried at 100 degrees C., thereby obtaining polyhydroxy phenylmaleimide. had been filled , so that a reaction Then the reaction was terminated was lowered to the room temperature Then the precipitate was filtered was vacuum-dried at 100 degrees C

反应条件: temp:150.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Maleic anhydride polymer (product of Polyscience Co.) and aminophenol were put respectively in amounts of 5 g together with 100 mL of xylene into a 3-neck round flask into which nitrogen had been filled. Then an agitation was carried out for 30 minutes at the room temperature. Then 2.9 g of isoquinoline was put, and the temperature was raised slowly up to 150 degrees C., so that a reaction would occur. Thus the reaction was carried out for 3 hours while the formed water was slowly discharged. Then the reaction was terminated, and the temperature was lowered to the room temperature. Then the solution was put into 500 mL of methanol to capture the precipitate. Then the precipitate was filtered, and was vacuum-dried at 100 degrees C., thereby obtaining polyhydroxy phenylmaleimide. had been filled , so that a reaction Then the reaction was terminated was lowered to the room temperature Then the precipitate was filtered was vacuum-dried at 100 degrees C

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: In a 500 ml three-necked flask equipped with a stirring means and a dropping funnel were placed 7.92 g of 3,5-dinitrobenzyl alcohol, 6.90 g of α-phenylmaleimide and 11.5 g of triphenylphosphine, and the mixture was dissolved in 200 ml of THF with stirring. To the solution was added dropwise 20.9 g of diethyl azodicarboxylate (as a 40% toluene solution) at 0° C. or lower. After the dropwise addition, the temperature was allowed to rise to room temperature and stirring was continued for 24 hours. The reaction solution was poured into water and extracted three times with ethyl acetate. The organic layer was washed three times with water and dried over anhydrous magnesium sulfate. The drying agent was separated by filtration and the organic layer was concentrated under reduced pressure. The resulting pale yellow crystal was collected by filtration with n-heptane and recrystallized twice from ethyl acetate to afford 10.41 g of N-(3,5-dinitrophenyl)methyl-α-phenylmaleimide. In a 500 ml three-necked flask equipped with a stirring means and a dropping funnel After the dropwise addition to rise to room temperature stirring extracted three times with ethyl acetate The organic layer was washed three times with water dried over anhydrous magnesium sulfate The drying agent was separated by filtration the organic layer was concentrated under reduced pressure The resulting pale yellow crystal was collected by filtration with n-heptane recrystallized twice from ethyl acetate

反应条件: temp:150.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Maleic anhydride polymer (product of Polyscience Co.) and aminophenol were put respectively in amounts of 5 g together with 100 mL of xylene into a 3-neck round flask into which nitrogen had been filled. Then an agitation was carried out for 30 minutes at the room temperature. Then 2.9 g of isoquinoline was put, and the temperature was raised slowly up to 150 degrees C., so that a reaction would occur. Thus the reaction was carried out for 3 hours while the formed water was slowly discharged. Then the reaction was terminated, and the temperature was lowered to the room temperature. Then the solution was put into 500 mL of methanol to capture the precipitate. Then the precipitate was filtered, and was vacuum-dried at 100 degrees C., thereby obtaining polyhydroxy phenylmaleimide. had been filled , so that a reaction Then the reaction was terminated was lowered to the room temperature Then the precipitate was filtered was vacuum-dried at 100 degrees C