反应详情

温度

140 °C

360 g (2.43 mol) of phthalic anhydride are used as initial charge in 1.2 l of DMF (dimethylformamide) in a round-bottomed flask. 264 g (2.42 mol) of aminophenol are added slowly to this mixture. The mixture is stirred at 140° C. for 8 hours. During this period, water is removed by distillation by way of the head of a column. The mixture is permitted to cool to room temperature, and the precipitated solid is removed by suction filtration. The solid is washed first with water and then with ethanol, and is then dried in vacuo. This gives 445 g of a beige-coloured solid.

1. waitDuring this period
2. customwater is removed by distillation by way of the head of a column
3. temperatureto cool to room temperature
4. customthe precipitated solid is removed by suction filtration
5. washThe solid is washed first with water
6. dry with materialwith ethanol, and is then dried in vacuo