反应详情

温度

130 °C

To 150.0 g of polyphosphoric acid (118%) was added with stirring 30.0 g (79.7 mmol) of 2,5-bis(p-toluidino)terephthalic acid. The stirred mixture was irradiated in the microwave oven for 2.5 minutes. After the reaction mixture was cooled to 130° C., 250 g of water was slowly added with stirring. The resultant slurry was stirred for 30 minutes, after which the solid component was collected by filtration and washed with 6.0 liters of water. The presscake was dried overnight in an oven at 60° C. to give 27.0 g of crude 2,9-dimethylquinacridone (C. I. Pigment Red 122) (100% yield).

1. customThe stirred mixture was irradiated in the microwave oven for 2.5 minutes
2. stirringThe resultant slurry was stirred for 30 minutes
3. filtrationafter which the solid component was collected by filtration
4. washwashed with 6.0 liters of water
5. customThe presscake was dried overnight in an oven at 60° C.