反应详情

温度

70 °C

A sample of 6-bromo-1-cyano-3-methyl-3H-dibenz[f,ij]isoquinoline-2,7-dione (36.5 g of 96% assay material - 35.0 g pure material, 0.10 m) prepared is in Example 2, p-aminophenylethanol (55.0 g), potassium carbonate (10.0 g), cupric acetate (12.0 g) and N,N-dimethylformamide (100 ml) were mixed and heated at about 70° C. for 1 hr. The temperature was then increased to about 80° C. and held for 1 hr, increased to about 90° C. and held for 1 hr, increased to about 100° C. and held for 1 hr and finally increased to 110° C. and held for 2 hrs. Additional N,N-dimethylformamide (140 ml) and isopropanol (280 ml) were added at about 80° C. and the reaction mixture allowed to cool to room temperature. The product was collected by filtration, washed with isopropanol, water and again with isopropanol. After drying the product weighed 34.97 g (85.5% weight yield) and was determined to have an assay of 95.2% by high pressure liquid chromatography to give an assay yield of 0.952×0.855×100 or 81.3% of 1-cyano-6-[4-(2-hydroxyethyl)anilino]-3-methyl-3H-dibenz[f,ij]isoquinoline-2,7-dione. The product as produced was very pure and did not require further purification by recrystallization. The overall percent assay yield for the three steps, based on starting with 1-methylamino-4-bromoanthraquinone, was 0.97×0.844×0.813×100 or 66.6%.

1. additionwere mixed
2. temperatureThe temperature was then increased to about 80° C.
3. temperatureincreased to about 90° C.
4. waitheld for 1 hr
5. temperatureincreased to about 100° C.
6. waitheld for 1 hr
7. temperaturefinally increased to 110° C.
8. waitheld for 2 hrs
9. temperatureto cool to room temperature
10. filtrationThe product was collected by filtration
11. washwashed with isopropanol, water and again with isopropanol
12. customAfter drying the product
13. custom34.97 g (85.5% weight yield)