反应详情

100 g of dinitroanthraquinone mixture of the composition described in Example 1 (A) are employed and stirred with B ml of nitrobenzene at C° C. for A hours and the precipitate is filtered off at C° C., washed with 50 ml of nitrobenzene and dried. D g of 1,7-dinitro-anthraquinone of the composition E are obtained.

1. waitfor A hours
2. filtrationthe precipitate is filtered off at C° C
3. wash, washed with 50 ml of nitrobenzene
4. customdried