9,10-Anthracenedione, 1,5-dinitro- → HCID 20474966, compound

Participants

Reaction Steps

30 parts of 1,5-dinitroanthraquinone are stirred in 300 parts of 28% strength oleum for 4 hours at 50° to 60° C. 15 parts of boric acid are then added with cooling and dissolved. The reaction mixture is then diluted with 57.5 parts of 78% sulphuric acid and 156 parts of water, while cooling is continued, and stirred for 15 hours at room temperature. The reaction mixture is discharged onto 2,000 parts of ice, and the product is filtered off with suction and washed with warm water until neutral. After the product has been stirred with 500 parts of a 10% strength aqueous pyridine solution at 90° to 100° C., filtered off with suction and washed, 16 parts of 1-hydroxy-4-amino-8-nitroanthraquinone are obtained.

Provenance & Evidence