Nitric Acid → 1-Nitroanthraquinone

Participants

Reaction Steps

21 g of anthraquinone are introduced into 100 ml of 98 % HNO3 at 20° and the mixture is stirred at this temperature for 8 minutes. 50 ml of sulpholan are then added, the temperature rising to 53°. 40 ml of 98 % HNO3 are distilled off at 35°/10 mm, a further 50 ml of sulpholan are added, the reaction mixture is filtered at 40° and the precipitate is washed with a small quantity of sulpholan and then with water. After drying, 13.9 g of 1-nitro-anthraquinone are obtained, having the following composition:

Provenance & Evidence