Sodium Hydroxide → 1-Aminoanthraquinone

Participants

Reaction Steps

2.6 Grams (0.01 mol) of 5-nitrotetrahydroanthraquinone, 52 grams (0.013 mol) of a 1% aqueous sodium hydroxide solution, and 0.052 grams of a 5% palladium on carbon catalyst were introduced into an electromagnetic agitation-type glass reactor having an inner volume of 200 ml. Then, the atmosphere in the reactor was replaced by hydrogen, followed by hydrogenation while agitating at room temperature. When 0.015 mol of hydrogen was absorbed, the hydrogen in the system was replaced by nitrogen and then by air for oxidizing the resultant over-reduced compound while agitating for 30 minutes. The resultant reaction product was separated together with the catalyst by filtration and was dissolved in N,N-dimethylformamide for separating the catalyst by filtration. To the resultant filtrate was added water for dilution to obtain 2.1 grams of 1-aminoanthraquinone (at a yield of 93.1%). The purity of the 1-aminoanthraquinone was 98%.

Provenance & Evidence