Acetic Acid → 1-Aminoanthraquinone

Participants

Reaction Steps

To a three-necked round-bottomed flask equipped with stirrer and reflux condenser was added 5 g (0.014 mole) 1-aminoanthraquinone-2-carboxylic acid, 1 g (0.0037 mole) zinc powder, and 40 ml of 90% acetic acid. The mixture was refluxed gently for 4 hours during which time carbon dioxide was evolved. The reaction mixture was then poured into 200 ml of water and the resulting mixture was heated on a steam bath for 30 minutes. The red solid which precipitated was collected by filtration and washed with water to give 3.5 g (82% yield) of more than 90% pure 1-aminoanthraquinone.

Provenance & Evidence