Hydrochloric Acid → 1-Aminoanthraquinone

Participants

Reaction Conditions

Reaction Steps

50 Parts of 1-hydroxylaminoanthraquinone was stirred into a mixture of 500 parts of ethyleneglycol monobutyl ether, 200 parts of water and 60 parts of a 35 % aqueous hydrochloric acid. After heated to 75°C, the mixture was added with 17 parts of iron ribbon little by little over 1 hour and maintained at 75°C for additional 3 hours. After cooled to 25°C, the reaction mixture was filtered and the residue was washed with water and extracted with 500 parts of dimethylformamide to separate the resulting 1-aminoanthraquinone from unreacted metal. The extract was distilled for removal of dimethylformamide to obtain 42.5 parts of 1-aminoanthraquinone of a purity of 93 %.

Provenance & Evidence