Hydrogen Sulfide → 1-Aminoanthraquinone

Participants

Reaction Conditions

Reaction Steps

A mixture of 5.0 parts of 5-nitro-1,4,4a,9a-tetrahydroanthraquinone with 50 parts of pyridine was stirred at 90°C for 2 hours with introducing thereinto 0.8 parts/hour of gaseous hydrogen sulfide. The reaction mixture was then cooled to 25°C and added with 50 parts of water to precipitate crystals. The crystals were recovered by filtration, washed with water and dried under reduced pressure to obtain 3.9 parts of 1-aminoanthraquinone.

Provenance & Evidence