Water → 1-Aminoanthraquinone

Participants

Reaction Conditions

Reaction Steps

Mixtures of each 5.0 parts of 5-nitro-1,4,4a,9a-tetrahydroanthraquinone with 30 parts of water, 70 parts of methylcellosolve and reducing agents and basic compounds, of kinds and in amounts as indicated in the following Table 4, were stirred at 90°-100°C for times, as indicated in the Table 4, then cooled to 40°C and filtered to recover crystals. The crystals were washed with water and dried under reduced pressure. In all of these Examples, the products were confirmed by infrared absorption spectrum to be 1-aminoanthraquinone. The yields of 1-aminoanthraquinone obtained in the form of crystals were as shown in the Table 4.

Provenance & Evidence