| 摘要 |
Disclosed is a process for the production of alpha , alpha '-dihydroxylaminoanthraquinone or alpha -monohydroxylaminoanthraquinone from a mixture comprising at least two components selected from alpha , alpha '-dinitroanthraquinone, alpha -mononitroanthraquinone and anthraquinone, which process comprises subjecting the mixture to reduction conditions to reduce all the nitro groups of at least one nitro component, the resulting reaction mixture being treated with alkali-metal basic medium to separate the more soluble hydroxylamino compound from the other components of the reaction mixture. By the process the hydroxylamino compounds can be obtained in high purity and then be reduced to obtain the amino compounds in corresponding purity, the amino compounds being important intermediates in the dyestuffs industry.
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