Process for preparing 1-amino-4-hydroxyanthraquinones

1-Amino-4-hydroxyanthraquinones are prepared by reacting 1,4-dihydroxyanthraquinone with aliphatic or aromatic amine in the presence of N-methyl-2-pyrrolidone. Preparation of 1-amino-4-hydroxyanthraquinones of formula (I) involves reacting 1,4-dihydroxyanthraquinone, optionally as a mixture with 2,3...

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