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US 2008/0139830 A1Published application
Preparation of substituted aminoanthraquinones
AssigneeLANXESS Deutschland GmbH
InventorHorst Berneth
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Abstract
Process for preparing substituted aminoanthraquinones by reacting 1,4-di-hydroxyanthraquinone with amines in the presence of dihydro-1,4-dihydroxyanthraquinone and a boric ester.
Claims14
A Process for preparing substituted aminoanthraquinones by reacting 1,4-di-hydroxyanthraquinone with amines in the presence of dihydro-1,4-dihydroxyanthraquinone and a boric ester.
Dependencies are inferred from the claim text.