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US 4,382,034 AGranted
Process for the preparation of dianthraquinonylamines
AssigneeBayer Aktiengesellschaft
InventorsKarl-Julius Reubke, Josef Stawitz
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Abstract
Process for the preparation of dianthraquinonylamines, characterized in that an optionally substituted nitroanthraquinone is reacted with an optionally substituted aminoanthraquinone in the presence of a basic-reacting alkaline earth metal compound at an elevated temperature.
Claims8
Process for the preparation of dianthraquinonylamines, characterised in that an optionally substituted nitroanthraquinone is reacted with an optionally substituted aminoanthraquinone in the presence of calcium oxide at an elevated temperature and in the absence of copper or copper compounds.
Dependencies are inferred from the claim text.