1-Amino-anthraquinone prepn from 1-nitroanthraquinone - by catalytic redn. in an organic solvent

The prepn. of 1-aminoanthraquinone (I) by catalytic redn. of 1-nitroanthraquinone (II) with H2 is carried out in an inert solvent comprising an aromatic, aliphatic, araliphatic or cycloaliphatic hydrocarbon (opt. halo-substd. in the aromatic ring) an ether, a ketone, and alcohol or an ester. (I) is...

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Bibliographic Details
Main Authors VOGEL,AXEL,DR, SCHENK,NORBERT,DR, AUGE,WOLFGANG,DR, THIEM,KARL-WERNER,DR, ZIEMANN,HEINZ,DR
Format Patent
LanguageEnglish
German
Published 03.04.1975
Edition2
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Summary:The prepn. of 1-aminoanthraquinone (I) by catalytic redn. of 1-nitroanthraquinone (II) with H2 is carried out in an inert solvent comprising an aromatic, aliphatic, araliphatic or cycloaliphatic hydrocarbon (opt. halo-substd. in the aromatic ring) an ether, a ketone, and alcohol or an ester. (I) is an inter. for anthraquinone dyes. The reaction leads directly to (I) (c.f. the use of H2SO4 or amides as solvent); the solvents do not impair the activity of the catalyst or cause corrosion problems.
Bibliography:Application Number: DE19732348102