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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Main Authors | , , , , |
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Format | Patent |
Language | English German |
Published |
03.04.1975
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Edition | 2 |
Subjects | |
Online Access | Get full text |
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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. |
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Bibliography: | Application Number: DE19732348102 |