Title:
MANUFACTURE OF DIMETHOXYANTHRAQUINONE
Document Type and Number:
Japanese Patent JPS55104224
Kind Code:
A
Abstract:
Dimethoxyanthraquinones can be prepared in high purity and in good yield in an economic manner which does not pollute the environment when 1 part by weight of dinitroanthraquinone is reacted with 2-8 parts by weight of methanol and 0.5-1.5 parts by weight of potassium hydroxide until all of the nitro groups have been replaced; the reaction is preferably carried out in the presence of 0.05-0.5 part by weight of amidosulphonic acid.
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Inventors:
HERUMUUTO ZAIDORAA
GIYUNTAA GEERUKE
GIYUNTAA GEERUKE
Application Number:
JP889180A
Publication Date:
August 09, 1980
Filing Date:
January 30, 1980
Export Citation:
Assignee:
BAYER AG
International Classes:
C07C45/00; C07C46/00; C07C50/28; C07C50/34; C07C67/00; (IPC1-7): C07C46/00; C07C50/34
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