Process for producing high purity methoxyanthraquinones

Details Process for producing high purity methoxyanthraquinones Process for producing high purity methoxyanthraquinones

1977-03-07

1978-03-21

Shaver, Paul F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 4968

Patent

active

040803708

ABSTRACT:
Methoxyanthraquinones are produced from the corresponding nitroanthraquinones by reacting a nitroanthraquinone with methanol and an alkali in a reaction medium chiefly comprising methanol at a temperature of 50.degree.-130.degree. C under atmospheric or superatmospheric pressure in the presence of molecular oxygen wherein the dissolved oxygen concentration of the reaction medium is maintained at a value of at least 1 ppm.

REFERENCES:
patent: 3892784 (1975-07-01), Elser et al.

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