Title:
PRPARATION OF HYDROXYANTHRAQUINONE
Document Type and Number:
Japanese Patent JPS5422357
Kind Code:
A
Abstract:
PURPOSE: To obtain the title substance of high purity useful as dyes (intermediates) in a high yield, by reacting nitroanthraquinone with a hydroxide of alkal2 (earth) metal in a solvent of tetramethylene sulfone in an anhydrous state at 130°C or above.
Inventors:
AIGA HIROSHI
KAWAKAMI MICHIO
KAWAKAMI MICHIO
Application Number:
JP8565477A
Publication Date:
February 20, 1979
Filing Date:
July 19, 1977
Export Citation:
Assignee:
MITSUI TOATSU CHEMICALS
International Classes:
C07C50/34; C07C45/00; C07C67/00; (IPC1-7): C07C49/68