Title:
ANTHRAQUINONE COLORING MATERIAL
Document Type and Number:
Japanese Patent JPS60228565
Kind Code:
A
Abstract:
NEW MATERIAL:An anthraquinone compound of the formula (where X is H, a halogen, an alkyl, an alkoxyl, amino, nitro or -CH=CH-CH=CH-; Y is H, a halogen, an alkyl or an alkoxyl).
EXAMPLE: 6-Hydroxy-8-thia-13-aza-naphtho[2,3a]-5,14-anthraquinone [II].
PREPARATION: A solution of 2-aminothiophenol and potassium hydroxide in ethanol is added to a solution of 2-bromoquinizarine in ethanol. The reaction product is recrystallized from ethanol to give 2-(2'-aminophenylthio)quinizarine. This compound is dispersed in o-dichorobenzene and, in the presence of anhydrous zinc chloride, is caused to react by heating to give a cyclic product, which is recrystallized from chloroform to obtain the objective compound [II].
Inventors:
EDOKORO SOUTAROU
ITOU MASAKI
MATSUOKA MASARU
ITOU MASAKI
MATSUOKA MASARU
Application Number:
JP8525584A
Publication Date:
November 13, 1985
Filing Date:
April 27, 1984
Export Citation:
Assignee:
NIPPON ELECTRIC CO
International Classes:
C09B5/60; (IPC1-7): C09B5/60
Attorney, Agent or Firm:
Uchihara Shin