申请人:Ciba-Geigy AG
公开号:US04250102A1
公开(公告)日:1981-02-10
The invention relates to a process for the manufacture of an aminohydroxyanthraquinone of the formula ##STR1## wherein both of X are hydrogen or one X is --NH.sub.2 and the other is --OH and Z is hydrogen, C.sub.1 -C.sub.4 alkyl or carboxyl, with the proviso that, if Z is C.sub.1 -C.sub.4 alkyl or carboxyl, both of X must be hydrogen, which process comprises reacting a nitroanthraquinone of the formula ##STR2## wherein both of Y are hydrogen or one Y is --NO.sub.2 and the other is hydrogen and Z is as defined for formula (1), with the proviso that, if Z is C.sub.1 -C.sub.4 alkyl or carboxyl, both of Y must be hydrogen, in an aprotic dipolar solvent, with an alkali metal azide or alkaline earth metal azide, in the temperature range between 0.degree. and 30.degree. C. The reaction products are disperse dyes or intermediates for obtaining vat dyes and disperse dyes.
该发明涉及一种生产氨基羟基蒽醌的方法,其化学式如下:其中X均为氢或一个X为--NH₂,另一个为--OH,Z为氢,C₁-C₄烷基或羧基,但如果Z为C₁-C₄烷基或羧基,则X必须均为氢。该方法包括在无极性偶极溶剂中,将化学式如下的硝基蒽醌与碱金属叠氮化物或碱土金属叠氮化物反应,反应温度在0℃至30℃之间。反应产物为分散染料或用于制备靛染料和分散染料的中间体。