A process for producing disperse dyes starting with anthraquinone compounds of the formula I ##STR1## in which one X is bromine and the other X is methylamine, or with mixtures thereof, which process comprises reacting these compounds with sulfuric acid, optionally containing SO.sub.3, in the presence of boric acid, at a temperature of between 100.degree. and 150.degree. C., to give compounds of the formula II ##STR2## in which one Y is hydroxyl and the other Y is methylamine, and n is 0.5 to 2.0, or mixtures thereof.
一种生产
分散染料的方法,起始物为公式I的
蒽醌化合物##STR1##
其中一个X是
溴,另一个X是
甲胺,或其混合物,该方法包括在
硼酸存在下,将这些化合物与含有SO.sub.3的
硫酸反应,在100℃至150℃的温度下,得到公式II的化合物##STR2##
其中一个Y是羟基,另一个Y是
甲胺,n为0.5至2.0,或其混合物。