The invention relates to a process for the manufacture of anthraquinones which are mononitrated in the .alpha.-position, especially 1-nitroanthraquinone, wherein an anthraquinone which possesses at least 1 free .alpha.-position and is optionally substituted in the other .alpha.-position with halogen, preferably chlorine, or with hydroxyl groups, but especially the unsubstituted anthraquinone, is nitrated with concentrated nitric acid without further additives adiabatically, or at temperature above 40.degree.C isothermically, and optionally under pressure.
该发明涉及一种制备在α-位单硝化的
蒽醌,特别是1-硝基
蒽醌的方法,其中拥有至少1个自由α-位并在另一个α-位可选择地用卤素,特别是
氯,或羟基取代的
蒽醌,尤其是未取代的
蒽醌,通过在无需进一步添加剂的条件下绝热地用浓
硝酸硝化,或在40°C以上的等温条件下,可选地在压力下硝化。