Verfahren zur Darstellung von 2-Aminochinizarin und dessen Substitutionsprodukten

2-Nitroquinizarin or a substitution product thereof is reduced to the corresponding amino compound by means of hydrogen, in presence of a reducing catalyst, such as nickel or platinum, and of a diluent. In examples, (1) 2-nitroquinizarin and (2) 1 : 3 : 4-trihydroxy-2-nitroanthraquinone are reduced with hydrogen under elevated pressure in presence of a nickel catalyst, in water. The 2-nitroquinizarin may be reduced using a platinum catalyst under ordinary pressure and alcohol or chlorobenzene may be substituted for the water.