How is 9-Methyl Acridine (CAS: 611-64-3) typically synthesized?

9-Methyl Acridine (CAS: 611-64-3) can be synthesized by the condensation of acridone with methyl acetate in the presence of an acid catalyst, such as hydrochloric acid. The reaction involves the nucleophilic substitution of the acridone ring, leading to the formation of the methylated product. The yield is typically around 70-80%, and the reaction is carried out under mild conditions to ensure high product purity.