An efficient Pd/C aromatization of 1,2,3,4,9,10-hexahydroacridine-1,9-diones to 1-hydroxyacridones is reported. The previously reported four-step synthesis of the diones has been extended to give a number of methoxy substituted derivatives and the aromatization reaction, along with hydrobromic acid demethylation, provides a useful route to various methoxy and hydroxy substituted acridones.