An expedient synthesis of unusual oxoisoaporphine and annelated quinoline derivatives

Abstract

Several 2,3-dihydro-7H-dibenzo[de,h]quinolin-7-ones and 7H-dibenzo[de,h]quinolin-7-ones were catalytically hydrogenated over PtO2 in acetic acid to afford 7-hydroxyquinolinc and quinolone derivatives with reduced benzene rings.