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-hydroxyquinoline and quinolone derivatives with reduced benzene rings.