A clean procedure for the synthesis of chromeno[4,3-b]benzo[f]quinoline and quinolino[4,3-b]benzo[f]quinoline derivatives in aqueous media

Article abstract of DOI:10.1246/cl.2005.1316

A short and simple synthesis of chromeno[4,3-b]benzo[f]-quinoline and quinolino[4,3-b]benzo[f]quinoline derivatives were accomplished in high yields via the reaction of N-benzilidenenaphthalen-2-amine and 4-hydroxycoumarin or 4-hydroxyquinolin-2-one in aq