Synthesis and reactions of furo[3,2-c]quinolines and furo[3,2-c]coumarins

摘要

As a continuation of our studies on the synthesis and reactivity of pyrrolo- and furano-2,3-dione,we reported that quinoline-2,4-dione reacted with oxalyl chloride to afford oxazolo[3,2-a]quinolone.Prompted by these results,we investigated the reaction of oxalyl chlorride with N-substituted quinolones 1a,b and 4-hydroxycoumarin 1c.