నైరూప్య

Synthesis of 3(1,2-dihydro-4-hydroxy-2-oxo-3-quinolyl) furo[3,2-c] quinolin-4 (5H) ones

D.Malleshwar, K.Gautami, A.Jayashree

3,3ï‚¢-acetonylidene/ ethanalidene/ acetophynylidene bis [4-hydroxyquinolin- 2(1H) one] s are formedwhen 4-hydroxyquinolin-2(1H)onesare reactedwith glyoxals. These Compounds underwent smooth cyclodehydration in PPA to give 3(1,2-dihydro-4-hydroxy-2-oxo-3-quinolyl) furo [3,2-c] quinolin- 4(5H)ones in facilemanner.