ABSTRACT
Synthesis of 2-substituted-4H-Pyrido[2,3-h]benzoxazin-4-ones (2) from 5-Aminoquinoline-6-carboxylic acid (1) and their conversion to 2,3-disubstituted Pyrido[2,3-h]quinazolin-4(3H)-ones(3) is reported.
ACKNOWLEDGMENT
One of the authors (TAK) is thankful to the UGC, New Delhi, for the award of a senior research fellowship.