Abstract
A new Schiff's base and 2-azetidinone derivatives obtained via the corresponding 3-benzo [4,5] imidazo [2,1-b] thiazol-3-yl-chromen-2-one by Vilsmeier–Haack formylation scaffold is described. Our design is aimed at obtaining new triheterocyclic and tetraheterocyclic derivatives.
ACKNOWLEDGMENTS
This research work is financially supported by the University Grant Commission (UGC), New Delhi [Ref. No. 33–296/2007 (SR)]. Dr. K. M. Hosamani is indebted to the British Commonwealth Scholarship Commission, UK [Ref. No. INCF-2008–68].