Abstract
Different kinds of Hantzsch ester 1,4‐dihydropyridines were oxidatively aromatized to their corresponding pyridine derivatives by KBrO3/SnCl4 · 5H2O system in refluxing CH3CN. The products were obtained in high to excellent yields.
Acknowledgment
The authors gratefully acknowledge the financial support of this work by the Research Council of Urmia University.