Graphite oxide mediated oxidative aromatization of 1,4-dihydropyridines into pyridine derivatives

A new approach utilizing graphite oxide as an oxidizing agent is applied for the oxidative aromatization of 1,4-dihydropyridines. Graphite oxide efficiently aromatized Hantzsch 1,4-dihydropyridines into their corresponding pyridine derivatives in excellent yields. The reaction was carried out in toluene at 100 degrees C. (C) 2012 Elsevier Ltd. All rights reserved.