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Article info. : 2008; 5(2) (pp 244~251)

 

Rapid and Efficient Aromatization of Hantzsch 1,4-Dihydropyridines with Potassium Peroxomonosulfate Catalyzed by Manganese(III) Schiff Base Complexes

M. Nasr-Esfahani*, M. Moghadam and G. Valipour

Department of Chemistry, Yasouj University, Yasouj 75914-353, Iran

(Received 18 January 2007, Accepted 3 August 2007)

Rapid and efficient oxidation of Hantzsch 1,4-dihydropyridine with Potassium peroxomonosulfate is reported. The Mn(III)-salophen/monopersulfate catalytic system converts 1,4-dihydropyridines to their corresponding pyridine derivatives at room temperature in a 1:1, CH3CN/H2O mixture. The ability of various Schiff base complexes in the oxidation of 1,4-dihydropyridine was also investigated.

Keywords: Biomimetic oxidation, Manganese(III) Schiff base, Oxone, 1,4-Dihydropyridine

 

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