A Novel, Facile, Simple and Convenient Oxidative Aromatization of Hantzsch 1,4-Dihydropyridines to Pyridines Using Polymeric Iodosobenzene with KBr

[摘要]：An easy, safe, effective and handy method for oxidative aromatization of Hantzsch 1,4-dihydropyridines catalyzed by hypervalent iodine (iodosobenzene) and potassium bromide to corresponding pyridine derivatives in high-yields and within short span of time was described. Dealkylation in case of 4-n-alkyl substituted I,4-dihydropyridines was not obtained.

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