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Efficient Oxidation Of 1,4-Dihydropyridines To Pyridines By KBrO3 In The Presence Of MnCl2

Author(s): Karim Akbari Dilmaghani, Behzad Zeynizadeh, Mansoor Mirzaei

4-Alkyl or aryl substituted derivatives of Hantzsch 1,4-dihydropyridine were readily oxidized by KBrO3 in the presence of MnCl2 under refluxing conditions to the corresponding pyridine derivatives in excellent yields. The catalysts used in the reaction are inexpensive and provide high yields and short time reactions.

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