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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 30, 2000 - Issue 3
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Original Articles

An Efficient Method for the Oxidation of Hantzsch 1,4-Dihydropyridines to their Corresponding Pyridine Derivatives Under Mild and Heterogeneous Conditions

Mohammad Ali Zolfigol Chemistry Department, College of Science, Bu-Ali Sina University, Hamadan, 65174, I.R., Iran
,
Maryam Kiany-Borazjani Chemistry Department, College of Science, Bu-Ali Sina University, Hamadan, 65174, I.R., Iran
,
Majid M. Sadeghi Chemistry Department, College of Science, Isfahan University, Isfahan, I.R., Iran
,
Iraj Mohammadpoor-Baltork Chemistry Department, College of Science, Isfahan University, Isfahan, I.R., Iran
&
Hamid Reza Memarian Chemistry Department, College of Science, Isfahan University, Isfahan, I.R., Iran
Pages 551-558 | Received 13 Apr 1999, Published online: 04 Dec 2007
 
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Abstract

A combination of oxalic acid dihydrate and sodium nitrite in the presence of wet SiO2 was used as an effective oxidizing agent for the oxidation of dihydropyridines to their corresponding pyridine derivatives at room temperature with excellent yields.

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