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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 37, 2007 - Issue 11
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Original Articles

Silica Chromate as a Novel Oxidizing Agent for the Oxidation of 1,4‐Dihydropyridines

Mohammad Ali Zolfigol Faculty of Chemistry, Bu‐Ali Sina University, Hamadan, IranCorrespondence[email protected]
,
Peyman Salehi Department of Chemistry, Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, Evin, Tehran, Iran
,
Arash Ghorbani-Choghamarani Department of Chemistry, Faculty of Science, Ilam University, Ilam, Iran
,
Maliheh Safaiee Faculty of Chemistry, Bu‐Ali Sina University, Hamadan, Iran
&
Mozhgan Shahamirian Faculty of Chemistry, Bu‐Ali Sina University, Hamadan, Iran
Pages 1817-1823 | Received 23 Nov 2005, Published online: 30 Jun 2007
 
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Abstract

Silica chromate easily converts 1,4‐dihydropyridines to their corresponding pyridines in the presence of NaHSO4 · H2O and wet SiO2 in dichloromethane at room temperature in good to excellent yields.

Acknowledgment

Financial support of this work by the Management and Programming Organization of Iran (award of the selection by ESI) and Research Affair, Bu‐Ali Sina University, Hamadan, Iran, is gratefully acknowledged.

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