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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 31, 2001 - Issue 13
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Original Articles

OXIDATION OF URAZOLES TO THEIR CORRESPONDING TRIAZOLINEDIONES UNDER MILD AND HETEROGENEOUS CONDITIONS VIA IN SITU GENERATION OF NO+IOX−

Mohammad Ali Zolfigol Chemistry Department, College of Science, Bu-Ali Sina University, Hamadan, 65174, IranCorrespondence[email protected]
,
Gholamabbas Chehardoli Chemistry Department, College of Science, Bu-Ali Sina University, Hamadan, 65174, Iran
,
Farhad Shirini Chemistry Department, College of Science, Gilan University, Rasht, I.R., Iran
,
Shadpour E. Mallakpour Organic Polymer Chemistry Research Laboratory, College of Chemistry, Isfahan University of Technology, Isfahan, I.R., 84156, Iran
&
Hossein Nasr-Isfahani Organic Polymer Chemistry Research Laboratory, College of Chemistry, Isfahan University of Technology, Isfahan, I.R., 84156, Iran
Pages 1965-1970 | Received 10 Apr 2000, Published online: 09 Nov 2006
 
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Abstract

A combination of periodic or iodic acids and sodium nitrite in the presence of wet SiO2 was used as an effective oxidizing agent for the oxidation of urazoles and bis-urazoles to their corresponding triazolinediones under mild and heterogeneous conditions with good yields.

ACKNOWLEDGMENT

Financial support for this work by the research affair of Bu-Ali Sina University, Hamadan, Iran, is gratefully acknowledged.

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