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Polycyclic Aromatic Compounds Volume 39, 2019 - Issue 2
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Articles

Oxidative Aromatization of 1,3,5-trisubstituted 2-pyrazolines Using Oxalic Acid/Sodium Nitrite System

Behrooz MalekiDepartment of Chemistry, Hakim Sabzevari University, Sabzevar, IranCorrespondence[email protected]
,
Fatemeh Barakchi TabrizyDepartment of Chemistry, Payame Noor University, Tehran, Iran
,
Reza TayebeeDepartment of Chemistry, Hakim Sabzevari University, Sabzevar, Iran
&
Mehdi BaghayeriDepartment of Chemistry, Hakim Sabzevari University, Sabzevar, Iran
Pages 93-98 | Received 07 Jun 2016, Accepted 26 Nov 2016, Published online: 03 Jan 2017
 
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ABSTRACT

Oxidative aromatization of 1,3,5-trisubstituted 2-pyrazolines by in-situ generation of NO+ from oxalic acid/sodium nitrite system has been described. The main advantages of this procedure are the use of an inexpensive and readily available catalyst, facile work-up, and improved yields in aqueous ethanol.

Funding

The authors thank the Research Council of Hakim Sabzevari University for partial support of this work.

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