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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 39, 2009 - Issue 23
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Original Articles

Simple and Practical Procedure for the Preparation of Benzofurazan-N-oxides in the Presence of Cyclodextrin in Neutral Condition

Tao Sun School of Chemistry and Chemical Engineering, Shandong University, Jinan, China
,
Aiyou Hao School of Chemistry and Chemical Engineering, Shandong University, Jinan, ChinaCorrespondence[email protected]
,
Jian Shen School of Chemistry and Chemical Engineering, Shandong University, Jinan, China
&
Liqiang Song School of Chemistry and Chemical Engineering, Shandong University, Jinan, China
Pages 4309-4314 | Received 16 Dec 2008, Published online: 29 Oct 2009
 
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Abstract

A simple and practical procedure for the aqueous-phase preparation of benzofurazan-N-oxides has been developed in the presence of cyclodextrin at room temperature in neutral condition for the first time. Organic solvent can be precluded for the application of cyclodextrin, which can be recovered and reused in subsequent reactions without loss of activity. The reaction mechanism was studied based on the complexation of cyclodextrin and o-nitroaniline, which was proved by 1H NMR and IR spectroscopy.

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