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SOLVENT-FREE PREPARATION OF 5-ARYLOXYTETRAZOLES via [2+3] CYCLOADDITION OF CYANATES AND SODIUM AZIDE USING SILICA SUPPORTED SULFURIC ACID AS AN EFFECTIVE HETEROGENEOUS CATALYST

F. Khamooshi, B. Haghighi, K. Jhaleh, R. Aryan, A. R. Modarresi Alam, A. R. Rezvani, A. A. Mirzaei, M. T. Maghsoodlou
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Abstract


A simple and efficient method is described for the preparation of 5-aryloxytetrazoles in excellent yields and high purity from aryl cyanates using silica sulfuric acid as catalyst. The rate of product formation was enhanced by introduction of electron-donating substituents. The 1H NMR spectral characteristics of the products also are discussed.

How to Cite
Khamooshi, F.; Haghighi, B.; Jhaleh, K.; Aryan, R.; Modarresi Alam, A. R.; Rezvani, A. R.; Mirzaei, A. A.; Maghsoodlou, M. T. Chem. Heterocycl. Compd. 2014, 49, 1464. [Khim. Geterotsikl. Soedin. 2013, 1578.]

For this article in the English edition see DOI 10.1007/s10593-014-1397-3


Keywords


aryl cyanates; 5-aryloxytetrazoles; azides; silica sulfuric acid

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