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    An aqueous medium synthesis and tautomerism study of 3(5)-amino-1,2,4-triazoles

    163694_163694.pdf (217.3Kb)
    Access Status
    Open access
    Authors
    Dolzhenko, Anton
    Pastorin, G.
    Dolzhenko, A.
    Chui, W.
    Date
    2009
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Dolzhenko, Anton and Pastorin, Giorgia and Dolzhenko, Anna and Chui, Wai. 2009. An aqueous medium synthesis and tautomerism study of 3(5)-amino-1,2,4-triazoles. Tetrahedron Letters. 50 (18): pp. 2124-2128.
    Source Title
    Tetrahedron Letters
    DOI
    10.1016/j.tetlet.2009.02.172
    ISSN
    0040-4039
    School
    School of Pharmacy
    Remarks

    NOTICE: This is the author's version of a work that was accepted for publication in Tetrahedron Letters. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Tetrahedron Letters, 50, 18, 2009. DOI: 10.1016/j.tetlet.2009.02.172

    URI
    http://hdl.handle.net/20.500.11937/46409
    Collection
    • Curtin Research Publications
    Abstract

    A catalyst-free highly efficient synthesis of 3(5)-amino-5(3)-(het)aryl-1,2,4-triazoles in aqueous mediumwas performed using conventional heating and microwave irradiation. The tautomerism in the productswas investigated using NMR spectroscopy and X-ray crystallography. The effects of the substitution, temperature, solvents, and concentration on the tautomerism were studied. The triazoles were found to exist in 1H-forms, the 4H-form was not observed either in solid state or in solution. In general, 5-amino-1,2,4-triazoles were electronically preferred in the tautomeric equilibrium, but some exceptions from theestablished relationship were also identified.

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