2-Bromo-1-(1H-pyrazol-4-yl)ethanone: versatile precursors for novel mono-, bis- and poly{6-(1H-pyrazol-4-yl)-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazines}

A simple synthesis of novel mono-, bis- and poly{6-(1H-pyrazol-4-yl)-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazines} is reported. The formation of the target compounds was achieved by the reaction of 2-bromo-1-(5-methyl-1-phenyl-1H-pyrazol-4-yl)ethanone with the appropriate aminotriazolethiol or by the r...

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Bibliographic Details
Published in:Tetrahedron 2016-02, Vol.72 (5), p.712-719
Main Authors: Salem, Mostafa E., Darweesh, Ahmed F., Farag, Ahmad M., Elwahy, Ahmed H.M.
Format: Article
Language:English
Subjects:
Alkylation
Cyclocondensation
Formations
Precursors
Pyrazole
Spectroscopy
Synthesis
Tetrahedrons
Triazolothiadiazine
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Summary:A simple synthesis of novel mono-, bis- and poly{6-(1H-pyrazol-4-yl)-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazines} is reported. The formation of the target compounds was achieved by the reaction of 2-bromo-1-(5-methyl-1-phenyl-1H-pyrazol-4-yl)ethanone with the appropriate aminotriazolethiol or by the reaction of 6-pyrazolyl-7H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazine-3-thiol with the appropriate di- and poly(bromo) compounds. The structures of the newly synthesized compounds were established by spectroscopy and elemental analyses. [Display omitted]
ISSN:0040-4020
1464-5416
DOI:10.1016/j.tet.2015.12.024