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Benzazoles and naphthazoles

XXXIX. Synthesis of 1,5-dihetarylformazans on the basis of autooxidation of thiazolo[4,5-b]-2-pyridyl- and 2-benzothiazolylhydrazines

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Chemistry of Heterocyclic Compounds Aims and scope

Abstract

Thiazolo[4,5-b]-2-pyridylhydrazine, which like 2-benzothiazolylhydrazine, undergoes autooxidation in ethanol solution to give a symmetrical 1,5-bis(thiazolo[4,5-b]-2-pyridyl)-3-methylformazan, was synthesized. Asymmetrical 1,5-dihetarylformazans were obtained by autooxidative coupling of 2-hydrazinobenzothiazole with acetaldehyde thiazolo[4,5-b]-2-pyridylhydrazone and 5-nitro-2-pyridyl hydrazone. Formazans containing a thiazolopyridine ring have more acidic character than benzothiazolylformazans.

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Authors and Affiliations

  1. S. M. Kirov Ural Polytechnic Institute, Sverdlovsk

    N. P. Bednyagina, N. N. Gulemina, G. N. Lipunova & L. V. Saloutina

Authors
  1. N. P. Bednyagina
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  2. N. N. Gulemina
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  3. G. N. Lipunova
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  4. L. V. Saloutina
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Additional information

See [1] for communication XXXVIII.

Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, pp. 925–927, July, 1975.

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Bednyagina, N.P., Gulemina, N.N., Lipunova, G.N. et al. Benzazoles and naphthazoles. Chem Heterocycl Compd 11, 811–813 (1975). https://doi.org/10.1007/BF00497301

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  • DOI: https://doi.org/10.1007/BF00497301

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