Skip to main content
SpringerLink
Log in

4,5-Dioxo-and 4-oxo-2,3-diaryl-5-diazo-6,6-dimethyl-4,5,6,7-tetrahydroindazoles

  • Published:
Chemistry of Heterocyclic Compounds Aims and scope

Abstract

The oxidation of 2,3-diphenyl-, 3-(4-chlorophenyl)-2-phenyl-, 3-(4-dimethylaminophenyl)-2-phenyl-, 3-(4-methoxyphenyl)-2-phenyl-, 2-phenyl-3-(3-pyridyl)-, 3-phenyl-2-(2-pyridyl)-, and 3-(4-dimethylaminophenyl)-6,6-dimethyl-4-oxo-2-(2-pyridyl)-4,5,6,7-tetrahydroindazoles using H2SeO3 in acetic acid in the presence of sulfuric acid gave the corresponding 4,5-dioxo derivatives. Reaction of these with tosylhydrazine gave 4-oxo-5-tosylhydrazino derivatives which were decomposed by alkali to give the corresponding 2,3-diaryl-5-diazo-6,6-dimethyl-4-oxo-4,5,6,7-tetrahydroindazoles.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. E. Yu. Gudriniece, A. Ya. Strakov, I. A. Strakova, D. R. Zicane, and A. F. Ievin’sh, Dokl. Akad. Nauk., 216, 1293 (1974).

    CAS  Google Scholar 

  2. A. Strakov, J. Sliede, D. Zicane, and I. Strakova, Izv. Akad. Nauk Latv. SSR, Ser. Khim., 81 (1977).

  3. I. Strakova, A. Strakovs, E. Gudriniece, and I. Svarina, Izv. Akad. Nauk. Latv. SSR, Ser. Khim., 483 (1982).

  4. I. Strakova, A. Strakov, and I.. Ribalko, Izv. Akad. Nauk Latv. SSR, Ser. Khim., 229 (1983).

  5. I. A. Strakova, A. Ya. Strakov, and M. V. Petrova, Khim. Geterotsikl. Soedin., 351 (1995).

  6. A. Ya. Strakov, N. N. Tonkikh, M. V. Petrova, and I. A. Strakova, Khim. Geterotsikl. Soedin., 1669 (1997).

  7. I. A. Strakova, A. Ya. Strakov, M. V. Petrova, and L. G. Delyatitskaya, Khim. Geterotsikl. Soedin., 533 (2000).

  8. A. Strakov, J. Sliede, and I. Strakova, Izv. Akad. Nauk Latv. SSR, Ser. Khim., 469 (1976).

  9. D. R. Zicane and A. Ya. Strakov, Izv. Akad. Nauk Latv. SSR, Ser. Khim., 742 (1975).

  10. A. Ya. Strakov and M. B. Andaburskaya, Izv. Akad. Nauk Latv. SSR, Ser. Khim., 108 (1975).

  11. N. Tonkikh, H. Duddeck, M. Petrova, O. Neilands, and A. Strakovs, Eur. J. Org. Chem., 1585 (1999).

  12. I. Strakova, A. Strakovs, and M. V. Petrova, Khim. Geterotsikl. Soedin., 1662 (2005).

  13. I. Strakova, A. Strakovs, and M. V. Petrova, Khim. Geterotsikl. Soedin., 1669 (2005).

  14. M. Cava, R. Litle, and D. Hapier, J. Amer. Chem. Soc., 80, 2257 (1958).

    CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Riga Technical University, Riga, LV-1048, Latvia

    I. Strakova, A. Strakovs & M. Petrova

Authors
  1. I. Strakova
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. A. Strakovs
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. M. Petrova
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

__________

Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 12, pp. 1829–1833, December, 2005

Rights and permissions

Reprints and permissions

About this article

Cite this article

Strakova, I., Strakovs, A. & Petrova, M. 4,5-Dioxo-and 4-oxo-2,3-diaryl-5-diazo-6,6-dimethyl-4,5,6,7-tetrahydroindazoles. Chem Heterocycl Compd 41, 1507–1510 (2005). https://doi.org/10.1007/s10593-006-0028-z

Download citation

  • Received:

  • Revised:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10593-006-0028-z

Keywords

Search

Navigation