Skip to main content
Log in

Reactions of 7-aminocoumarins leading to alkylidenebenzopyrans

  • Published:
Chemistry of Heterocyclic Compounds Aims and scope

Abstract

The reaction of 7-aminocoumarins with triethyloxonium tetrafluoroborate leads to benzopyrylium salts that react with sodium derivatives of compounds that contain an active methylene group to give substituted 2-methylene-2H-1-benzopyrans. The structures and physicochemical properties of the synthesized compounds are discussed.

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

Access this article

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

Instant access to the full article PDF.

Similar content being viewed by others

Literature Cited

  1. M. A. Kirpichenok, S. L. Levchenko, and I. I. Grandberg, Khim. Geterotsikl. Soedin., No. 10, 1324 (1987).

    Google Scholar 

  2. K. Drexhage, in: Dye Lasers, ed. F. P. Schaefer, Springer Verlag, New York (1974).

    Google Scholar 

  3. G. Jones, W. R. Jackson, Ch. Choi, and W. R. Bergmark, J. Phys. Chem., 89, 294 (1985).

    Google Scholar 

  4. A. Katritzky (ed.), Advances in Heterocyclic Chemistry, Supplement 2, Academic Press, New York-London (1982), p. 434.

    Google Scholar 

  5. M. Simalty, H. Strzelecka, and H. Khedija, Tetrahedron, 27, 3503 (1971).

    Google Scholar 

  6. H. Meerwein, W. Florian, H. Schön, and G. Stopp, Annalen, 1, 1 (1961).

    Google Scholar 

  7. M. A. Kirpichenok, I. I. Grandberg, L. K. Denisov, and L. M. Mel'nikova, Izv. Timiryazevsk. Skh. Akad., No. 3, 172 (1985).

    Google Scholar 

  8. E. T. Oestensen, Acta Chem. Scand., B29, 927 (1975).

    Google Scholar 

  9. A. R. Reddy, D. V. Prasad, and M. Darbarwar, J. Photochem., 32, 69 (1986).

    Google Scholar 

  10. H. A.-E. Rafie and A. H. E.-T. Bahgat, Can. J. Chem., 63, 1173 (1985).

    Google Scholar 

  11. Weygand-Hilgetag, in: Experimental Methods in Organic Chemistry, Saunders, Philadelphia (1969).

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Additional information

Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 6, pp. 751–756, June, 1988.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Kirpichenok, M.A., Gorozhankin, S.K. & Grandberg, I.I. Reactions of 7-aminocoumarins leading to alkylidenebenzopyrans. Chem Heterocycl Compd 24, 611–616 (1988). https://doi.org/10.1007/BF00475593

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00475593

Keywords

Navigation