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Spectral-luminescence and acid-base properties of 4,7-diaminocoumarins

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Chemistry of Heterocyclic Compounds Aims and scope

Abstract

The absorption and luminescence spectra of a series of 4,7-diaminocoumarins have been investigated in ethanol and acetonitrile solution. The pka I and pka II values for several of the compounds have been measured. It has been found that the site of primary protonation is the nitrogen atom in the 7-position, and that the second protonation reaction occurs at the lactone oxygen atom. The effects of steric and electronic factors on the spectral-luminescence and acid-base characteristics of these compounds are discussed.

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Literature Cited

  1. M. A. KirpichËnok, S. K. Gorozhankin, and I. I. Grandberg, Khim. Geterotsikl. Soedin., No. 6, 836 (1990).

    Google Scholar 

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

    Google Scholar 

  3. S. D. Joshi, V. R. Sakhardande, and S. Seshadri, Ind. J. Chem., 23B, 206 (1984).

    Google Scholar 

  4. B. N. Matoo, Trans. Faraday Soc., 52, 1184 (1956).

    Google Scholar 

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

    Google Scholar 

  6. L. A. Karandashova, N. S. Patalakha, P. B. Kurapov, M. A. KirpichËnok, S. K. Gorozhankin, I. I. Grandberg, and L. K. Denisov, Izv. Timir. Sel'sko-khoz. Akad., No. 1, 188 (1988).

    Google Scholar 

  7. J. Barltrop and J. Coyle, Excited States in Organic Chemistry [Russian translation], Mir, Moscow (1978), p. 69.

    Google Scholar 

  8. M. A. KirpichËnok, S. K. Gorozhankin, and I. I. Grandberg, Khim. Geterotsikl. Soedin., No. 7, 888 (1989).

    Google Scholar 

  9. S. Parker, Photoluminescence of Solutions [Russian translation], Mir, Moscow (1972).

    Google Scholar 

  10. S. K. Gorozhankin, M. A. KirpichËnok, N. A. Klyuev, and I. I. Grandberg, Izv. Timir. Sel'sko-khoz. Akad., No. 4, 151 (1986).

    Google Scholar 

  11. I. Ya. Bernstein and Yu. L. Kaminskii, Spectrophotometric Analysis in Organic Chemistry [in Russian], Khimiya, Leningrad (1986), p. 200.

    Google Scholar 

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Authors and Affiliations

  1. K. A. Timiryazev Agricultural Academy, Moscow

    L. A. Karandashova, M. A. KirpichËnok, D. S. Yufit, Yu. T. Struchkov & I. I. Grandberg

Authors
  1. L. A. Karandashova
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  2. M. A. KirpichËnok
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  3. D. S. Yufit
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  4. Yu. T. Struchkov
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  5. I. I. Grandberg
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 12, pp. 1610–1618, December, 1990.

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Karandashova, L.A., KirpichËnok, M.A., Yufit, D.S. et al. Spectral-luminescence and acid-base properties of 4,7-diaminocoumarins. Chem Heterocycl Compd 26, 1338–1345 (1990). https://doi.org/10.1007/BF00473960

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  • DOI: https://doi.org/10.1007/BF00473960

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