Chemistry of Natural Compounds

, Volume 5, Issue 4, pp 184–188 | Cite as

The polarography of coumarins in alcoholic-aqueous media. I

  • Yu. E. Orlov
  • A. P. Prokopenko
Article

Conclusions

1. The natural coumarin derivatives psoralen and angelicin are reduced at the DME from the adsorbed state at the mercury-solution boundary at the position of the 3,4-double bond of the α-pyrone ring. The latter circumstance confirms the ethylenic nature of this bond.

2. The existence of the processes of the protonation of the coumarin molecules in acid media and of the opening of the lactone ring in alkaline media has been shown experimentally.

3. The investigations performed show that the plarographic method can be used in the study of the physiochemical properties of the natural coumarins and for their quantitative analysis.

Keywords

Coumarin Coumarin Derivative Drop Mercury Electrode Umbelliferone Imperatorin 

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Copyright information

© Consultants Bureau 1972

Authors and Affiliations

  • Yu. E. Orlov
  • A. P. Prokopenko
    • 1
  1. 1.Khar'kov Chemical and Pharmaceutical Scientific-Research InstituteUSSR

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