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Chemistry of Natural Compounds

, Volume 9, Issue 1, pp 22–24 | Cite as

Ultraviolet absorption of flavonoids IV. Protonation constants of some monohydroxy flavones

  • N. N. Pogodaeva
  • N. A. Tyukavkina
Article

Summary

1. The protonation constants of flavone, 3-hydroxyflavone and its methyl ether, and 7-, 5-, and 4′-hydroxyflavones have been determined by a spectrophotometric method.

2. It has been shown that the basicities of the monohydroxyflavones change fundamentally according to the position of electron-donating substituents in the molecule.

Keywords

Flavone Anisole Methyl Ether Chromones Protonation Constant 

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Copyright information

© Plenum Publishing Corporation 1975

Authors and Affiliations

  • N. N. Pogodaeva
  • N. A. Tyukavkina

There are no affiliations available

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