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

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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.

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Authors
  1. N. N. Pogodaeva
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  2. N. A. Tyukavkina
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Additional information

Irkutsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 25–28, January–February, 1973.

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Pogodaeva, N.N., Tyukavkina, N.A. Ultraviolet absorption of flavonoids IV. Protonation constants of some monohydroxy flavones. Chem Nat Compd 9, 22–24 (1973). https://doi.org/10.1007/BF00580881

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  • DOI: https://doi.org/10.1007/BF00580881

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