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Hammett Spectral Correlations in Benzofuranyl Flavonols

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Abstract:

A series containing eleven benzofuranyl flavonols have been prepared by cyclization of 3-hydroxybenzofuranyl chalcones with 30% hydrogen peroxide in the presence of sodium bicarbonate. The synthesized flavonols were characterized by their physical constants, analytical and spectroscopic data. The infrared spectral νOH, CO stretches(cm-1), NMR chemical shifts of OH, CO(δ, ppm) of these flavonols were assigned and correlated with Hammett substituent constants, F and R parameters using single and multi linear regression analysis. From the results of statistical analyses, the effects of substituents on the above group frequencies were discussed.

Info:

Periodical:
International Letters of Chemistry, Physics and Astronomy (Volume 25)
Pages:
39-47
DOI:
10.18052/www.scipress.com/ILCPA.25.39
Citation:
G. Thirunarayanan and K.G. Sekar, "Hammett Spectral Correlations in Benzofuranyl Flavonols", International Letters of Chemistry, Physics and Astronomy, Vol. 25, pp. 39-47, 2014
Online since:
Jan 2014
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