Ionisation of some flavanols and dihydroflavonols |
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| Authors: | NP Slabbert |
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| Institution: | Leather Industries Research Institute, Rhodes University, Grahamstown, South Africa |
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| Abstract: | Ionisation constants of catechin (1), robinetinidol (2), leuco-fisetinidin (3), fustin (4), dihydrorobinetin (5), dihydroquercetin (6) and a series of polyphenols are reported. The pKa values of these flavonoids are shown to fit the linear relationships between pKa, and substituent σ constant for a series of related phenols. |
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