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Electron spin resonance study of free radicals generated from retinyl- and ionyl-derivatives

Mordi, Raphael C. and Walton, John C. (1990) Electron spin resonance study of free radicals generated from retinyl- and ionyl-derivatives. Chemistry and Physics of Lipids, 54 (1).

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Abstract

Free radicals generated from α- and β-ionyl bromides gave well resolved ESR spectra, but retinyl bromide and chloride gave only broad signals. Delocalised radicals were also spectrosopically observed on hydrogen abstraction from α-ionane, α-ionyltrimethylsilylether and buten-3-ynyl-2,6,6-trimethyl-2-cyclohexene. Retinyl and β-ionyl radicals, derived from the corresponding xanthates, were successfully spin trapped with nitrosodurene. The results suggested that the secondary sites C(7) and C(9) were the most reactive in the β-ionyl radicaland that the secondary sites C(7) and C(11) and probably the primary site C(15) were the most reactive in the retinyl radical.

Item Type: Article
Uncontrolled Keywords: electron spin resonance; • spin trapping; • retinyl derivatives; • ionyl derivatives
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Engineering, Science and Mathematics > School of Chemistry
Depositing User: Mrs Patricia Nwokealisi
Date Deposited: 24 Nov 2015 12:49
Last Modified: 24 Nov 2015 12:49
URI: http://eprints.covenantuniversity.edu.ng/id/eprint/5659

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