Electron spin resonance study of the photoreduction and organometallic adducts of some substituted γ-pyrones

Radical intermediates obtained in the photoreduction of 2,6-dimethyl-γ-pyrone, γ-pyrone-2,6-dicarboxylic acid and its anion have been identified by the ESR technique. Persistent secondary radicals were observed in the chelidonic acid system. While carbon centred radicals add to the ethylenic bond of...

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Bibliographic Details
Published in:Spectrochimica acta. Part A: Molecular spectroscopy 1985, Vol.41 (8), p.955-957
Main Author: Adeleke, Babatunde B.
Format: Article
Language:English
Subjects:
Atomic and molecular physics
Electron resonance and relaxation
Exact sciences and technology
Molecular properties and interactions with photons
Physics
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Summary:Radical intermediates obtained in the photoreduction of 2,6-dimethyl-γ-pyrone, γ-pyrone-2,6-dicarboxylic acid and its anion have been identified by the ESR technique. Persistent secondary radicals were observed in the chelidonic acid system. While carbon centred radicals add to the ethylenic bond of the heterocyclic compounds, organometallic radicals preferentially add to the oxygen of the carbonyl group.
ISSN:0584-8539
DOI:10.1016/0584-8539(85)80056-8