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The role of singlet oxygen as reagent in the dye-sensitized photo-oxygenation of α-ketocarboxylic acids

✍ Scribed by Charles W. Jefford; Athanasie Exarchou; Peter A. Cadby

Publisher: Elsevier Science
Year: 1978
Tongue: French
Weight: 231 KB
Volume: 19
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(01)94748-3

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✦ Synopsis

The oxidative decarboxylation of a-ketoglutaric acid by molecular oxygen is thought to be the key step in several dioxygenase-catalyzed hydroxylations.' In general, a-ketocarboxylic acids are unreactive towards ground-state molecular oxygen. However, we have reported that singlet oxygen, generated by dye-sensitization, gives carbon dioxide and the corresponding peroxy acid which instantaneously causes decarboxylation of the starting a-keto acid (eq. 1

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