Solid state and crystalline state-specific (ω→α) photoisomerization-linked dioxygenation reaction of (ω-substituted alkyl)cobalt complexes

A unique tandem reaction ((ω→α) photoisomerization-linked dioxygen insertion to Co–C bond) was found to occur to afford (α-substituted alkylperoxy)bis(diphenylglyoximato)(L)cobalt(III) complexes, when (ω-substituted alkyl)bis(diphenylglyoximato)(L)cobalt(III) complexes were irradiated with visible l...

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Published inTetrahedron letters Vol. 53; no. 48; pp. 6552 - 6556
Main Authors Ohgo, Yoshiaki, Shimizu, Hiroo, Saigoh, Yoshitaka, Ikeda, Kohsuke, Komori-Orisaku, Keiko, Arai, Yoshifusa, Hamada, Keisuke
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 28.11.2012
Subjects
Cobaloxime
Cobalt complex
Dioxygen insertion
Photoreaction
Solid state and crystalline state reaction
Cobaloxime
Dioxygen insertion
Cobalt complex
Solid state and crystalline state reaction
Photoreaction
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Summary:A unique tandem reaction ((ω→α) photoisomerization-linked dioxygen insertion to Co–C bond) was found to occur to afford (α-substituted alkylperoxy)bis(diphenylglyoximato)(L)cobalt(III) complexes, when (ω-substituted alkyl)bis(diphenylglyoximato)(L)cobalt(III) complexes were irradiated with visible light under an aerobic condition in the solid and crystalline state. The reaction proceeds efficiently, when the substituent has a character to stabilize the radical at the carbon attached and also to destabilize the Co–C bond of the intermediate α-substituted alkyl cobalt complexes.
ISSN:0040-4039
1873-3581
DOI:10.1016/j.tetlet.2012.09.093