GUILLO, Pascal; HAMELIN, Olivier; BATAT, Pinar; JONUSAUSKAS, Gediminas; MCCLENAGHAN, Nathan; MENAGE, Stéphane

doi:10.1021/ic2022159

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GUILLO, Pascal
Laboratoire de Chimie et Biologie des Métaux [LCBM - UMR 5249]

HAMELIN, Olivier
Laboratoire de Chimie et Biologie des Métaux [LCBM - UMR 5249]

BATAT, Pinar
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

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Inorganic Chemistry. 2012, vol. 51, n° 4, p. 2222-2230

American Chemical Society

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In our research program aiming to develop new ruthenium-based polypyridine catalysts for oxidation we were interested in combining a photosensitizer and a catalytic fragment within the same complex to achieve catalytic light-driven oxidation. To respond to the lack of such conjugates, we report here a new catalytic system capable of using light to activate water molecules in order to perform selective sulfide oxygenation into sulfoxide via an oxygen atom transfer from H2O to the substrate with a TON of up to 197 ± 6. On the basis of electrochemical and photophysical studies, a proton-coupled electron-transfer process yielding to an oxidant Ru(IV)-oxo species was proposed. In particular, the synergistic effect between both partners in the dyad yielding a more efficient catalyst compared to the bimolecular system is highlighted.< Réduire

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Photocatalyzed Sulfide Oxygenation with Water as the Unique Oxygen Atom Source

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