Sulfide oxidation by hydrogen peroxide catalyzed by iron complexes: two metal centers are better than one.
Peroxoiron species have been proposed to be involved in catalytic cycles of iron-dependent oxygenases and in some cases as the active intermediates during oxygen-transfer reactions. The catalytic properties of a mononuclear iron complex, [FeII(pb)2(CH3CN)2] (pb=(-)4,5-pinene-2,2'-bipyridine), have been compared to those of its related dinuclear analog. Each system generates specific peroxo adducts, which are responsible for the oxidn. of sulfides to sulfoxides. The dinuclear catalyst was found to be more reactive and (enantio)selective than its mononuclear counterpart, suggesting that a second metal site affords specific advantages for stereoselective catalysis. These results might help for the design of future enantioselective iron catalysts. [on SciFinder(R)]
Références
- Titre
- Sulfide oxidation by hydrogen peroxide catalyzed by iron complexes: two metal centers are better than one.
- Type de publication
- Article de revue
- Année de publication
- 2002
- Auteurs
- Mekmouche, Yasmina, Hummel Helga, Ho Raymond Y. N., Jr. Lawrence Que, Schunemann Volker, Thomas Fabrice, Trautwein Alfred X., Lebrun Colette, Gorgy Karine, Leprêtre Jean-Claude, Collomb Marie-Noelle, Deronzier Alain, Fontecave Marc, and Menage Stephane.
- Revue
- Chem. - A Eur. J.
- Volume
- 8
- Pagination
- 1196–1204
- ISSN
- 0947-6539
Soumis le 15 juin 2018