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
Revue
Chem. - A Eur. J.
Volume
8
Pagination
1196–1204
ISSN
0947-6539
Soumis le 15 juin 2018