- Sunday, February 1, 2004
- Osmium(VIII)-catalyzed oxidation of pentamethylene sulfide
- Published at:Not Found
Although pentamethylene sulfide (tetrahydrothiopyran) lacks acidic hydrogen, Os-VIII has been found to catalyze its oxidation by alkaline K3Fe(CN)(6) to produce 3-hydroxypentamethylene sulfide as the only product. The kinetics reveal first-order dependence on ferricyanide and Os-VIII, and zero order on pentamethylene sulfide and OH-. The effects of introduced electrolytes, K4Fe(CN)(6), relative permittivity and temperature have also been studied. On the basis of kinetic evidence, a mechanism that involves anation of the osmium catalyst (sulfide/water interchange) followed by intramolecular proton abstraction, followed by an electron transfer step has been proposed and discussed.
TRANSITION METAL CHEMISTRY Volume: 29 Issue: 1 Pages: 91-95 Published: FEB 2004