The Library
Silica-supported imine palladacycles—recyclable catalysts for the Suzuki reaction?
Tools
Tools
Tools
Bedford, Robin B., Cazin, Catherine Catherine Suzanne Julienne, Hursthouse, Michael B., Light, Mark E., Pike, Kevin J. and Wimperis, Stephen. (2001) Silica-supported imine palladacycles—recyclable catalysts for the Suzuki reaction? Journal of Organometallic Chemistry, Vol.633 (No.1-2). pp. 173-181. ISSN 0022328X
Full text not available from this repository.
Official URL: http://dx.doi.org/10.1016/S0022-328X(01)01080-4
Abstract
Silica-supported, imine-based palladacyclic catalysts have been synthesised and the crystal structure of complex 9, the triphenylphosphine adduct of the pre-supported precursor complex 8, has been determined. The solid-supported catalysts show considerably lower activity in the Suzuki reaction than their homogeneous counterparts. Poor recyclability of the silica-immobilised catalysts and the presence of active catalysts in solution indicate that imine-based palladacyclic catalysts are unstable with respect to liberation of zero-valent palladium species. Whilst the solid-supported complexes are not useful as catalysts, they do function as excellent mechanistic probes. Studies on model complexes give further information on the processes that cause the liberation of zero-valent species not only from the solid-supported catalysts, but also from homogeneous systems. In all cases it appears that a reductive-elimination event occurs to generate the active catalyst.
| Item Type: | Journal Article |
|---|---|
| Subjects: | Q Science > QD Chemistry |
| Divisions: | Faculty of Science > Physics |
| Library of Congress Subject Headings (LCSH): | Catalysis, Silica, Organometallic chemistry, Organic reaction mechanisms, Palladium catalysts |
| Journal or Publication Title: | Journal of Organometallic Chemistry |
| Publisher: | Elsevier S.A. |
| ISSN: | 0022328X |
| Date: | August 2001 |
| Volume: | Vol.633 |
| Number: | No.1-2 |
| Page Range: | pp. 173-181 |
| Identification Number: | 10.1016/S0022-328X(01)01080-4 |
| Status: | Peer Reviewed |
| Funder: | Engineering and Physical Sciences Research Council (EPSRC) |
| Grant number: | GR/M12209 (EPSRC) |
| URI: | http://wrap.warwick.ac.uk/id/eprint/36516 |
Actions (login required)
 |
View Item |
