Mechanisms of the H2-hydrogenation and transfer hydrogenation of polar bonds catalyzed by ruthenium hydride complexes
| Autor: | Robert H. Morris, Sean E. Clapham, Alen Hadzovic |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Hydride
Imine Noyori asymmetric hydrogenation chemistry.chemical_element Inner sphere electron transfer Photochemistry Transfer hydrogenation Ruthenium Inorganic Chemistry chemistry.chemical_compound chemistry Polymer chemistry Materials Chemistry Outer sphere electron transfer Physical and Theoretical Chemistry Bifunctional |
| Zdroj: | Coordination Chemistry Reviews. 248:2201-2237 |
| ISSN: | 0010-8545 |
| DOI: | 10.1016/j.ccr.2004.04.007 |
| Popis: | The catalytic cycles for the H2-hydrogenation (H) and transfer hydrogenation (T) of CO and CN bonds catalyzed by over 100 ruthenium hydride complexes in organic and aqueous media can be classified into two main classes: the hydride transfer step is inner sphere (I) or outer sphere (O). Important subclasses of these mechanisms are cases where an ancillary ligand may assist in the hydride transfer step (IL or OL, respectively). The types of hydride complexes and their reactivity toward CO (ketones, aldehydes, CO2) and CN (imines) bonds is examined. Features of the different types of catalytic cycles are described. It is clear that the ligand assisted cases lead to very efficient catalysts for the selective hydrogenation of these polar bonds (e.g. Noyori’s metal–ligand bifunctional catalysis). |
| Databáze: | OpenAIRE |
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