The PPh3-Substituted Hydroxycyclopentadienyl Ruthenium Hydride [2,5-Ph2-3,4-Tol2(η5-C4COH)]Ru(CO)(PPh3)H Is a More Efficient Catalyst for Hydrogenation of Aldehydes
| Autor: | Neil A. Strotman, Thomas E. Vos, Jeffrey B. Johnson, Babak Khodavandi, Sharon E. Beetner, David C. Priebe, Ilia A. Guzei, Charles P. Casey |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
chemistry.chemical_classification
Hydrogen Shvo catalyst Hydride Organic Chemistry chemistry.chemical_element Hydroxycyclopentadienyl ruthenium hydride Aldehyde Medicinal chemistry Inorganic Chemistry Benzaldehyde chemistry.chemical_compound chemistry Deuterium Organic chemistry Physical and Theoretical Chemistry Efficient catalyst |
| Zdroj: | Organometallics. 25:1230-1235 |
| ISSN: | 1520-6041 0276-7333 |
| Popis: | The phosphine-substituted hydroxycyclopentadienyl ruthenium hydride [2,5-Ph2-3,4-Tol2(η5-C4COH)]Ru(CO)(PPh3)H (8) displayed behavior significantly different from that of the dicarbonyl analogue, including the failure to form an unreactive diruthenium complex analogous to the Shvo catalyst 5. Complex 8 shows no apparent reduction of aldehydes in the absence of a trap but exchanges deuterium between the hydride of 8-RuDOD and the aldehydic hydrogen of p-tolualdehyde. This provides evidence that aldehyde reduction by 8 occurs but is reversible. 8 catalyzes the hydrogenation of benzaldehyde under mild temperature and pressure conditions. A rate law of −d[RCHO]/dt = k[RCHO][8][H2]0 was obtained. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|