| Autor: |
Slagt Mq, Jaap Boersma, Meijer, Geus Jw, van Koten G, Spee Mp |
| Rok vydání: |
2001 |
| Předmět: |
|
| Zdroj: |
The Journal of organic chemistry. 66(5) |
| ISSN: |
0022-3263 |
| Popis: |
Silica-supported, bimetallic palladium-copper catalysts were prepared in solution under mild conditions by reacting lithium di(4-tolyl)cuprate with palladium acetate in the presence of silica particles. Small bimetallic palladium-copper particles were deposited on the silica surface as confirmed with TEM-EDAX and EXAFS. The new material has been applied as catalyst in the liquid-phase semihydrogenation of mono- and disubstituted alkynes and showed high selectivity toward the cis-alkenes. The influence of addition of quinoline or potassium hydroxide to the semihydrogenation reaction mixture and the effects of exposure of the catalyst to air before use have been investigated. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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