Selective semi-hydrogenation of internal alkynes catalyzed by Pd–CaCO3 clusters
The de-novo synthesis of soluble or solid-supported Pd-(CaCO3)n clusters (n = 2–13) and their high cat- alytic activity for the semi-hydrogenation of internal alkynes compared to terminal alkynes, is presented. Mechanistic studies show that this reactivity, i.e. internal alkynes more reactive than t...
| Autores: | , , , |
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| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2022 |
| País: | España |
| Recursos: | Universidad Politécnica de Cartagena(UPCT) |
| Repositorio: | Repositorio Digital UPCT |
| OAI Identifier: | oai:repositorio.upct.es:10317/13336 |
| Acesso em linha: | http://hdl.handle.net/10317/13336 https://www.sciencedirect.com/science/article/pii/S0021951722000665?via%3Dihub |
| Access Level: | acceso abierto |
| Palavra-chave: | Metal clusters Semi-hydrogenation Lindlar catalyst Química-Física 2508 Hidrología |
| Resumo: | The de-novo synthesis of soluble or solid-supported Pd-(CaCO3)n clusters (n = 2–13) and their high cat- alytic activity for the semi-hydrogenation of internal alkynes compared to terminal alkynes, is presented. Mechanistic studies show that this reactivity, i.e. internal alkynes more reactive than terminal alkynes, comes from the higher electrophilicity of the Pd-(CaCO3)n cluster compared to the nanoparticulated Lindlar catalyst, which unveils the advantages of isolating the minimum catalytic unit of a solid catalyst. Translating solid active sites into soluble catalysts turns around the classical approach and constitutes a paradigmatic shift in catalyst design. |
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