Palladium nanoparticles immobilized on sepiolite–cyclodextrin nanosponge hybrid: Efficient heterogeneous catalyst for ligand‐ and copper‐free C─C coupling reactions |
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| Authors: | Samahe Sadjadi Majid M. Heravi Maryam Raja Fatemeh Ghoreyshi Kahangi |
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| Affiliation: | 1. Gas Conversion Department, Faculty of Petrochemicals, Iran Polymer and Petrochemicals Institute, Tehran, Iran;2. Department of Chemistry, School of Science, Alzahra University, Vanak, Tehran, Iran;3. Department of Chemistry, University of Gilan, Rasht, Iran |
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| Abstract: | A novel hybrid system composed of sepiolite clay and cyclodextrin nanosponge (CDNS) was prepared via reaction of Cl‐functionalized sepiolite with amine‐functionalized CDNS. CDNS–sepiolite was then applied for immobilization of Pd(0) nanoparticles. The resulting hybrid system, Pd@CDNS‐sepiolite, was characterized using various techniques and successfully used as an efficient and heterogeneous catalyst for ligand‐ and copper‐free Sonogashira and Heck coupling reactions under mild reaction conditions. Recycling experiments confirmed that Pd@CDNS‐sepiolite was recyclable and could be used for several consecutive reaction runs with slight Pd leaching and loss of catalytic activity. |
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| Keywords: | C─ C coupling reactions cyclodextrin nanosponge Pd nanoparticles sepiolite |
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