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Palladium nanoparticles immobilized on sepiolite–cyclodextrin nanosponge hybrid: Efficient heterogeneous catalyst for ligand‐ and copper‐free C─C coupling reactions
Author(s) -
Sadjadi Samahe,
Heravi Majid M.,
Raja Maryam,
Kahangi Fatemeh Ghoreyshi
Publication year - 2018
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.4508
Subject(s) - sepiolite , chemistry , sonogashira coupling , catalysis , palladium , leaching (pedology) , copper , cyclodextrin , amine gas treating , coupling reaction , heterogeneous catalysis , chemical engineering , nanoparticle , polymer chemistry , organic chemistry , raw material , environmental science , soil science , engineering , soil water
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.