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2 results on '"Suzuki–Miyauracross-coupling"'

1. CeO2/Pd Nanoparticles Incorporated Fly Ash Zeolite: An Efficient and Recyclable Catalyst for Csp2‐Csp2 Bond Formation Reactions.

Author

Sheeba Thavamani, Seth, Sudharsan, Murugesan, Santhana Mariya, Anitha, Suresh, Devarajan, Jose Amali, Arlin, Rajeswari, Sanniyasi, and Peter Amaladhas, Thomas

Subjects
*FLY ash, *ARYL bromides, *HETEROGENEOUS catalysis, *CATALYTIC activity, *PALLADIUM catalysts, *ARYL chlorides, *ZEOLITES, CATALYSTS recycling
Abstract

The catalytic activity of CeO2 and palladium nanoparticles supported fly ash zeolite (CeO2/Pd@FAZ) for Csp2‐Csp2 bond formation was studied. CeO2/Pd@FAZ was characterized by FTIR, XRD, EDAX and TEM studies. In the Suzuki‐Miyauracross‐coupling reaction, biphenyl derivatives with excellent yields were obtained, and the reaction conditions were optimized. The catalytic activity was explored using a wide variety of diversely substituted aryl bromides and chlorides with aryl boronic acid under optimized reaction conditions. The recyclability of the catalyst was established for three cycles, with the conversion rate from 99 to 40%, which gained the advantage of heterogeneous catalysis. [ABSTRACT FROM AUTHOR]

Published
2020
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2. High catalytic efficiency of palladium nanoparticles immobilized in a polymer membrane containing poly(ionic liquid) in Suzuki–Miyaura cross-coupling reaction

Author

Jean-François Lahitte, Richard D. Noble, Christian Pradel, Montserrat Gómez, Douglas L. Gin, Isabelle Favier, Jean-Christophe Remigy, Yingying Gu, Laboratoire de génie chimique [ancien site de Basso-Cambo] (LGC), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées, Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Institut de Chimie de Toulouse (ICT-FR 2599), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD), University of Colorado [Boulder], Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), University of Colorado at Boulder - UCB (USA), Institut National Polytechnique de Toulouse - INPT (FRANCE), Laboratoire de Génie Chimique (LGC), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT), Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), and Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)

Subjects
inorganic chemicals, Inorganic chemistry, Batch reactor, Filtration and Separation, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, 7. Clean energy, Biochemistry, Coupling reaction, Catalysis, chemistry.chemical_compound, Reaction rate constant, [CHIM.GENI]Chemical Sciences/Chemical engineering, Génie chimique, Suzuki–Miyauracross-coupling, General Materials Science, Physical and Theoretical Chemistry, Génie des procédés, chemistry.chemical_classification, Membrane reactor, membrane reactor, Imidazolium-based ionic liquid, Polymer, 021001 nanoscience & nanotechnology, Flow-through, Palladium nanoparticles, 0104 chemical sciences, Membrane, chemistry, Ionic liquid, Catalytic membrane, 0210 nano-technology
Abstract

International audience; The elaboration of a polymeric catalytic membrane containing palladium nanoparticles is presented. The membrane was prepared using a photo-grafting process with imidazolium-based ionic liquid monomers as modifying agent and microPES® as support membrane. Ionic liquid serves as a stabilizer and immobilizer for the catalytic species, i.e. palladium nanoparticles. The Suzuki–Miyaura cross-coupling reaction was carried out on the catalytic membrane in flow-through configuration. Complete conversion was achieved in 10 s through one single filtration, without formation of byproducts. The apparent reaction rate constant was three orders of magnitude greater than in a batch reactor. No catalyst leaching was detected. This membrane offers the possibility of continuous production with no need for a separation step of the catalyst from the reaction medium.

Published
2015

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