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SBA-15-Type Organosilica with 4-Mercapto-N,N-bis-(3-Si-propyl)butanamide for Palladium Scavenging and Cross-Coupling Catalysis |
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| Authors: | El Hankari Samir El Kadib Abdelkrim Finiels Annie Bouhaouss Ahmed Moreau Joël J E Crudden Cathleen M Brunel Daniel Hesemann Peter |
| Institution: | 1. Institut Charles Gerhardt de Montpellier, équipes AM2N and MACS, Ecole Nationale Supérieure de Chimie de Montpellier, 8, rue de l'Ecole Normale, 34296 Montpellier Cedex 05 (France), Fax: (+33)?467‐1443‐53;2. Laboratoire de Chimie Physique Générale I des Matériaux, Nanomatériaux et Environnement, Université Mohammed V ‐ Agdal, Faculté des Sciences, Av. Ibn Battouta, Rabat (Maroc);3. Department of Chemistry, Queen's University, 90 Bader Lane, K7L 3N6 Kingston, Ontario (Canada);4. Instituto de Tecnologia Quimica, UPV‐CSIC–Universidad Politecnica de Valencia, Av. de los Naranjos s/n, 46022 Valencia (Spain) |
| Abstract: | This work describes the synthesis of novel functional silica materials with difunctional thiol-amide substructures and featuring regular architectures on a mesoscopic level. The functional materials were synthesised by both one-pot co-condensation and post-grafting approaches. The thiol groups confined in the matrix were found to be efficient for palladium entrapment, leading to highly active and reusable heterogeneous catalysts for Sonogashira and Suzuki-Miyaura cross-coupling reactions. This work evidences the crucial role of both the thiol precursor and the condensation degree of the silica scaffold in view of the design of stable and reusable tailor-made mesoporous catalytic silica materials. |
| Keywords: | cross‐coupling heterogeneous catalysis mesoporous materials palladium template synthesis |
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