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Polymer-Supported Bis-1,2,4-triazolium ionic tag framework for an efficient Pd(0) catalytic system in biomass derived γ-valerolactone

Valentini, F ; Sharif University of Technology | 2019

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  1. Type of Document: Article
  2. DOI: 10.1021/acssuschemeng.8b06502
  3. Publisher: American Chemical Society , 2019
  4. Abstract:
  5. A resin-bound 1,2,4-triazolium ionic tag has been used as support for the preparation of solid palladium nanoparticles (Pd(0)-POLI-TAG-Pd). Owing to the pincer-type architecture of the triazolium ligand, the stabilization of a high amount of palladium nanoparticles (16 wt %) has been possible. The catalytic system has been fully characterized and used in low amounts (i.e., 0.1 mol % palladium loading) in representative Heck-Mizoroki cross-coupling processes. A negligible release of the metal was demonstrated, and a high activity was obtained over more runs. Besides, the protocol has been optimized for the use of safe biomass-derived γ-valerolactone reaction medium
  6. Keywords:
  7. Cross-coupling ; Heterogeneous catalysis ; Catalysis ; Nanoparticles ; Palladium ; Catalytic system ; Cross-couplings ; Green solvents ; Palladium loading ; Palladium nanoparticles ; Polymer-supported ; Polymeric supports ; Reaction medium ; Polymers
  8. Source: ACS Sustainable Chemistry and Engineering ; Volume 7, Issue 7 , 2019 , Pages 6939-6946 ; 21680485 (ISSN)
  9. URL: https://pubs.acs.org/doi/10.1021/acssuschemeng.8b06502