Polymer-Supported Bis-1,2,4-triazolium Ionic Tag Framework for an Efficient Pd(0) Catalytic System in Biomass Derived γ-Valerolactone

Federica Valentini, Hamed Mahmoudi, Lucia Anna Bivona, Oriana Piermatti, Mojtaba Bagherzadeh, Luca Fusaro, Carmela Aprile, Assunta Marrocchi, Luigi Vaccaro

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish
Pages (from-to)6939-6946
Number of pages8
JournalACS Sustainable Chemistry and Engineering
Volume7
Issue number7
DOIs
Publication statusPublished - 1 Apr 2019

Keywords

  • Cross-coupling
  • Green solvents
  • Heterogeneous catalysis
  • Polymeric supports

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