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

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Résumé

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.

langue originaleAnglais
Pages (de - à)6939-6946
Nombre de pages8
journalACS Sustainable Chemistry and Engineering
Volume7
Numéro de publication7
Les DOIs
Etat de la publicationPublié - 1 avr. 2019

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