Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 7, Issue 7, Pages 6939-6946Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.8b06502
Keywords
Heterogeneous catalysis; Cross-coupling; Polymeric supports; Green solvents
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Funding
- University degli Studi di Perugia
- MIUR
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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 gamma-valerolactone reaction medium.
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