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Article Dans Une Revue Advanced Synthesis and Catalysis Année : 2013

Palladium N-Heterocyclic Carbene Catalysts for the Ultrasound-Promoted Suzuki-Miyaura Reaction in Glycerol

Résumé

Novel palladium N-heterocyclic-carbene (NHC)-based complexes with 3,4,5-trimethoxybenzyl, alkyl and sulfonate N-substituents were obtained and fully characterized. The new complexes were used as pre-catalysts in the Suzuki-Miyaura coupling of various aryl halides/boron sources in glycerol under pulsed-ultrasound (P-US) activation. High yields were obtained under mild reaction conditions, without formation of undesired by-products. The pure final cross-coupling products were easily recovered without column chromatography and the catalytic/ solvent system could be recycled. TEM (transmission electron microscopy) and XPS (X-ray photoelectron spectroscopy) were used to characterize the nanoparticles and to investigate the fate of the catalysts.

Dates et versions

hal-00820777 , version 1 (06-05-2013)

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Arturo Azua, Jose.A Mata, Pauline Heymes, Eduardo Peris, Frederic Lamaty, et al.. Palladium N-Heterocyclic Carbene Catalysts for the Ultrasound-Promoted Suzuki-Miyaura Reaction in Glycerol. Advanced Synthesis and Catalysis, 2013, 355, pp.1107-1116. ⟨10.1002/adsc.201201047⟩. ⟨hal-00820777⟩
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