On the peculiar recycling properties of charcoal-supported palladium oxide nanoparticles in Sonogashira reactions

Cybille Rossy (1, 2) , Jérôme Majimel (3) , Mona Tréguer-Delapierre (3) , Eric Fouquet (1) , Francois-Xavier Felpin (2)

1 ISM - Institut des Sciences Moléculaires
2 CEISAM - Chimie Et Interdisciplinarité : Synthèse, Analyse, Modélisation
3 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux

The enhanced recycling properties of 5% PdO NPs/C compared to 5% Pd NPs/C catalyst for the Sonogashira reaction has been unveiled. A simple preparation procedure for 5% Pd NPs/C and 5% PdO NPs/C catalysts is described along with their extensive characterizations. The correlation between the catalyst deactivation and a high content of reduced palladium species for the alkynylation of aryl iodides has been clearly identified with the monitoring of the Pd(0)/Pd(II) ratio over the recycling runs through X-ray photoelectron spectroscopy.

Mots clés: Sonogashira reaction; Recycling; Palladium oxide; Charcoal; Palladium nanoparticles

Domaines: Matériaux

Cybille Rossy, Jérôme Majimel, Mona Tréguer-Delapierre, Eric Fouquet, Francois-Xavier Felpin. On the peculiar recycling properties of charcoal-supported palladium oxide nanoparticles in Sonogashira reactions. Applied Catalysis A : General, 2014, 482, pp.157-162. ⟨10.1016/j.apcata.2014.05.019⟩. ⟨hal-01060902⟩