Palladium (10 wt%) on a highly cross-linked imidazolium-based material was used as catalyst in 0.1 mol%in the Heck reaction between several alkenes and aryl iodides. Products were obtained from good tohigh yields. Deeper investigations showed a release of Pd species in solution and their capture by theimidazolium-based support. When a sixfold amount of support was employed the re-captured Pd species(0.5–0.6 wt%) were not anymore catalytically active. This result represents a new interesting aspect ofthis work since the highly cross-linked imidazolium-based material can act also as Pd scavenger avoidingthe release of the metal in solution. Important differences between Heck and Suzuki reactions have beenevidenced when the reactions were carried out in the presence of the scavenging support.

Pavia, C., Giacalone, F., Bivona, L.A., Salvo, A., Petrucci, C., Strappaveccia, G., et al. (2014). Evidences of release and catch mechanism in the Heck reactioncatalyzed by palladium immobilized on highlycross-linked-supported imidazolium salts. JOURNAL OF MOLECULAR CATALYSIS. A: CHEMICAL, 387, 57-62 [10.1016/j.molcata.2014.02.025].

Evidences of release and catch mechanism in the Heck reactioncatalyzed by palladium immobilized on highlycross-linked-supported imidazolium salts

PAVIA, Cinzia;GIACALONE, Francesco;BIVONA, Lucia Anna;SALVO, Anna Maria Pia;GRUTTADAURIA, Michelangelo
2014-01-01

Abstract

Palladium (10 wt%) on a highly cross-linked imidazolium-based material was used as catalyst in 0.1 mol%in the Heck reaction between several alkenes and aryl iodides. Products were obtained from good tohigh yields. Deeper investigations showed a release of Pd species in solution and their capture by theimidazolium-based support. When a sixfold amount of support was employed the re-captured Pd species(0.5–0.6 wt%) were not anymore catalytically active. This result represents a new interesting aspect ofthis work since the highly cross-linked imidazolium-based material can act also as Pd scavenger avoidingthe release of the metal in solution. Important differences between Heck and Suzuki reactions have beenevidenced when the reactions were carried out in the presence of the scavenging support.
2014
Settore CHIM/06 - Chimica Organica
Pavia, C., Giacalone, F., Bivona, L.A., Salvo, A., Petrucci, C., Strappaveccia, G., et al. (2014). Evidences of release and catch mechanism in the Heck reactioncatalyzed by palladium immobilized on highlycross-linked-supported imidazolium salts. JOURNAL OF MOLECULAR CATALYSIS. A: CHEMICAL, 387, 57-62 [10.1016/j.molcata.2014.02.025].
File in questo prodotto:
File Dimensione Formato  
J. Mol. Catal. A Chem. 2014, 387, 57-62.pdf

Solo gestori archvio

Descrizione: Articolo principale
Dimensione 1.21 MB
Formato Adobe PDF
1.21 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/90166
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 38
  • ???jsp.display-item.citation.isi??? 36
social impact