Mixed N-Heterocyclic Carbene/Phosphite Ruthenium Complexes: The Effect of a Bulkier NHC.

Cesar A. Urbina-Blanco, Xavier Bantreil, Julia Wappel, Thibault E. Schmid, Alexandra M. Z. Slawin, Christian Slugovc, Catherine S. J. Cazin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

The synthesis, characterization, and catalytic activity of two new complexes, 2a,b, featuring a sterically demanding NHC and two different phosphites are described. Complexes 2a,b display a mutually trans arrangement of the pi-acidic phosphite and the strong sigma-donor SIPr ligand (SIPr = N,N'-bis(2,6-diisopropylphenyl)imidazolin-2-ylidene). The synergy between the phosphite and the NHC ligand was revealed in the RCM of challenging substrates leading to tetrasubstituted olefins where, in comparison to their phosphine-containing analogues, 2a,b allowed higher conversions of these challenging substrates.

Original languageEnglish
Pages (from-to)6240-6247
Number of pages8
JournalOrganometallics
Volume32
Issue number21
DOIs
Publication statusPublished - 11 Nov 2013

Keywords

  • RING-CLOSING METATHESIS
  • CATALYZED OLEFIN METATHESIS
  • INDENYLIDENE COMPLEXES
  • CARBENE LIGANDS
  • TETRASUBSTITUTED OLEFINS
  • BEARING
  • POLYMERIZATION
  • MECHANISM
  • SOLVENT
  • REACTIVITY

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