A well-defined, silica-supported tungsten imido alkylidene olefin metathesis catalyst

Bouchra Rhers, Alain Salameh, Anne Baudouin, Elsje Alessandra Quadrelli, Mostafa Taoufik, Christophe Copéret, Frédéric Lefebvre*, Jean Marie Basset, Xavier Solans-Monfort, Odile Eisenstein, Wayne W. Lukens, Lordes Pia H. Lopez, Amritanshu Sinha, Richard R. Schrock

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

130 Scopus citations

Abstract

The reaction of [W(=NAr)(=CHtBu)(CH 2tBu) 2] (1; Ar = 2,6-iPrC 6H 3) with a silica partially dehydroxylated at 700 °C, SiO 2-(700)), gives syn-[(≡SiO)W(=NAr)(=CHtBu)(CH 2tBu)] (2) as a major surface species, which was fully characterized by mass balance analysis, IR, NMR, EXAFS, and DFT periodic calculations. Similarly, complex 1 reacts with [(c-C 5H 9) 7Si 7O 12SiOH] to give [(SiO)W(=NAr)(=CHtBu)(CH 2tBu)] (2m), which shows similar spectroscopic properties. Surface complex 2 is a highly active propene metathesis catalyst, which can achieve a TON of 16 000 within 100 h, with only a slow deactivation.

Original languageEnglish (US)
Pages (from-to)3554-3557
Number of pages4
JournalOrganometallics
Volume25
Issue number15
DOIs
StatePublished - Jul 17 2006

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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