Silica-supported tungsten carbynes (≡SiO)xW(≡CH)(Me)y (x = 1, y = 2; X = 2, y = 1): New efficient catalysts for alkyne cyclotrimerization

Nassima Riache, Alexandre Déry, Emmanuel Callens, Albert Poater, Manoja Samantaray, Raju Dey, Jinhua Hong, Kun Li, Luigi Cavallo, Jean-Marie Basset

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

The activity of silica-supported tungsten carbyne complexes (≡SiO)xW(≡CH)(Me)y (x = 1, y = 2; x = 2, y = 1) toward alkynes is reported. We found that they are efficient precatalysts for terminal alkyne cyclotrimerization with high TONs. We also demonstrate that this catalyst species is active for alkyne cyclotrimerization without the formation of significant alkyne metathesis products. Additional DFT calculations highlight the importance of the W coordination sphere in supporting this experimental behavior.
Original languageEnglish (US)
Pages (from-to)690-695
Number of pages6
JournalOrganometallics
Volume34
Issue number4
DOIs
StatePublished - Feb 2 2015

ASJC Scopus subject areas

  • Organic Chemistry
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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