Dehydrogenative silylation of alcohols catalysed by half-sandwich iron N-heterocyclic carbene complexes

João M S Cardoso, Rita Lopes, Beatriz Royo Cantabrana

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

A new series of tetramethylcyclopentadienyl-functionalised N-heterocyclic carbene complexes of iron bearing different wingtips of general type (Cp∗-NHCR)Fe(CO)I (R = nBu, iBu, Et, CH2CH2OMe, CH2Ph) were prepared by direct reaction of Fe3(CO)12 and the corresponding imidazolium proligands. These new iron-NHC complexes have been found to be efficient catalysts for the dehydrogenative silylation of alcohols with silanes. Iron metal complexes bearing iso-butyl and n-butyl wingtips displayed slightly better catalytic performances than the related complexes (Cp∗-NHCR)Fe(CO)I (R = Et, CH2CH2OMe, CH2Ph), affording quantitative yields of the corresponding silylethers in 8 h at 70 °C in acetonitrile.

Original languageEnglish
Pages (from-to)173-177
Number of pages5
JournalJournal Of Organometallic Chemistry
Volume775
DOIs
Publication statusPublished - 1 Jan 2015

Keywords

  • Coupling of silanes with alcohols
  • Iron
  • N-Heterocyclic carbene ligands
  • Silylethers

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