Cyclodimerization of alkynes with phosphine-free ruthenium carbene complexes: Carbene consumption by a shunted alkyne oligomerization

Steven T. Diver, Amol A. Kulkarni, Daniel A. Clark, Brian P. Peppers

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

A new cyclodimerization of ruthenium carbenes and alkynes is reported. The cyclodimerization produces substituted cyclopentadienes and consumes the carbene complex. Cyclodimerization of alkynes is predominant at low alkene concentrations and was found to be competitive with enyne metathesis. The presence of the ortho alkyl ether in the ruthenium carbene complex appears to be a critical determinant for the formation of cyclopentadienes. At higher alkene concentration, the observed cyclodimerization can be suppressed, favoring enyne metathesis.

Original languageEnglish (US)
Pages (from-to)5832-5833
Number of pages2
JournalJournal of the American Chemical Society
Volume129
Issue number18
DOIs
StatePublished - May 9 2007

ASJC Scopus subject areas

  • Catalysis
  • General Chemistry
  • Biochemistry
  • Colloid and Surface Chemistry

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