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Synlett 1999; 1999(3): 281-287
DOI: 10.1055/s-1999-2593
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Ruthenium-Catalyzed Coupling Reactions of Alkynes and Alkenes

Chae S. Yi*
  • *Department of Chemistry, Marquette University, Milwaukee, WI 53201-1881, USA; Fax +1 (4 14) 2 88-70 66; E-mail: yic@vms.csd.mu.edu
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Publication Date:
31 December 1999 (online)

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The in-situ generated ruthenium-acetylide complex 6 was shown to be an effective catalyst for both homo- and cross-dimerization of alkynes. The catalytically active β-agostic enynyl complex 16 was isolated, and the mechanism of the cross dimerization reaction has been proposed. The ruthenacyclopentadiene complex 19 was found to catalyze the linear coupling reaction of acetylene and acrylic compounds. Based on the experimental evidences, the mechanism of this reaction has been proposed. The selective head-to-tail homodimerization reaction of acrylic compounds was achieved by using the ruthenium-hydride complex 1b.

alkynes - alkenes - ruthenium-acetylide - metallacyclopentadiene