The Ruthenium Acetylide Catalyzed Cross-Coupling Reaction of Terminal and Internal Alkynes:  Isolation of a Catalytically Active β-Agostic Intermediate Species

Chae S. Yi* and Nianhong Liu
Department of Chemistry, Marquette University, Milwaukee, Wisconsin 53201-1881
Organometallics, 1998, 17 (15), pp 3158–3160
DOI: 10.1021/om980405g
Publication Date (Web): June 25, 1998
Copyright © 1998 American Chemical Society
*

In papers with more than one author, the asterisk indicates the name of the author to whom inquiries about the paper should be addressed.

Abstract

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The in situ generated ruthenium acetylide complex C5Me5(PPh3)RuCCPh (1) was found to catalyze the cross-coupling reaction of terminal and internal alkynes to yield functionalized enynes. An intermediate β-agostic species was isolated from the reaction of C5Me5(PPh3)(Cl)RuCCHBu-t (2b) with 2-butyne in the presence of NaOMe.

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History

  • Published In Issue July 20, 1998
  • Received May 20, 1998

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