Lewis base promoted reactions of alkyne-dicobalt hexacarbonyls

Takumichi Sugihara, Masahiko Yamaguchi, Mugio Nishizawa

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


The reactivity of alkyne-dicobalt hexacarbonyls changes dramatically depending on the nature of the coordinated Lewis base. Phosphines and phosphites stabilize alkyne-dicobalt hexacarbonyls when they coordinate. In contrast, sulfides and amines make the complexes reactive. The difference in σ-basicity and π-acidity on the central atom dramatically changes the reaction course of the resulting complexes. The coordination of primary amines promotes the stoichiometric Pauson-Khand reaction, the reduction of carbon-chlorine and carbon-oxygen bonds, hydrocarbamoylation and decomplexation. While ethers and alcohols also activate alkyne-dicobalt hexacarbonyls, the degree of activation appears less than amines. Ethers and alcohols are effective for the catalytic Pauson-Khand reaction.

Original languageEnglish
Pages (from-to)179-194
Number of pages16
JournalReviews on Heteroatom Chemistry
Publication statusPublished - 2000 Dec 1


  • Alcohol
  • Amine
  • Carbonyl
  • Cobalt
  • Ether
  • Phosphine
  • Phosphite
  • Sulfide
  • Water

ASJC Scopus subject areas

  • Inorganic Chemistry


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