Gallium trichloride-catalyzed exhaustive α-ethynylation reaction of 1-silylacetylenes

Ryo Amemiya, Masahiko Yamaguchi

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


Gallium trichloride (GaCl3) catalyzes the ethynylation reaction of a 1,4-enyne with chlorosilylacetylene at the propargyl position giving a triethynylvinylmethane. This catalytic method can be applied to the exhaustive α-ethynylation of 1-silylacetylenes possessing less acidic propargyl protons, and mono-, di-, and triethynylated products are obtained depending on the structure of the starting materials.

Original languageEnglish
Pages (from-to)1011-1014
Number of pages4
JournalAdvanced Synthesis and Catalysis
Issue number7
Publication statusPublished - 2007 May 1


  • 1,4-Enynes
  • 1-Silylacetylenes
  • Deprotonation
  • Ethynylation
  • Gallium trichloride
  • Propargylgallium

ASJC Scopus subject areas

  • Catalysis
  • Organic Chemistry


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