Palladium catalyzed [2+2+1] cyclotrimerization of allcynes: Selective synthesis of fulvenes

Ukkiramapandian Radhakrishnan, Vladimir Gevorgyan, Yoshinori Yamamoto

Research output: Contribution to journalArticlepeer-review

30 Scopus citations


This is the first report on the selective synthesis of fulvenes via a [2+2+1] cyclotrimerization of alkynes under catalytic conditions. The reactions of aliphatic terminal alkynes 1a-e in the presence of a palladium catalyst in toluene gave the cyclotrimerization products 2a-e, not easily available through the previously known methods, in good to fair yields. (C) 2000 Elsevier Science Ltd.

Original languageEnglish (US)
Pages (from-to)1971-1974
Number of pages4
JournalTetrahedron Letters
Issue number12
StatePublished - Mar 18 2000
Externally publishedYes


  • Alkynes
  • Cyclotrimerization
  • Fulvenes
  • Palladium

ASJC Scopus subject areas

  • Biochemistry
  • Drug Discovery
  • Organic Chemistry


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