Palladium(II)-catalyzed annulation of alkynes with ortho-ester-containing phenylboronic acids

Hirokazu Tsukamoto, Yoshinori Kondo

Research output: Contribution to journalArticlepeer-review

93 Citations (Scopus)


Palladlum(II) catalyzes annulation of internal alkynes with methyl 2-boronobenzoate and (2-boronophenyl)acetate to provide 2,3-disubstituted indenones and 3,4-disubstituted 2-naphthols, respectively. The annulation reaction would proceed through transmetalation of Pd(II) with the boron reagents and insertion of the alkynes, followed by unprecedented 1,2-addition of the generated alkenylpalladium(II) species to the intramolecular ester group.

Original languageEnglish
Pages (from-to)4227-4230
Number of pages4
JournalOrganic letters
Issue number21
Publication statusPublished - 2007 Oct 11

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry


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