Synthesis of γ-benzopyranone by TfOH-promoted regioselective cyclization of o-alkynoylphenols

Masahito Yoshida, Yuta Fujino, Takayuki Doi

Research output: Contribution to journalArticlepeer-review

63 Citations (Scopus)

Abstract

Regioselective cyclization of o-alkynoylphenols forming γ-benzopyranones has been demonstrated. Trifluoromethanesulfonic acid (TfOH) induced 6-endo cyclization of o-alkynoylphenols without forming 5-exo cyclized benzofuranone derivatives to provide the corresponding γ-benzopyranones in high yields.

Original languageEnglish
Pages (from-to)4526-4529
Number of pages4
JournalOrganic letters
Volume13
Issue number17
DOIs
Publication statusPublished - 2011 Sep 2

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry

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