Facile synthesis of azaspirocycles via iron trichloride-promoted cyclization/chlorination of cyclic 8-Aryl-5-aza-5-tosyl-2-en-7-yn-1-ols

Ming Chang P. Yeh, Cheng Wei Fang, Hsin Hui Lin

Research output: Contribution to journalArticle

22 Citations (Scopus)


A simple and efficient FeCl 3-promoted cyclization/chlorination of cyclic tosylamine-tethered 8-aryl-2-en-7-yn-1-ols was observed. The reaction proceeded instantaneously at 23 °C in air to afford (Z)-4- (arylchloromethylene)-substituted azaspirocycles in good to excellent yields. This transformation can also be applied to the synthesis of spirocarbocyclic analogues from cyclic 8-aryl-2-en-7-yn-1-ols and FeCl 3.

Original languageEnglish
Pages (from-to)1830-1833
Number of pages4
JournalOrganic Letters
Issue number7
Publication statusPublished - 2012 Apr 6


ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry

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