Synthesis of 2H,4H,9bH -furo[3,2-c][1]benzopyrans by a new intramolecular cycloaddition of a carbonyl ylide to an acetylene

C. Bernaus, J. Font, P. de March

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6 Citations (Scopus)

Abstract

Thermal treatment of oxiranes 1 and 4 affords 2H, 4H, 9H -furo[3,2-c][1]benzopyrans 5 and 6 through an intra-molecular 1,3-dipolar cycloaddition between the carbonyl ylide, generated by ring opening of the oxirane, and the acetylene moiety. © 1991.
Original languageEnglish
Pages (from-to)7713-7718
JournalTetrahedron
Volume47
Issue number36
DOIs
Publication statusPublished - 2 Sep 1991

Keywords

  • acetylene
  • carbonyl ylide
  • furobenzopyran
  • intramolecular 1,3-dipolar cycloaddition

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