Molecules (Dec 2017)

From α-Bromomethylbutenolide to Fused Tri(Tetra) Cyclic Dihydrofurandiones through Barbier Reaction–Heck Arylation Sequence

  • Arbia Talbi,
  • Anne Gaucher,
  • Flavien Bourdreux,
  • Jérôme Marrot,
  • Mohamed L. Efrit,
  • Hédi M’Rabet,
  • Damien Prim

DOI
https://doi.org/10.3390/molecules22122171
Journal volume & issue
Vol. 22, no. 12
p. 2171

Abstract

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A Barbier reaction–Heck arylation sequence from α-bromomethylbutenolide to fused tri and tetracyclic lactones has been developed. The first step involving a Barbier reaction enabled installing ortho-bromoaromatics in α-ylidene γ-lactones. The latter substrates were subjected to intramolecular Heck reaction conditions which selectively afforded 6,5,5 or 6,6,5 fused ring systems depending on the nature of the base employed.

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