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Keywords:

  • alkynes;
  • benzoxocines;
  • cyclization;
  • gold;
  • homogeneous catalysis
Thumbnail image of graphical abstract

A golden dig! Gold-catalyzed direct access to functionalized 2H-1-benzoxocines, eight-membered-ring ethers, is described. This unprecedented synthesis of benzoxocines occurs by an 8-endo-dig cyclization of the 1,7-enyne substrates.