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Keywords:

  • alkynes;
  • arylation;
  • ethers;
  • gold;
  • heterocycles
Thumbnail image of graphical abstract

Changing tracks: By the use of alkynyl ethers as directing elements, the furan-yne cyclization enters a new reaction pathway. Instead of phenols, tetracycles containing two heteroatoms and two new stereocenters are formed (see scheme).