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Keywords:

  • carbenes;
  • catalysis;
  • cycloisomerization;
  • ene reaction;
  • gold;
  • propargyl carboxylate
Thumbnail image of graphical abstract

A new Au-catalyzed cascade reaction was developed for the conversion of propargylic acetates 1 to benzannulated products 2 in good to excellent yields. The gold catalyst is involved in generating intermediate A and in the ene-type reaction of intermediate B for the formation of product 2 (see scheme).