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Keywords:

  • arynes;
  • copper;
  • cross-coupling;
  • cyclization;
  • palladium
Thumbnail image of graphical abstract

A little cooperation: A cooperative copper- and palladium-catalyzed highly regio- and chemoselective three-component coupling of benzynes, allylic epoxides, and terminal alkynes provides an efficient atom-economical route to ortho-disubstituted arenes. The resulting product undergoes a gold-catalyzed cyclization reaction (see scheme; dba=dibenzylideneacetone, dppp=1,3-bis(diphenylphosphanyl)propane).