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Keywords:

  • alkynes;
  • aryl migration;
  • boron;
  • cyclizations;
  • platinum
Thumbnail image of graphical abstract

Synergy between metals: Diarylacetylenes 1, containing both a boryl (BMes2) group and a diarylplatinum group, undergo a transformation involving a double metallocyclization/aryl migration to give tetracycles 2 in high diastereoselectivity (see scheme). This remarkable transformation is enabled by the synergistic interplay of the boryl and the diarylplatinum group.