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Keywords:

  • carboranes;
  • carborynes;
  • cycloaddition;
  • synthetic methods;
  • transition metals
Thumbnail image of graphical abstract

Mix three—get one: The complexation of a transition-metal center to an olefin or alkyne can significantly modify its reactivity, which makes the selective coupling of different alkenes or alkynes to carboryne possible. An example of a three-component [2+2+2] cycloaddition reaction of carboryne with unactivated alkene (see scheme, blue) and alkyne (red) mediated by zirconium and nickel complexes is described.