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Keywords:

  • arynes;
  • cycloadditions;
  • hydrocarbons;
  • nanographenes;
  • oligoacenes
Thumbnail image of graphical abstract

Living in clover: Sequential [4+2] and [2+2+2] aryne cycloadditions allow the isolation of cloverlike and archlike nanographenes (see picture). This approach led to the synthesis of the largest cata-condensed aromatic hydrocarbon that has been obtained to date, a system formed by 16 fused benzene rings (22 benzene rings in total) and 102 sp2 carbon atoms.