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Keywords:

  • chiral discrimination;
  • CH–π interactions;
  • molecular recognition;
  • noncovalent interactions;
  • receptors
Thumbnail image of graphical abstract

Good things come in small interactions: The high chiral discrimination displayed by a new receptor with ammonium salts of aromatic α-amino acid methyl esters is mainly the result of one of the weakest noncovalent interactions, the CH–π interaction (see picture). The interaction has been identified and quantified, and its contribution to the chiral recognition process has been evaluated.