The chromenone derivative 5, easy to synthesize from 2-hydroxyacetophenone 1, has been used to prepare the hosts 7–10 and 12. These combine three hydrogen bonds, π-stacking and chargetransfer interactions for the complexation of N-benzoylamino acids in CDCl3.
C. Raposo, M. Martín, M. xmlns="http://www.rsc.org/schema/rscart38"> <. L. Mussons, M. Crego, J. Anaya, M. xmlns="http://www.rsc.org/schema/rscart38"> <. C. Caballero and J. R. Morán, J. Chem. Soc., Perkin Trans. 1, 1994, 2113 DOI: 10.1039/P19940002113
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