Optically pure configurationally chiral 18-crown-6 and 9-crown-3 cryptands have been synthesised from L-tartaric acid and D-mannitol and some of the 18-crown-6 derivatives have been shown to form cryptates with metal and primary alkylammonium cations.
W. D. Curtis, D. A. Laidler, J. F. Stoddart and G. H. Jones, J. Chem. Soc., Chem. Commun., 1975, 833 DOI: 10.1039/C39750000833
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