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Issue 24, 1994
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Design and synthesis of ionophores with multiple receptor sites: solution nuclear magnetic resonance studies of their interaction with chloride, sodium and potassium ions

Kenneth I. Kinnear,  David P. Mousley,  Ezzidin Arafa  and  Joyce C. Lockhart 

Abstract

Ionophores of the bis(crown ether) type, with polyamine linkers, examples of which are known to bind simultaneously to a cation and its counter anion, have been prepared. One-pot reductive amination, used to couple a benzo-crown aldehyde with aliphatic (both linear and cyclic) and aromatic polyamines, proved to be the most efficient route. A strong inhibition of one synthetic route (amine benzylation) was observed. The competitive interaction between chloride and other anions for binding with the protonated ionophores was examined using 35Cl NMR spectroscopy. Sandwich complexing of potassium contrasting with single-face complexation of sodium was demonstrated by 13C NMR spectroscopy.

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Article type: Paper
DOI: 10.1039/DT9940003637
Citation: J. Chem. Soc., Dalton Trans., 1994,0, 3637-3643
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    Design and synthesis of ionophores with multiple receptor sites: solution nuclear magnetic resonance studies of their interaction with chloride, sodium and potassium ions

    K. I. Kinnear, D. P. Mousley, E. Arafa and J. C. Lockhart, J. Chem. Soc., Dalton Trans., 1994, 0, 3637
    DOI: 10.1039/DT9940003637

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