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Synthesis and metal recognition of biscalix[4]arenes. Intramolecular metal-hopping as detected by1H NMR spectroscopy

Authors
Journal
Tetrahedron Letters
0040-4039
Publisher
Elsevier
Publication Date
Volume
34
Issue
13
Identifiers
DOI: 10.1016/s0040-4039(00)60368-4

Abstract

Abstract Ionophoric biscalix[4]aryl esters in which the lower edges confront each other were synthesized. Through the 1H NMR spectral examination, we found a novel phenomenon that Na + hops in a 1H NMR time-scale between the two metal-binding sites.

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