Issue 6, 2002
From the journal:

Journal of the Chemical Society, Perkin Transactions 2

Stereochemistry of capped calix[4]arenes in liquid and solid phase by NMR spectroscopy

Francesca Benevelli,a   Jacek Klinowski,a   István Bitter,b   Alajos Grün,b   Barbara Balázsc  and  Gábor Tóth*c  

* Corresponding authors

a Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, UK

b Department of Organic Chemical Technology, Budapest University of Technology and Economics, Budapest, Hungary

c Technical Analytical Research Group of the Hungarian Academy of Sciences, Institute for General and Analytical Chemistry of the Budapest University of Technology and Economics, St. Gellért tér 4, Budapest, Hungary
E-mail: g-toth@tki.aak.bme.hu

Abstract

The stereochemistry of calix[4]arenes capped by diamide bridges in the 1,3-position on the lower rim was established by 1H and 13C solution and solid state NMR. The 13C chemical shifts of ArCH2Ar were found to be diagnostic of the cone, partial cone and 1,3-alternate conformations also in the solid state. Two sets of signals appearing in the CP/MAS spectra of 1,3-alternate and partial cone compounds indicate that these molecules occupy inequivalent sites in the elemental cell.

Graphical abstract: Stereochemistry of capped calix[4]arenes in liquid and solid phase by NMR spectroscopy

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Article information

DOI
https://doi.org/10.1039/B110978M
Article type
Paper
Submitted
30 Nov 2001
Accepted
02 Apr 2002
First published
16 Apr 2002

J. Chem. Soc., Perkin Trans. 2, 2002, 1187-1192

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Stereochemistry of capped calix[4]arenes in liquid and solid phase by NMR spectroscopy

F. Benevelli, J. Klinowski, I. Bitter, A. Grün, B. Balázs and G. Tóth, J. Chem. Soc., Perkin Trans. 2, 2002, 1187 DOI: 10.1039/B110978M

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