Issue 4, 2001
From the journal:

Journal of the Chemical Society, Perkin Transactions 2

Thermal isomerisation of 25,26,27,28-tetrapropoxy-2,8,14,20-tetrathiacalix[4]arene: isolation of all four conformers

Jan Lang,a   Jiří Vlach,a   Hana Dvořáková,a   Pavel Lhoták,b   Michal Himl,b   Richard Hrabala  and  Ivan Stiborb  

a Laboratory of NMR Spectroscopy, Institute of Chemical Technology, Technická 5, Prague, Czech Republic

b Department of Organic Chemistry, Institute of Chemical Technology, Technická 5, Prague 6, Czech Republic

Abstract

25,26,27,28-Tetrapropoxy-2,8,14,20-tetrathiacalix[4]arene undergoes a thermal equilibration at elevated temperature yielding a mixture of conformers. The rate and equilibrium constants of this process were established using NMR spectroscopy. For the first time the equilibrating process was also used on a preparative scale for the isolation and characterisation of all four basic thiacalix[4]arene conformations.

Graphical abstract: Thermal isomerisation of 25,26,27,28-tetrapropoxy-2,8,14,20-tetrathiacalix[4]arene: isolation of all four conformers

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Article information

DOI
https://doi.org/10.1039/B007887P
Article type
Paper
Submitted
28 Sep 2000
Accepted
24 Jan 2001
First published
19 Feb 2001

J. Chem. Soc., Perkin Trans. 2, 2001, 576-580

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Thermal isomerisation of 25,26,27,28-tetrapropoxy-2,8,14,20-tetrathiacalix[4]arene: isolation of all four conformers

J. Lang, J. Vlach, H. Dvořáková, P. Lhoták, M. Himl, R. Hrabal and I. Stibor, J. Chem. Soc., Perkin Trans. 2, 2001, 576 DOI: 10.1039/B007887P

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