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

被引：38
|
作者：
Lang, J
Vlach, J
Dvoraková, H
Lhoták, P
Himl, M
Hrabal, R
Stibor, I
机构：
[1] Inst Chem Technol, Lab NMR Spect, Prague 6, Czech Republic
[2] Inst Chem Technol, Dept Organ Chem, Prague 6, Czech Republic
来源：
JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2 | 2001年 / 04期
关键词：
D O I：
10.1039/b007887p
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
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.
引用
收藏
页码：576 / 580
页数：5
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