Title of article
Water-soluble pentasulfonatocalix[5]arene: selective recognition of ditopic trimethylammonium cations by a triple non-covalent interaction
Author/Authors
Arena، نويسنده , , Giuseppe and Gentile، نويسنده , , Salvatore and Gulino، نويسنده , , Fabio Giuseppe and Sciotto، نويسنده , , Domenico and Sgarlata، نويسنده , , Carmelo، نويسنده ,
Issue Information
هفته نامه با شماره پیاپی سال 2004
Pages
4
From page
7091
To page
7094
Abstract
The inclusion of tetramethylammonium and ditopic trimethylammonium cations by the water-soluble pentasulfonatocalix[5]arene 1 has been studied at neutral pH by 1H NMR and compared with the homologous tetrasulfonatocalix[4]arene 2. Unlike host 2, host 1 selectively binds the ditopic trimethylammonium ions by three different non-covalent interactions. Remarkably the flexible host 1 exhibits both more efficiency and selectivity in the complexation of ditopic methylammonium ions with respect to similar more preorganised calix[4]arene receptors.
Keywords
Calixarenes , Molecular recognition , Methylammonium cations , Water-soluble receptors
Journal title
Tetrahedron Letters
Serial Year
2004
Journal title
Tetrahedron Letters
Record number
1843288
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