Title of article
Di-ionizable p-tert-butylcalix[4]arene-1,2-crown-4 ligands: synthesis and high divalent metal ion extraction selectivity
Author/Authors
Tu، نويسنده , , Chuqiao and Surowiec، نويسنده , , Kazimierz and Bartsch، نويسنده , , Richard A.، نويسنده ,
Issue Information
هفته نامه با شماره پیاپی سال 2006
Pages
4
From page
3443
To page
3446
Abstract
Di-ionizable p-tert-butylcalix[4]arene-1,2-crown-4 ethers in the cone conformation are synthesized with their conformation and regioselectivity verified by NMR spectroscopy. The new ligands are efficient extractants with high selectivity for Ba2+ in competitive solvent extraction of alkaline earth metal cations from aqueous solutions into chloroform.
Keywords
Crown ether , Solvent extraction , Alkaline earth metal cations , Calixarene
Journal title
Tetrahedron Letters
Serial Year
2006
Journal title
Tetrahedron Letters
Record number
1850325
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