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https://doi.org/10.37358/Rev.Chim.1949

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Revista de Chimie (Rev. Chim.), Year 2013, Volume 64, Issue 1,





ALINA SAPONAR, ELISABETH-JEANNE POPOVICI, RALUCA SEPTELEAN, ECATERINA BICA, IOANA PERHAITA, GABRIELA NEMES
Synthesis of Some New p-tert-octyl calix<4>Arene Derivatives
for Metal Sequestration

Abstract:

New p-tert-octyl calix[4]arene derivatives i.e. 5,11,17,23-tetrakis(1,1,3,3-tetramethylbutyl)-25,27-bis-(but-2-enyloxy)- 26,28-dihydroxy calix[4]arene (2), 5,11,17,23-tetrakis(1,1,3,3-tetramethylbutyl)-25,27-bis-[(ethoxycarbonyl)methoxy]-26,28-dihydroxy calix[4]arene (3) and 5,11,17,23-tetrakis(1,1,3,3-tetramethylbutyl)calix[4]arene-25,27-bis-[(ethoxycarbonyl)methoxy]-26,28-(but-2-enyloxy) calix[4]arene (4) have been synthetised by reaction of the parent p-tert-octyl calix[4]arene with E-2-butenyl bromide and/or ethyl bromoacetate in the presence of K2CO3 or NaH as a base in organic solvents (CH3CN). The new calixarenes derivatives have been characterized by elemental analysis, 1H and 13C NMR, FTIR and UV-Vis spectroscopy, mass spectrometry and were tested for the extraction of rare earth and precious metals from aqueous solutions. Keywords: p-tert-octyl calix[4]arenes, synthesis, functionalization, metal extraction

Issue: 2013, Volume 64, Issue 1
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