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Revista de Chimie (Rev. Chim.), Year 2011, Volume 62, Issue 6,





ALINA SAPONAR, ELISABETH-JEANNE POPOVICI, GABRIELA NEMES, NICOLAE POPOVICI, IOANA PERHAITA,IOAN SILAGHI-DUMITRESCU
Synthesis and Properties of N,N-diethylacetamido
Derivatives of p-tert-butyl calixarene

Abstract:

New calix[n]arene derivatives i.e. 5,11,17,23,29,35-hexa-tert-butyl-bis[(N,N-diethylaminocarbonyl)metoxy]-tetrahydroxy-calix[6]arene (3), 5,11,17,23,29,35-hexa-tert-butyl-tetrakis-[(N,N-diethylaminocarbonyl) metoxy]- dihydroxy-calix[6] arene (5), 11,17,23,29,35,41,47-tert-butyl-tetrakis-[(N,N-diethylaminocarbonyl) methoxy]-tetra-hydroxy-calix[8]arene (6) and 5,11,17,23,29,35,41,47-tert-butyl-hexakis-[(N,N-diethylaminocarbonyl)methoxy]-dihydroxy-calix[8]arene (7) have been synthetised by reaction of the parent calix[n]arene (n=6,8) with a-Chloro-N,N-diethylacetamide and K2CO3 or NaH as base in organic solvents such as CH3CN, THF, DMF or their mixture. The new calixarenes derivatives have been investigated by elemental analysis, 1H-NMR, UV-Vis and FTIR spectroscopy and were tested for the extraction of precious metals from aqueous solutions. Keywords: calix[n]arenes, synthesis, functionalization, a-Chloro-N,N-diethylacetamide


Issue: 2011, Volume 62, Issue 6
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