South African Journal of Chemistry
On-line version ISSN 1996-840X
NASUHI PUR, F. and AKBARI DILMAGHANI, K.. Synthesis and characterization of new bis-symmetrical adipoyl, terepthaloyl, chiral diimido-di-L-alanine diesters and chiral phthaloyl-L-alanine ester of tripropoxy p-tert-butyl calixarene and study of their hosting ability for alanine and Na+. S.Afr.j.chem. (Online) [online]. 2010, vol.63, pp. 25-30. ISSN 1996-840X.
Bis-symmetrical tripropoxy p-tert-butyl calixarene esters were prepared from the reaction of tripropoxy calixarene (1HPr3) with di-acyl chlorides as bridges in the presence of sodium hydride. The esters, which were synthesized from L-alanine acyl chloride derivatives, are optically active. In all of these esters, calixarene cavities have a pinched cone conformation. The structures of these esters were confirmed by FT-IR, 1H NMR and 13C NMR spectroscopy, elemental analysis and ion positive FAB mass spectrometry.
Keywords : Synthesis; tripropoxy calixarene; acyl chloride; double calixarenes; L-alanine.