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Oct 9, 2015Keywords:
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Synthesis & Characterization of New bis-Symmetrical Adipoyl, Terepthaloyl, Chiral Diimido-di-L-alanine Diesters & Chiral Phthaloyl-L-alanine Ester of Tripropoxy <i>p-tert</i>-Butyl Calix[4]arene...
Abstract
Full Title: 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 Calix[4]arene and Study of Their Hosting Ability for Alanine and Na+
Bis-symmetrical tripropoxy p-tert-butyl calix[4]arene esters were prepared from the reaction of tripropoxy calix[4]arene (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, calix[4]arene cavities have a pinched cone conformation. The structures of these esters were confirmed by FT-IR, 1HNMRand 13CNMRspectroscopy, elemental analysis and ion positive FAB mass spectrometry.
Keywords: Synthesis, Tripropoxy Calix[4]arene, Acyl Chloride, Double Calix[4]arenes, L-alanine
