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South African Journal of Chemistry

versão On-line ISSN 1996-840X
versão impressa ISSN 0379-4350

S.Afr.j.chem. (Online) vol.63  Durban  2010

 

RESEARCH ARTICLE

 

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+

 

 

F. Nasuhi Pur*; K. Akbari Dilmaghani

Department of Chemistry, University of Urmia, Urmia 57159, Iran

 

 


ABSTRACT

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, 1H NMR and 13C NMR spectroscopy, elemental analysis and ion positive FAB mass spectrometry.

Keywords: Synthesis, tripropoxy calix[4]arene, acyl chloride, double calix[4]arenes, L-alanine


 

 

Full text available only in PDF format.

 

Acknowledgements

We gratefully acknowledge the University of Urmia for providing a fellowship for the present work.

 

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Received 28 August 2009
Revised 23 March 2010
Accepted 30 March 2010

 

 

* To whom correspondence should be addressed. E-mail: fazelnasuhi@gmail.com

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