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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/12108

Title: Influence of alkali and alkaline earth ions on the O-alkylation of the lower rim phenolic-OH groups of p-tert-butyl-calix[4]arene to result in amide-pendants: Template action of K+ and the structure of K+ bound tetra-amide derivative crystallized with a p-tert-butyl-calix[4]arene anion
Authors: ALI, A
RAO, CP
GUIONNEAU, P
Keywords: calix<4>arene diamide
extraction properties
cation complexation
ligand
acid
coordination
acetonitrile
conformation
calixarenes
acetamide
Issue Date: 2008
Publisher: SPRINGER
Citation: JOURNAL OF CHEMICAL SCIENCES, 120(2), 237-247
Abstract: Role of alkali and alkaline earth ions on the formation of calix[4]arene-amide derivatives through O-alkylation of the lower rim phenolic-OH groups in general and template action of K+ in particular have been explored. Na+ and K+ ions among alkali, and Ca2+ and Sr2+ ions among alkaline earth have shown tetra-amide derivatives bound to metal ion species. Among all these, potassium salts act as template and yields a K+ bound tetra-amide derivative where the charge is counter balanced by a calix[4] arene-monoanion and the product is crystallographically characterized. Change in the amide precursor used in these O-alkylation reactions has no effect on the type of the amide derivative formed. Also demonstrated is a direct one-step reaction for the preparation of 1,3-di-amide derivative in high yield and low reaction period using CsHCO3.
URI: http://dx.doi.org/10.1007/s12039-008-0029-9
http://dspace.library.iitb.ac.in/xmlui/handle/10054/12108
http://hdl.handle.net/10054/12108
ISSN: 0253-4134
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