Journal
TETRAHEDRON LETTERS
Volume 49, Issue 24, Pages 3848-3852Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2008.04.085
Keywords
calixarenes; host-guest chemistry; supramolecular chemistry; molecular recognition; ammonium ion
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The straightforward synthesis of a C, symmetrical calix[6]arene possessing carboxylic acid groups as well as an ammonium arm is described. This calixarene can encapsulate ammonium ions through a highly selective recognition process thanks to the presence of an internal ion-paired cap that preorganizes the cavity and constitutes an efficient binding site. (c) 2008 Elsevier Ltd. All rights reserved.
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