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Concave reagents - 19. Synthesis, structure, and basicity of a calix[6]arene bridged by an aniline

✍ Scribed by Haymo Ross; Ulrich Lüning

Book ID
103398233
Publisher
Elsevier Science
Year
1996
Tongue
French
Weight
229 KB
Volume
52
Category
Article
ISSN
0040-4020

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## Abstract Compounds 2–6 were synthesized by starting from the pyridine‐bridged calix[6]arenes 1. Most of these derivatives exist in a concave conformation like their parent compounds 1, but in some cases the conformational behavior is different. Relative basicities of 1–6 and of the open‐chain mo

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The straightforward synthesis of a C s 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 preorgani