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|Title:||Synthesis and Interaction with Copper(II) Cations of Cyano- and Aminoresorcinarenes||Authors:||Botta, B
DELLE MONACHE, G
Baratto, Maria Camilla
|Issue Date:||2002||Project:||None||Journal:||JOURNAL OF ORGANIC CHEMISTRY||Abstract:||
Following our studies on resorcinarenes, we synthesized new macrocycles containing cyanomethyl and aminomethyl side chains. Three stereoisomers (2a-c) of the former were obtained by BF3·Et2O tetramerization of the corresponding trans-cinnamic acid derivative and were shown to be in the 1,2-alternate, cone, and 1,3-alternate conformations. Conversely, the tetraamino derivative 6a in the cone conformation was prepared from the corresponding tetrabromide 3a. The interactions with CuII cations of the new compounds were analyzed by measurements of 1H NMR and EPR spectra in parallel with molecular modeling calculations.
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