Synthesis, crystal structure and complexation with dibenzylammonium ion of a novel class of crownophanes containing bridged fragments of fluorenone and stilbene
…, AY Lyapunov, CY Kulygina, YA Simonov, MS Fonari…
Index: Lukyanenko, Nikolay G.; Kirichenko, Tatiana I.; Lyapunov, Alexander Yu.; Kulygina, Catherine Yu.; Simonov, Yurii A.; Fonari, Marina S.; Botoshansky, Mark M. Tetrahedron Letters, 2004 , vol. 45, # 14 p. 2927 - 2930
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Citation Number: 12
Abstract
Two representatives of a novel class of crownophanes containing fragments of fluorenone and stilbene bridged by units of diethylene glycol and triethylene glycol, respectively, have been synthesized. The crystal structure and complexation behavior of these crownophanes were studied. They form much stronger complexes with dibenzylammonium hexafluorophosphate (logKa value in CH3CN is equal to 3.92±0.06 and 4.40±0.05, ...