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Calix[4]arenes Containing a Ureido Functionality on the Lower Rim as Highly Efficient Receptors for Anion Recognition.

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    0461698 - ÚCHP 2017 RIV GB eng J - Journal Article
    Klejch, T. - Slavíček, J. - Hudeček, O. - Eigner, V. - Gutierrez, Natalia Andrea - Cuřínová, Petra - Lhoták, P.
    Calix[4]arenes Containing a Ureido Functionality on the Lower Rim as Highly Efficient Receptors for Anion Recognition.
    New Journal of Chemistry. Roč. 40, č. 9 (2016), s. 7935-7942. ISSN 1144-0546. E-ISSN 1369-9261
    Institutional support: RVO:67985858
    Keywords : calix[4]arene * anion recognition * receptors
    Subject RIV: CC - Organic Chemistry
    Impact factor: 3.269, year: 2016

    The introduction of nosyl moieties onto the lower rim of the calix[4]arene skeleton led to the formation of compounds immobilised in cone conformations. Subsequent reduction of the nitro group and reaction with aryl isocyanates enabled the construction of new calixarene-based ligands for anion recognition. As proven by NMR and UV/vis titration experiments, diaryl urea moieties with electron-withdrawing substituents on both sides represent very efficient tools for the complexation of selected anions (AcO−, BzO−, H2PO4−) even in highly competitive solvents such as DMSO-d6.
    Permanent Link: http://hdl.handle.net/11104/0262972

     
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