Počet záznamů: 1  

Chiral anion recognition using calix[4]arene-based ureido receptors in a 1,3-alternate conformation

  1. 1.
    0535708 - ÚCHP 2021 RIV DE eng J - Článek v odborném periodiku
    Horáčková, T. - Budka, J. - Eigner, V. - Chung, W.-S. - Cuřínová, Petra - Lhoták, P.
    Chiral anion recognition using calix[4]arene-based ureido receptors in a 1,3-alternate conformation.
    Beilstein Journal of Organic Chemistry. Roč. 16, DEC 7 (2020), s. 2999-3007. ISSN 1860-5397. E-ISSN 1860-5397
    Grant CEP: GA ČR(CZ) GA20-07833S
    Institucionální podpora: RVO:67985858
    Klíčová slova: anion recognition * calixarene * chiral receptor
    Obor OECD: Organic chemistry
    Impakt faktor: 2.883, rok: 2020
    Způsob publikování: Open access
    https://www.beilstein-journals.org/s/zhaeT9EkPh

    The introduction of chiral alkyl substituents into the lower rim of calix[4]arene immobilised in the 1,3-alternate conformation led to a system possessing a preorganised ureido cavity hemmed with chiral alkyl units in the near proximity. As shown by the 1H NMR titration experiments, these compounds can be used as receptors for chiral anions in DMSO-d6. The chiral recognition ability can be further strengthened by the introduction of another chiral moiety directly onto the urea N atoms. The systems with double chiral units being located around the binding ureido cavity showed better stereodiscrimination, with the highest selectivity factor being 3.33 (KL/KD) achieved for N-acetyl-ʟ-phenylalaninate. The structures of some receptors were confirmed by single crystal X-ray analysis.
    Trvalý link: http://hdl.handle.net/11104/0314543

     
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