The formation of inherently chiral calix[4]arenes by the intramolecular cyclization approach suffers from a limited number of suitable substrates for these reactions. Here, we report an easy way to prepare one class of such compounds: calixquinolines, which can be obtained by the reaction of aldehydes with easily accessible aminocalix[4]arenes in acidic conditions (Doebner-Miller reaction). The synthetic procedure represents a very straightforward approach to the inherently chiral macrocyclic systems. The complexation studies revealed the ability of these compounds to complex quaternary ammonium salts with different stoichiometries depending on the guest molecules. At the same time, the ability of enantioselective complexation of chiral N-methylammonium salts was demonstrated.

Department of Organic Chemistry University of Chemistry and Technology Prague Technická 5 166 28 Prague Czech Republic

Department of Solid State Chemistry UCTP Technická 5 166 28 Prague Czech Republic

Laboratory of NMR Spectroscopy UCTP Technická 5 166 28 Prague Czech Republic

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