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This mini‐review focuses on fluorescent optically active crown ethers (polymeric derivatives are not included) reported in the literature (according to our knowledge), of which enantiomeric recognition ability, and in some cases, also inorganic cation complexation properties, were investigated by the sensitive and versatile fluorescence spectroscopy. These crown ether‐based chemosensors contain various...
New enantiopure dimethyl‐substituted acridino‐18‐crown‐6 and acridino‐21‐crown‐7 ethers containing a carboxyl group at position 9 of the acridine ring [(S,S)‐8, (S,S)‐9, (R,R)‐10] were synthesized. The pKa values of the new crown ethers [(S,S)‐8, (S,S)‐9, (R,R)‐10] and of an earlier reported macrocycle [(R,R)‐2] were determined by UV‐pH titrations. Crown ether (S,S)‐8 was attached to silica gel by...
The enantiomeric separation ability of the newly prepared chiral stationary phases containing acridino‐18‐crown‐6 ether selectors was studied by high‐performance liquid chromatography (HPLC). The chiral stationary phases separated the enantiomers of selected protonated primary aralkylamines efficiently. The best results were found for the separation of the mixtures of enantiomers of NO2‐PEA. Chirality 26:651–654, 2014....
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