Larger Groups, Smaller Enantioselectivity? Two Anthracene-Containing, Pyridino-Crown Ether-Based Fluorescent Sensor Molecules

Autor:	Balázs Szemenyei, Marianna Firisz, Péter Baranyai, Péter Bagi, László Drahos, Ildikó Móczár, Péter Huszthy
Rok vydání:	2022
Předmět:	General Chemical Engineering
Zdroj:	Periodica Polytechnica Chemical Engineering. 66:541-549
ISSN:	1587-3765 0324-5853
DOI:	10.3311/ppch.20468
Popis:	(R,R)- and (S,S)-enantiomers of anthracene-containing pyridino-18-crown-6 ether having tert-butyl groups at the stereogenic centers were prepared with the aim of achieving higher enantioselectivity than for the reported (S,S)-analogue having isobutyl groups. The enantiomeric recognition abilities of the new sensor molecules toward chiral protonated primary amines and amino acid esters were studied in acetonitrile by UV–vis and fluorescence spectroscopies. The pKa values of these pyridino-crown ethers and their reported (S,S)-analogues having methyl or isobutyl groups have also been determined in acetonitrile.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::104e8308feed2827a1e2c085d50d6323 https://doi.org/10.3311/ppch.20468 Zobrazit plný text záznamu Plný text ve formátu PDF