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Synthesis and chiral recognition properties of two novel chiral calix[4]arene tartaric ester derivatives
(PERGAMON-ELSEVIER SCIENCE LTD, 2006) Karaküçük, Ayşegül; Durmaz, Mustafa; Sirit, Abdülkadir; Yılmaz, Mustafa; Demir, Ayhan S.
Two new chiral calix[4]arene derivatives containing tartaric acid ester moieties were synthesized. The chiral calix[4]arenes are in a 'cone' conformation according to NMR spectroscopy. The chiral recognition capabilities of 1-4 toward the guests, 1,2-propanediol and serine methyl ester hydrochloride (SerOMe), were investigated (H-1 NMR spectroscopy). The extraction properties of compounds 1 and 2 toward selected alpha-amino acid methyl esters were also studied. (c) 2006 Elsevier Ltd. All rights reserved.