Enantioselective complexation of chiral lariat crown ethers and chiral primary alkylammonium perchlorates

Authors : Mehmet Zafer KÖYLÜ, Tarık ARAL, Mehmet KARAKAPLAN

Pages : 171-179

Doi:10.3906/zoo-1209-14

View : 18 | Download : 8

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :In order to investigate the enantiomeric recognition abilities toward 2 chiral alkylammonium perchlorates insert ignore into journalissuearticles values(AmI, AmII); by 1H-NMR titration method in CDCl3, 4 chiral lariat ethers 8-11 with a insert ignore into journalissuearticles values(p-methoxyphenoxy); methyl flexible side arm were used. The most effective enantiomeric recognition was obtained by LCEs 9 and 11 toward AmII, by KR/KS 6.58 and KS/KR 6.63, respectively. The effect of macroring size, subunit of macroring, and side arm appeared to have strong influence on the binding ability of these alkylammonium ions.
Keywords : Chiral lariat crown ethers, enantioselectivity, complexation properties, molecular recognition, NMR titration