- Turkish Journal of Chemistry
- Vol: 35 Issue: 2
- Enantioselective complexation of chiral lariat crown ethers and chiral primary alkylammonium perchlo...
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 : 11 | Download : 4
Publication Date : 9999-12-31
Article Type : Makaleler
Abstract :In order to investigate the enantiomeric recognition abilities toward 2 chiral alkylammonium perchlorates (AmI, AmII) by 1H-NMR titration method in CDCl3, 4 chiral lariat ethers 8-11 with a (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