Title of article :
Ternary enantioselective complexes from α-amino acids, 18-crown-6 ether and a macrocyclic xanthone-based receptor
Author/Authors :
Hern?ndez، نويسنده , , José V. and Oliva، نويسنده , , Ana I. and Sim?n، نويسنده , , Luis and Mu?iz، نويسنده , , Francisco M. and Grande، نويسنده , , Manuel and Mor?n، نويسنده , , Joaquin R. Dominguez، نويسنده ,
Issue Information :
هفته نامه با شماره پیاپی سال 2004
Abstract :
A macrocyclic receptor shaped by two xanthone units bonded to binaphthyl is able to extract zwitterionic amino acids enantioselectively from water to chloroform in the presence of 18-crown-6 ether. Based on 1H NMR and circular dichroism spectra, the most stable associate of receptor 1 with alanine is assigned to the (M,S) configuration while the opposite configuration in phenylglycine yields the strong associate (M,R).
Keywords :
Enantioselectivity , macrocyclic receptor , Xanthone , Zwitterionic amino acids , Chiral recognition , Anions
Journal title :
Tetrahedron Letters
Journal title :
Tetrahedron Letters
