ISSN:
1612-1112
Keywords:
Column liquid chromatography
;
Chiral selectors
;
Tartaric acid derivatives
;
Amino alcohols
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Summary Direct separation of enantiomeric amino-alcohols using tartaric acid derivatives as chiral complexing agents in organic stationary or mobile phases is described. Among the tartaric acid derivatives studied, only tartrates having hydroxyl groups attached to the asymmetric carbon atoms (C2) and (C3) free, gave enantioselective retention for epherrine stereoisomers. (2R,3R)-di-n-butyl tartrate (DBT) dissolved inn-hexane as stationary liquid phase gave higher stereoselectivity than DBT in dichloromethane. Both hydrophilic (Nucleosil CN) and hydrophobic (porous graphitic carbon) solid supports were found to affect the retention and enantioselectivity when using a chiral liquid stationary phase. A retention model is presented and used qualitatively in the study of the effect of DBT concentration, organic solvent, addition of a competing amine and packing material on retention and stereoselectivity.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02327970
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