Abstract
HPLC enantioseparation of selected chiral sulfoxides was studied using cellulose and amylose phenylcarbamate derivatives as chiral stationary phases (CSPs). The contributions of various functional groups of a chiral analyte as well as the polysaccharide derivatives in the analyte retention and chiral recognition were evaluated. A very high enantioseparation factor exceeding 110 was observed in the enantioseparation of 2-(benzylsulfinyl)benzamide (BSBA) on cellulose tris(3,5-dichlorophenylcarbamate) (CDCPC) CSP by using 2-propanol as a mobile phase. The enantiomer elution order was opposite on cellulose and amylose phenylcarbamates. For the polysaccharide-type CSPs, pure alcohols such as methanol, ethanol and 2-propanol represent a valuable alternative to more common alcohol–hydrocarbon and reversed-phase eluents.
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