Abstract
Two π-acidic chiral stationary phases (CSP 3, CSP 4) were prepared by connecting the N-3,5-dinitrobenzamide derivative or 2,4-dinitrobenzenesulfonamide derivative of ( S)-leucinol to silica gel through the carbamate linkage. The CSPs were applied in resolving seven racemic N-acyl-1-naphthylaminoalkanes by chiral HPLC, and the chromatographic resolution results were compared. From the comparison of the resolution results of the two CSPs, the role of amide and sulfonamide group in each chiral selector of CSP 3 and CSP 4 and an iso-butyl and phenyl group on the chiral center of each CSP 2 and CSP 3 were explained.
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