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Dept. of Chemistry, Hannam University, Daejeon 306-791, KoreaReceived April 14, 2004The same kind of chiral stationary phase with a commercialized chiral column was used to make preparativechiral columns and was applied to resolve racemic N-acetyl-1-naphthylethylamide (3) by preparative liquidchromatography. An improved chromatographic condition to resolve racemic 3 on the CSP was examined bychanging flow rate and kind of the mobile phase and the sample injection volume. The optimized separationconditions were applied to resolve racemic 1,1'-binaphthyl-2,2'-diamine (4). Key Words : Preparative liquid chromatography, Chiral separation, N-Acetyl-1-naphthylethylamide, 1,1'-Bi-naphthyl-2,2'-diamine, Separation conditionIntroductionThe main purpose of preparative chromatography is tooffer separation and purification of the samples. Verzele andBidlingmeyer developed many preparative chromatographictechniques related to column size and mobile phase speedfor good resolution.

Enantioseparation of Racemic 1,1'Binaphthyl-2,2'diamine by Preparative Liquid Chromatography