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Cyclodextrins as chiral stationary phases in capillary gas chromatography. Part III: Hexakis(3-O-acetyl-2,6-di-O-pentyl)-α-cyclodextrin

✍ Scribed by König, W. A. ;Lutz, S. ;Colberg, C. ;Schmidt, N. ;Wenz, G. ;von der Bey, E. ;Mosandl, A. ;Günther, C. ;Kustermann, A.

Publisher
John Wiley and Sons
Year
1988
Tongue
English
Weight
266 KB
Volume
11
Category
Article
ISSN
0935-6304

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✦ Synopsis

The properties of hexa kis(3-0-acetyl-2,6-di-O-pentyl)-a-cyclodextrin as a chiral stationary phase for capillary gas chromatography are described. For the first time the enantiomers of a series of different lactones are separated and their order of elution is assigned. Moreover, the enantiomers of trifluoroacetylated aldols and amino alcohols, the cyclic carbonates of 1,2-diols, 1 ,3-diols, 0-alkylated glycerols, and some chiral pharmaceuticalsarealso separated on the new chiral phase. The modified a-cyclodextrin is stable above 20OoC.

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## Abstract An unusual peak defocusing effect influencing chromatographic performance over a limited range of elution temperatures is described for hexakis(2,6‐di‐__O__‐pentyl‐3‐__O__‐acetyl)‐α‐cyclodextrin stationary phase. Since this phenomenon is likely to be dependent on minor details of the cy