## High -resolution open-tubular columns coated with solutions of heptakis(2,3,6-tri-O-methyl)-P-cyclodextrin (Phase I) or heptakis(2,6-di-O-methyl-3-O-trifluoroacetyl)-~-cyclodextrin (Phase I/) in moderately polar polysiloxanes such as OV-1701 (5% cyanopropyl/7% pheny1/88% methylpolysiloxane) and
CGC enantiomer separation on diluted cyclodextrin derivatives coated on fused silica columns
✍ Scribed by Schurig, Volker ;Jung, Martin ;Schmalzing, Dieter ;Schleimer, Martin ;Duvekot, Jan ;Buyten, Jan C. ;Peene, Jürgen A. ;Mussche, Philippe
- Publisher
- John Wiley and Sons
- Year
- 1990
- Tongue
- English
- Weight
- 368 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0935-6304
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✦ Synopsis
Abstract
High‐resolution capillary gas chromatographic separation of enantiomers, belonging to different classes of compounds on cyclodextrin derivatives is described. The solutions of heptakis (2,3,6‐O‐trimethyl)‐β‐cyclodextrin (Phase I), heptakis (2,6‐O‐dimethyl‐3‐O‐trifluoro‐acetyl)‐β‐cyclodextrin (Phase II) and heptakis (2,6‐O‐dimethyl‐3‐O‐heptafluorobutyryl)‐β‐cyclodextrin (Phase III) in the moderately polar polysiioxane OV‐1701 were coated onto deactivated fused silica capillaries furnishing columns of high efficiency. The three phases show different enantioselectivities for various racemic mixtures.
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Enantiomer separation on monolithic silica HPLC columns using chemically bonded methylated and methylated/acetylated 6-O-tert-butyldimethylsilylated b-cyclodextrin\* A new 2,3-methylated 3\*-monoacetylated 6-O-tert-butyldimethylsilylated b-CD derivative was synthesized and chemically bonded onto ami
## Abstract The effect of dilution of the chiral stationary phase octakis (3‐O‐butyryl‐2, 6‐di‐O‐pentyl)‐γ‐cyclodextrin in the achiral polysiloxane OV–1701 on the separation factor was investigated over a wide concentration range. The loss in enantioselectivity was only negligible down to a dilutio