## Abstract Heptakis(2,6‐di‐__O__‐methyl‐3‐__O__‐pentyl) (2‐__O__‐methyl‐6‐__O__‐oct‐1‐enyl‐3‐O‐pentyl)‐γ‐cyclodextrin was immobilized to narrow‐bore fused silica capillaries after selective modification. One __tert__‐butyldimethylsilyl group was introduced into octakis‐(2‐__O__‐methyl‐3‐__O__‐pent
Enantiomer separation by capillary SFC and GC on immobilized permethyl-β-cyclodextrin: A systematic comparison
✍ Scribed by Dieter Schmalzing; Graeme J. Nicholson; Martin Jung; Volker Schurig
- Publisher
- John Wiley and Sons
- Year
- 1992
- Tongue
- English
- Weight
- 346 KB
- Volume
- 4
- Category
- Article
- ISSN
- 1040-7685
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✦ Synopsis
Abstract
Immobilized permethyl‐β‐cyclodextrin was used for enantiomer separation by capillary supercritical fluid chromatography and gas chromatography. The influences of pressure and temperature on chiral separation factors, α, and capacity factors, k, have been studied for four representative racemic solutes. The enantioselectivities in supercritical fluid chromatography and gas chromatography are compared. Solvation effects by supercritical carbon dioxide are discussed.
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## Abstract The enantioseparation of some 2,2‐dialkyl‐4‐alkoxycarbonyl‐1,3‐dioxolane derivatives, which are important intermediates in the total synthesis of a number of biologically active compounds, was studied by means of capillary gas chromatography (CGC). The chromatographic results, obtained
## Abstract Capillary GC on permethyl α‐, β‐, and γ‐cyclodextrins has been applied to separate and quantify the enantiomers of some 2,3‐iso‐propylidene‐1,2,3‐cyclohexanetriol derivatives. Quantitative CGC data are compared to those obtained with chiral shift ^1^H NMR.
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