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Immobilization of heptakis 6-O-tert-butyldimethylsilyl-2,3-di-O-methyl)-β-cyclodextrin for capillary gas chromatography and SFC and micro-liquid chromatography

✍ Scribed by Jürgen Dönnecke; Claudia Paul; Wilfried A. König; Lars. A. Svensson; Olle Gyllenhaal; Jörgen Vessman

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
747 KB
Volume
8
Category
Article
ISSN
1040-7685

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2,3-Di-O-pentyl-6-O-tert-butyldimethylsilyl-b-cyclodextrin has been evaluated as an enantioselective stationary phase for capillary gas chromatography. Experimental results show a good enantioselectivity towards compounds with different functional groups (haloalkanes, alcohols, esters, terpenoids, a

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## Abstract Heptakis(2,3‐di‐__O__‐acetyl‐6‐__O__‐__tert__‐butyldimethylsilyl)‐β‐cyclo ‐dextrin proves to be a versatile chiral stationary phase for the direct differentiation of aroma‐relevant enantiomers.

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## Abstract The characteristics of the new chiral stationary phase heptakis(2,3‐di‐__O__‐methyl‐6‐__O__‐__tert__‐butyldimethylsilyl)‐β‐cyclodextrin are outlined and compared with permethyl‐ and perethyl‐β‐cyclodextrins.

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## Abstract Heptakis[2,3‐di‐__O__‐methyl‐6‐__O__‐(L‐valine‐__tert__‐butylamide‐__N____^α^__‐ylcarbonylmethyl)]‐β‐cyclodextrin with methyl groups on the secondary sites and a diamide chiral selector on the primary ones showed considerable utility as a CSA in the NMR enantiodiscrimination of a wide s