Comparison of different 6-tert-butyldimethyl-silylated cyclodextrins as chiral stationary phases in GC
✍ Scribed by Birgit Maas; Armin Dietrich; Armin Mosandl
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 713 KB
- Volume
- 8
- Category
- Article
- ISSN
- 1040-7685
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✦ Synopsis
Separation factors and thermodynamic data for the separation of various chiral analytes on different 6-TBDMS-derivatized y( p )-cyclodextrin-phases were collected and discussed. Modifying the alkyl chain length of the substituents in position 2, and 3 of the cyclodextrin molecule or changing from p to y-CD affects the separation properties extremely, whereas changing the chain length of acyl groups in position 2 and 3 hardly influences enantioselectivity.
📜 SIMILAR VOLUMES
## Abstract __tert__‐Butyldimethylsilylated cyclodextrin derivatives dissolved in polysiloxanes were shown to be versatile chiral stationary phases for the differentiation of important chiral food and flavor ingredients and chiral acids of biochemical and pharmaceutical interest.
## Abstract Three new β‐cyclodextrin derivatives, heptakis(6‐__O__‐isopropyldi‐methylsilyl‐2,3‐di‐__O__‐ethyl)‐β‐cyclodextrin, heptakis(6‐__O__‐thexyldi‐methylsilyl‐2,3‐di‐__O__‐ethyl)‐β‐cyclodextrin, and heptakis(6‐__O__‐cy‐clohexyldimethyl‐2,3‐di‐__O__‐ethyl)‐β‐cyclodextrin (IPDE‐β‐CD, TXDE‐β‐CD,
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
## Abstract The influence of different polysiloxane solvents on the efficiency and stereoselectivity of columns coated with mixtures of heptakis (2,3‐di‐__O__‐acetyl‐6‐__O__‐__tert__‐butyldimethylsilyl)‐β‐cyclodextrin and the polysiloxanes was investigated. Generally, the enantioselectivity increas