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Di-tert-butyldimethylsilylated cyclodextrins as chiral stationary phases: Thermodynamic investigations

✍ Scribed by Birgit Maas; Armin Dietrich; Thomas Beck; Susanne Börner; Armin Mosandl

Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
467 KB
Volume
7
Category
Article
ISSN
1040-7685

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✦ Synopsis

Thermodynamic data, which are derived from measurements of separation factors at different temperatures for various chiral compounds, show some expected, but also some surprising effects concerning the mechanism of chiral recognition for the cyclodextrin derivatives investigated.

📜 SIMILAR VOLUMES

tert-Butyldimethylsilyl-substituted cycl
tert-Butyldimethylsilyl-substituted cyclodextrin derivatives as versatile chiral stationary phases in capillary GC
✍ Birgit Maas; Armin Dietrich; Volker Karl; Astrid Kaunzinger; Detmar Lehmann; Tho 📂 Article 📅 1993 🏛 John Wiley and Sons 🌐 English ⚖ 412 KB

## 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.

2,3-Di-O-pentyl-6-O-tert-butyldimethylsi
2,3-Di-O-pentyl-6-O-tert-butyldimethylsilyl-β-cyclodextrin as a Chiral Stationary Phase in Capillary Gas Chromatography
✍ Miranda, Elena ;Sánchez, Félix ;Sanz, Jesús ;Jiménez, María I. ;Martínez-Castro, 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 115 KB 👁 1 views

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

Diluted modified cyclodextrins as chiral
Diluted modified cyclodextrins as chiral stationary phases - influence of the polysiloxane solvent: Heptakis(2,3-di-O-acetyl-6-O-tert-butyldimethylsilyl)-β-cyclodextrin
✍ Dietrich, Armin ;Maas, Birgit ;Mosandl, Armin 📂 Article 📅 1995 🏛 John Wiley and Sons 🌐 English ⚖ 619 KB

## 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

Comparison of different 6-tert-butyldime
Comparison of different 6-tert-butyldimethyl-silylated cyclodextrins as chiral stationary phases in GC
✍ Birgit Maas; Armin Dietrich; Armin Mosandl 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 713 KB

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