Application and chiral recognition of heptakis (2,6-di-O-methyl-3-O-trifluoroacetyl)-β-cyclodextrin as a stationary phase for the gas chromatographic separation of enantiomers
✍ Scribed by Georgi Stoev
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 465 KB
- Volume
- 589
- Category
- Article
- ISSN
- 1873-3778
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## 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
## 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.
## Abstract Combination of the enantioselective properties of the two versatile gas‐chromatographic chiral stationary phases (CSPs) octakis(3‐__O__‐butanoyl‐2,6‐di‐__O__‐__n__‐pentyl)‐γ‐CD (Lipodex E) **1** and L‐valine‐diamide‐based CSP Chirasil‐Val‐C~11~ **2** has been realized by doping the chir
## Abstract The ^1^H and ^13^C NMR spectra of heptakis(2,6‐di‐__O__‐pentyl)‐β‐cyclodextrin in deuteriochloroform have been fully and unambiguously assigned. Several methods, including homo‐ and heteronuclear spin decoupling, two‐dimensional homo‐ and hetero‐nuclear correlation NMR spectroscopy, spe