Cellulose triphenylcarbamate derivatives have been used as stationary phases for resolution of the enantiomers of the β€-blockers propranolol and bupranolol by TLC. The derivatives examined were: cellulose trisphenylacarbamate (1), cellulose tris(2,3-dichlorophenyl carbamate) (2), cellulose tris(2,4-
Optical resolution of ferrocene derivatives by liquid chromatography using aqueous cyclomaltohexaose as the mobile phase and polyamide as the stationary phase
β Scribed by Akira Harada; Kohji Saeki; Shigetoshi Takahashi
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 378 KB
- Volume
- 192
- Category
- Article
- ISSN
- 0008-6215
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β¦ Synopsis
1-Ferrocenylethanol and its analogues were completely resolved into their enantiomers by liquid chromatography on a polyamide column using aqueous cyclomaltohexaose (cY-cyclodextrin, (rCD) as the mobile phase. The stability constants (K,) for the inclusion complexes of aCD with each enantiomer of l-ferrocenylethanol, determined by liquid chromatography with various concentrations of (YCD, were 104~~' for (S)-ferrocenylethanol and 79~~~ for the (R) isomer. The temperature dependence of the resolution has been studied.
π SIMILAR VOLUMES
A study developing enantiomeric separations by metal chelate additives to the mobile phase in reversed-phase liquid chromatography is reported. In particular the use of Cu(I1) complexes of L-prolinamide (L-ProNH,) and Lvalinamide (L-ValNH,) is examined and discussed. Interestingly, for a series of D