GC Separation of Enantiomers of Alkyl Esters of 2-Bromo Substituted Carboxylic Acids Enantiomers on 6-TBDMS-2,3-di-alkyl- β- and γ-Cyclodextrin Stationary Phases
作者:Ivan Špánik、Darina Kačeriaková、Jan Krupčík、Daniel Wayne Armstrong
DOI:10.1002/chir.22310
日期:2014.6
The gas chromatographic separation of enantiomers of 2‐Br carboxylicacid derivatives was studied on four different 6‐TBDMS‐2,3‐di‐O‐alkyl‐ β‐ and ‐γ‐CD stationaryphases. The differences in thermodynamic data ΔH and –ΔS} for the 15 structurally related racemates were evaluated. The influence of structure differences in the alkyl substituents covalently attached to the stereogenic carbon atom, as