Abstract
Esters of homologous series of primary, secondary and tertiary alcohols with pyruvic acid 2,6-dinitrophenylhydrazone have been separated by thin-layer partition chromatography. The C 1 through C 11 primary, the C 3 through C 11 secondary and the C 4 through the C 8 tertiary alcohol derivatives are separated in the normal partition system employing polyethylene glycol as the stationary phase and hexane: benzene as the mobile phase. The C 12 through C 19 primary and secondary alcohol derivatives are separated by reversed-phase thin-layer chromatography using mineral oil as the stationary phase and acetonitrile-water as the mobile phase. Micro-Cel T-38 is used as the support in both systems. Approximately 1.0 × 10 −4μmoles of an ester can be detected on the plate when exposed to diethylamine vapor.
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