The separation and identification of phenols in the form of p- (N,N-dimethylamino)benzene p′-azobenzoates by means of paper and thin-layer chromatography

The of p-(N,N-dimethylamino)benzene p′-azobenzoates of differently substituted phenols have been prepared. Some of the derivatives are well crystallized substances that can be characterized by their melting-points. The others, however, are very difficult to purify. Nevertheless, their chromatographi...

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Bibliographic Details
Published in:Journal of Chromatography A 1972-04, Vol.67 (1), p.97-103
Main Authors: Churác̆ek, J., Pechová, H., Mares̆ek, V.
Format: Article
Language:English
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Summary:The of p-(N,N-dimethylamino)benzene p′-azobenzoates of differently substituted phenols have been prepared. Some of the derivatives are well crystallized substances that can be characterized by their melting-points. The others, however, are very difficult to purify. Nevertheless, their chromatographic identification can be achieved without difficulty. The esters are coloured, and consequently their detection is not necessary. Less than 0.5 μg of ester can be detected in the spot. We did not succeed in separating and identifying phenols that have bulky groups in the ortho position to the hydroxyl group.
ISSN:0021-9673
DOI:10.1016/S0021-9673(01)97152-3