The separation of 2,4-dinitrophenylhydrazones by thin layer chromatography

Add time:09/08/2019    Source:sciencedirect.com

The separation of 41 mono-, bis-, and tris-2,4-dinitrophenylhydrazones derived from simple saturated aldehydes and ketones, unsaturated aldehydes, di-, tri-, and hydroxycarbonyl compounds, and α-ketoacids by thin-layer chromatography is described. The cis- and trans-isomers of some of these compounds have been separated. The characteristic colours produced by different classes of 2,4-dinitrophenylhydrazones sprayed with ethanolamine are more lasting and more distinctive than those with alcoholic sodium or potassium hydroxide. A method for the chromatography of highly insoluble 2,4-dinitrophenylhydrazones is described. 2,4-Dinitrophenylhydrazones have been treated with acetylating agents, and with concentrated hydrochloric acid, directly on the thin-layer plates, and the chromatographic behaviour of the products has been studied. Methods for separating and identifying the components of complex mixtures of 2,4-dinitrophenylhydrazones are discussed.

We also recommend Trading Suppliers and Manufacturers of GLYOXAL MONO-2,4-DINITROPHENYLHYDRAZONE (cas 13059-68-2). Pls Click Website Link as below: cas 13059-68-2 suppliers

Prev:Triorganoantimony(V) diorganophosphinates. Crystal and molecular structure of (diphenylphosphinato)(hydroxo)trimethylantimony(V), exhibiting a polymeric chain supramolecular self-assembly through hydrogen bonds
Next:Thin-layer chromatography of 2,4-dinitrophenylhydrazine derivatives of hydroxycarbonyl compounds)