Chromatographic behaviour of isomeric long-chain aliphatic compounds : II. Argentation thin-layer chromatography of isomeric octadecenoates

✍ Scribed by L.J. Morris; D.M. Wharry; E.W. Hammond

• Publisher: Elsevier Science
• Year: 1967
• Tongue: English
• Weight: 1017 KB
• Volume: 31
• Category: Article
• ISSN: 1873-3778
• DOI: 10.1016/s0021-9673(01)86026-x

✦ Synopsis

chromatographic

procedure also led to the isolation of a component of Exoca~~zcs czq!wessifornzis oil which was characterised as a unique furanoid fatty acid23.

SUMMARY

A novel and improved procedure for separating positionally isomeric cis-and tracts-octadecenoates on silver nitrate impregnated thin-layer plates is described. The method consists of triple development with toluene at -25 O of layers having a 30 o/O level of silver nitrate impregnation. Substantial variation in the mobilities of a wide range of cis-and IruNs-octadecenoates is effected and the migration behaviour of all of the positionally isomeric cis-and tracts-octadecenoates is predicted. Some examples are shown of the practical utility of this procedure for separation of positional isomers in natural and synthetic methyl ester mixtures.