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The mass spectra of the 4,4‐dimethyloxazoline derivatives of the methoxymethyl olefins of malvalic and sterculic acids
Author(s) -
Spitzer Volker
Publication year - 1995
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02541103
Subject(s) - derivatization , methanol , chemistry , olefin fiber , mass spectrum , ring (chemistry) , mass spectrometry , gas chromatography–mass spectrometry , fatty acid , organic chemistry , chromatography , catalysis
Abstract A new approach to the gas chromatographymass spectrometry analysis of cyclopropenoid fatty acids is described. The method is based on the “on‐site”‐modification of the cyclopropenoid ring with AgNO 3 ‐saturated methanol to the methoxymethyl olefin and a subsequent “remote‐site”‐derivatization of the carboxyl group to its 4,4‐dimethyloxazoline. The mass spectra of the isomeric reaction products obtained from malvalic and sterculic acid were found to be useful for locating the original cyclopropenoid ring in the fatty acid chain.