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Picolinyl esters as derivatives for the structural determination of long chain branched and unsaturated fatty acids
Author(s) -
Harvey D. J.
Publication year - 1982
Publication title -
biomedical mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0306-042X
DOI - 10.1002/bms.1200090107
Subject(s) - chemistry , branching (polymer chemistry) , mass spectrum , mass spectrometry , double bond , pyridine , gas chromatography , organic chemistry , cleavage (geology) , stereochemistry , chromatography , medicinal chemistry , geotechnical engineering , fracture (geology) , engineering
3‐Picolinyl esters were prepared from n ‐, iso ‐, anteiso ‐ and unsaturated long chain fatty acids and were examined by gas chromatography and mass spectrometry. The spectra contained ions which were diagnostic of the position of both the methyl branching and the double bond, and could be rationalized by assuming hydrogen abstraction from the chain by the nitrogen of the pyridine ring and cleavage at the resulting radical site. The derivatives were easy to prepare and gave more informative spectra than the previously used pyrrolidides.