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J Am Soc Mass Spectrom

Title:		Pyridine-Containing schiff base derivatives for the struxtural determination of long-chain aldehydes by gas chromatography combined with mass spectrometry
Author(s):		Harvey DJ;
Address:		"Department of Pharmacology, University of Oxford, South Parks Road, OX1 3QT, Oxford, UK"
Journal Title:		J Am Soc Mass Spectrom
Year:		1991
Volume:		2
Issue:		3
Page Number:		245 - 249
DOI:		10.1016/1044-0305(91)80051-8
ISSN/ISBN:		1044-0305 (Print) 1044-0305 (Linking)
Abstract:		"Long-chain aldehydes, encountered as insect pheromones, were converted into Schiff bases with 3-aminopyridine, 3-(aminomethyl)pyridine, or 2-aminopyrimidine to provide derivatives suitable for revealing the alkyl chain structure by mass spectrometry. The two pyridine-containing derivatives were satisfactory in initiating a radical-induced cleavage. of the chain to give a series of fragment ions, the masses and relative abundance of which revealed the chain structure. The derivatives were applied to aldehydes having straight, branched (iso and anteiso), and unsaturated (delta-7, delta-9, delta-ll, and delta-13) structures; these all gave the fragmentation patterns that have been seen earlier for similar pyridine-containing derivatives of fatty acids (picolinyl esters) and alcohols (nicotinates).Of the two derivatives, those from 3-aminopyridine gave slightly simpler spectra. Derivatives formed from 2-aminopyrimidine were less satisfactory in revealing chain structure"
Keywords:
Notes:		"PubMed-not-MEDLINEHarvey, D J eng 1991/05/01 J Am Soc Mass Spectrom. 1991 May; 2(3):245-9. doi: 10.1016/1044-0305(91)80051-8"