
%0 Journal Article
%A Crow, WD 
%A Hodgkin, JH 
%A Shannon, JS 
%T Alkaloids of the Australian Rutaceae: <I>Halfordia scleroxyla</I>. III. Mass spectrometry of halfordinol and related oxazoles
%J Australian Journal of Chemistry
%D 1965/09/01
%V 18
%N 9
%P 1433-1440
%K 
%R https://doi.org/10.1071/CH9651433
%U https://www.publish.csiro.au/paper/CH9651433 
%X Comparative studies by mass spectrometry of halfordinol [2-(3-pyridy1)-5-(4-hydroxyphenyl)oxazole] and other derivatives of the new oxazole alkaloid N-methylhalfordinium chloride with model aryloxazoles confirmed the structure of the alkaloid. One of the main features of the decomposition of 2,5-diaryloxazole ions in the mass spectrometer involved a novel concerted elimination of HCN and CO. A mechanism has been proposed for this and other reactions of oxazole ions, including those of 4,5- and 2,4-diphenyl derivatives. 
