ISSN:
0030-493X
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The mass spectra of a series of 4,5-dihydroimidazole derivatives were determined. Deuterium labelling and high resolution mass spectrometry were utilized in order to elucidate the mechanism of a number of fragmentations. The most significant ions arise from the following processes: (1) elimination of the C-4 substituent; (2) cleavage of the 1,2-N—C and 4,5-C—C bonds with or without hydrogen migration; (3) cleavage of the 1,5-N—C and 2,3-C—N bonds with charge retention on the N-1—C-2 moiety.In this paper the standard numbering of the imidazole ring (see structures) is retained for the fragment ions. Anomalous behaviour is shown by the t-butoxy derivative; the reasons for this behaviour are discussed.
Additional Material:
3 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/oms.1210130605
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