ISSN:
0030-493X
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The mass spectral fragmentation of some maleimides, isomaleimides, bis-maleimides, bis-isomaleimides and diazatetracyclotetraones (intramolecular photocyclization products of bis-maleimides) have been investigated. The elimination of carbon dioxide from the molecular ions of these compounds is not generally an important process. Fragment ions arising from the transfer of one or more hydrogen atoms from the eliminated to the charge retaining moiety (and vice versa) are prevalent and the variation in fragment ion intensity with changes in structure is consistent with the mechanisms of the analogous fragmentations of succinimides established by Djerassi's group. The apparently unusual fragmentations of the diazatetracyclotetraones may be rationalized on the basis that the molecular ion consists of three or more different species.
Additional Material:
1 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/oms.1210030408
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