The mass spectra of oxoquinolizidines

Abstract
The mass spectra of quinolizidine and of 1-, 2-, and 3-oxoquinolizidine have been determined. The suggested fragmentation patterns are supported by high resolution measurements and deuterium labelling. It would appear that the fragmentation patterns are mainly influenced by the nitrogen; the initial cleavage occurs in the C-C bond which is α with respect to the nitrogen.

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