Mass spectra of heterocyclic compounds. IV–2,4,5-Trioxoimidazolidines
✍ Scribed by Renée A. Corral; Orfeo O. Orazi; Juan Zinczuk
- Publisher
- John Wiley and Sons
- Year
- 1979
- Tongue
- English
- Weight
- 348 KB
- Volume
- 14
- Category
- Article
- ISSN
- 1076-5174
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
General fragmentations induced by electron impact of twenty‐one examples of 2,4,5‐trioxoimidazolidines are rationalized with the aid of metastable transitions, high resolution measurements and deuterium and ^18^O labelling. The results can be used for the recognition of different types of derivatives.
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## Abstract The mass fragmentation behaviour of 3,4‐dihydro‐1__H__‐2,3‐benzothiazine 2,2‐dioxides was studied. The rationalizations suggested are supported by accurate mass measurements, metastable evidence and deuterium labelling.
The electron impact mass spectra of several new cycloalkane-substituted pyrimidines are reported. The cleavage of the cycloalkanepyrimidines depends strongly on the alkyl ring size and on the substituents attached to this ring. The pyrimidines with fused small rings (cyclobutapyrimidines) undergo co