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Electron impact ionization mass spectra of some substituted dipyrido[1,2-a:4,3-d]pyrimidinones

✍ Scribed by Esa Mäki; Kalevi Pihlaja; Imre Huber; Ferenc Fülöp; Gábor Bernáth; Pirjo Vainiotalo

Publisher
John Wiley and Sons
Year
1993
Tongue
English
Weight
349 KB
Volume
28
Category
Article
ISSN
1076-5174

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✦ Synopsis

Abstract

The electron impact ionization mass spectra of dipyrido [1,2‐a:4,3‐d]pyrimidinones are strongly influenced by the degree of aromaticity of the fused rings. The molecular ions of the compounds are fairly stable. The main routes of fragmentation involve formation of the [M – H]^+^ ion and loss of substituents, H~2~CN˙, CO and alkyl radicals.

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