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

Esa Mäki, Kalevi Pihlaja, Imre Huber, F. Fülöp, G. Bernáth, Pirjo Vainiotalo

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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, H2CN˙, CO and alkyl radicals.

Original languageEnglish
Pages (from-to)18-22
Number of pages5
JournalOrganic Mass Spectrometry
Issue number1
Publication statusPublished - 1993


ASJC Scopus subject areas

  • Biochemistry
  • Molecular Medicine
  • Instrumentation

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