Electron ionization fragmentation of some isoindolone derivatives

Esa Mäki, Ferenc Csende, G. Stájer, Pirjo Vainiotalo, Kalevi Pihlaja

Research output: Contribution to journalArticle

2 Citations (Scopus)


The electron ionization mass spectra of eleven isoindolone derivatives are reported. The molecular ions of these compounds were stable, some of them even very abundant (8–29% of the total ion current). There were many ions common to all or most of the compounds studied, although the abundances varied markedly from case to case. The base peak varied also from compound to compound. The most important ions common to almost every compound were [M—(CH2)iXH]+ (ions ai; i=1–4), [M—C7H7]+ (ion b) and the ion pattern [c—H], c and [c + H] corresponding to the loss of fused carbocycle together with the carbonyl function. These ions are caused by α‐cleavages and inductive dissociations of the bonds of the molecular ion in respect to the hetero atoms X and/or N.

Original languageEnglish
Pages (from-to)858-862
Number of pages5
JournalRapid Communications in Mass Spectrometry
Issue number10
Publication statusPublished - 1994

ASJC Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy
  • Organic Chemistry

Fingerprint Dive into the research topics of 'Electron ionization fragmentation of some isoindolone derivatives'. Together they form a unique fingerprint.

  • Cite this