Ion trap tandem mass spectrometry of C-and N-methyl, benzyl, and prenyl substituted 2-oxopyrrolidinoindolines

Martha S. Morales-Ríos, Eleuterio Burgueño-Tapia, Nadia A. Pérez-Rojas, Yolanda Mora-Pérez, Celina Alvarez-Cisneros

Research output: Contribution to journalArticlepeer-review

Abstract

The electron impact induced fragmentations of C- and N-methyl, benzyl, and prenyl substituted 2-oxopyrrolidinoindolines were studied using an ion trap mass spectrometer (IT-MS). Correlations of characteristic fragment ions of the 2-oxopyrrolidinoindoline skeleton with specific modifications of the substituents around it were supported by stepwise fragmentation MS/MS analysis and accurate mass measurements. The MS3 spectra evidenced the neutral loss of methyl- or benzylisocyanate from the 2-oxopyrrolidine ring, which would result in a rearranged stable quinolinium ion.

Original languageEnglish
Pages (from-to)130-139
Number of pages10
JournalRevista Latinoamericana de Quimica
Volume40
Issue number3
StatePublished - 2012

Keywords

  • 2-oxopyrrolidinoindolines
  • Accurate mass
  • EI-ion trap
  • MS/MS analysis
  • Mass spectra
  • Quinolinium ion

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