The mass spectra of 10,10-dimethyl-9,10-dihydro-10-sila-2-azaanthracenes with heterocyclic substituents at C9

  • V. K. Shevtsov
  • S. G. Poshivalov
  • A. I. Mikaya
  • A. V. Varlamov
  • N. S. Prostakova
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Abstract

The major pathways for the fragmentation of dihydrosilaazaanthracenes, containing an azetidine substituent, spiro-β-lactam ring, or spirotetrahydrofuryl residue at C9 upon electron impact are related to the presence of these rings. The azetidine ring may be eliminated as a radical or by splitting “in half” to give [M-Me]+ ions. Splitting of the spiro-β-lactam ring “in half” leads to the two strongest ions M+. The loss of the tetrahydrofuryl ring leads to ions of 9-methylene- and 9-oxosilaazaanthracenes. The dlmethylsilyl group loses a methyl radical at various stages of the decomposition.

Keywords

Methyl Mass Spectrum Electron Impact Major Pathway Azetidine 

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Copyright information

© Plenum Publishing Corporation 1990

Authors and Affiliations

  • V. K. Shevtsov
    • 1
    • 2
  • S. G. Poshivalov
    • 1
    • 2
  • A. I. Mikaya
    • 1
    • 2
  • A. V. Varlamov
    • 1
    • 2
  • N. S. Prostakova
    • 1
    • 2
  1. 1.A. V. Topchiev Institute of Petrochemical SynthesisAcademy of Sciences of the USSRMoscow
  2. 2.P. Lumumba International Friendship UniversityMoscow

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