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Chemistry of Heterocyclic Compounds

, Volume 19, Issue 8, pp 842–844 | Cite as

Mass-spectroscopic study of dihydro-8h-pyrano(thiopyrano)[4′,3′:4,5]thieno-[2,3-d]uracil derivatives

  • R. G. Mirzoyan
  • K. E. Basentsyan
  • P. B. Terent'ev
  • A. Sh. Oganisyan
  • A. S. Noravyan
Article
  • 20 Downloads

Abstract

When a saturated six-membered oxygen- or sulfur-containing heteroring is present in the thienouracil molecule, retrodiene decomposition of the uracil ring takes place in all cases in later stages of the fragmentation. Under the influence of electron impact the more saturated heteroring undergoes fragmentation first with ejection of CHO and SH radicals, respectively, or fragmentation proceeds via a retrodiene mechanism. This is probably associated with the primary localization of the positive charge in it in the molecular ion.

Keywords

Oxygen Organic Chemistry Positive Charge Uracil Electron Impact 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Literature cited

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Copyright information

© Plenum Publishing Corporation 1984

Authors and Affiliations

  • R. G. Mirzoyan
    • 1
  • K. E. Basentsyan
    • 1
  • P. B. Terent'ev
    • 1
  • A. Sh. Oganisyan
    • 1
  • A. S. Noravyan
    • 1
  1. 1.Armenian BranchAll-Union Scientific-Research Institute of Chemical Reagents and Ultrapure Chemical SubstancesErevan

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