Chemistry of Heterocyclic Compounds

, Volume 11, Issue 5, pp 551–554 | Cite as

Synthesis of thieno [3,4-c ]- and selenopheno[3,4-c] pyrylium salts

  • V. I. Dulenko
  • N. N. Alekseev
Article

Abstract

Acylation of 3-acetonyl- and 3-phenacyl-2,5-dimethylthiophenes with aliphatic acid anhydrides in the presence of perchloric acid gives thieno[3,4-c]pyrylium perchlorates. Reaction of the latter with ammonia gives the corresponding thieno[3,4-c]pyridines or diketones of the thiophene series. Selenopheno[3,4-c]pyrylium salts could not be isolated in the acylation of 3-acetonyl- and 3-phenacyl-2,5-dimethylselenophenes.

Keywords

Ammonia Organic Chemistry Pyridine Anhydride Perchlorate 

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Copyright information

© Plenum Publishing Corporation 1976

Authors and Affiliations

  • V. I. Dulenko
    • 1
  • N. N. Alekseev
    • 1
  1. 1.Donetsk Physical-Organic Chemistry Branch, Institute of Physical ChemistryAcademy of Sciences of the Ukrainian SSRDonetsk

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