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Chemistry of Heterocyclic Compounds

, Volume 9, Issue 7, pp 805–808 | Cite as

3-Bromopyrylium salts

  • S. V. Krivun
  • S. V. Sayapina
  • S. N. Baranov
Article
  • 29 Downloads

Abstract

Three new methods have been proposed for the synthesis of 3-bromopyrylium salts. An unsaturated 1,5-diketone is converted into a 3-bromopyrylium salt by allyl bromination and the addition of bromine to the double bond. 3-Bromopyrone, obtained by the bromination of dibenzoylacetone is converted by treatment with Grignard reagents into 3-bromopyrylium salts. Similar compounds have also been synthesized by the pyrylation of aromatic and heterocyclic compounds with 3-bromo-4-chloropyrylium salts obtained from 3-bromopyrone.

Keywords

Organic Chemistry Double Bond Bromine Allyl Heterocyclic Compound 
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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Copyright information

© Plenum Publishing Corporation 1975

Authors and Affiliations

  • S. V. Krivun
    • 1
  • S. V. Sayapina
    • 1
  • S. N. Baranov
    • 1
  1. 1.Donetsk Branch of Physical Organic Chemistry, Institute of Physical ChemistryAcademy of Sciences of the Ukrainian SSRUSSR

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