Chemistry of Heterocyclic Compounds

, Volume 8, Issue 8, pp 935–938 | Cite as

Synthesis of 4-alkoxybenzopyrylium salts and chromones

  • G. N. Dorofeenko
  • V. V. Tkachenko


The reaction of substituted o-hydroxyacetophenones with ethyl orthoformate in the presence of 70% perchloric acid gave 4-alkoxybenzopyrylium salts, which were converted to the corresponding chromones in almost quantitative yield on refluxing with water.


Ethyl Organic Chemistry Perchloric Acid Quantitative Yield Chromones 
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Literature cited

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Copyright information

© Consultants Bureau 1974

Authors and Affiliations

  • G. N. Dorofeenko
    • 1
  • V. V. Tkachenko
    • 1
  1. 1.Scientific-Research Institute of Physical and Organic ChemistryRostov State UniversityRostovon-Don

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