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Chemistry of Heterocyclic Compounds

, Volume 13, Issue 11, pp 1181–1182 | Cite as

2-Benzopyrylium salts

XXII. Synthesis of carboxyphenyl-2-benzopyrylium salts and isoquinolines
  • E. V. Kuznetsov
  • D. V. Pruchkin
  • G. N. Dorofeenko
Article
  • 27 Downloads

Abstract

Acylation of 3,4-dimethoxybenzylidene phthalide with aliphatic acid anhydrides in the presence of 70% HClO4 and with aromatic or aliphatic-aromatic acids in polyphosphoric acid gave the previously unknown 3-(2-carboxyphenyl)-2-benzopyrylium salts, which were converted to 3-(2-carboxyphenyl)isoquinolines, isolated in the form of the perchlorates, by the action of ammonium hydroxide.

Keywords

Ammonium Hydroxide Organic Chemistry Anhydride Perchlorate 
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.

Literature cited

  1. 1.
    E. V. Kuznetsov, I. V. Shcherbakova, and G. N. Dorofeenko, Khim. Geterotsikl. Soedin., No. 9, 1176 (1977).Google Scholar
  2. 2.
    E. V. Kuznetsov, I. V. Shcherbakova, and G. N. Dorofeenko, Khim. Geterotsikl. Soedin., No. 1, 50 (1976).Google Scholar
  3. 3.
    Organic Syntheses [Russian translation], Vol. 2, Inostr. Lit., Moscow (1949), p. 80.Google Scholar

Copyright information

© Plenum Publishing Corporation 1978

Authors and Affiliations

  • E. V. Kuznetsov
    • 1
  • D. V. Pruchkin
    • 1
  • G. N. Dorofeenko
    • 1
  1. 1.Scientific-Research Institute of Physical and Organic ChemistryRostov State UniversityRostov-on-Don

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