Chemistry of Heterocyclic Compounds

, Volume 20, Issue 10, pp 1078–1081 | Cite as

Bisacylation of the anhydride and esters of 4-methyl-1,2,3,4-tetrahydrophthalic acid

  • V. I. Dulenko
  • V. M. Golyak
  • N. N. Alekseev
  • N. F. Gorenko


The bisacylation of the anhydride and esters of 4-methyl-1,2,3,4-tetrahydrophthalic acid by anhydrides of carboxylic acids in the presence of perchloric acid results in the formation of derivatives of 1,3-dialkyl-6, 7-dicarboxy-5,6,7,8-tetrahydro-2-benzopyrylium salts. Some reactions of the salts obtained, including their recyclization under the action of nucleophiles, have been studied. A convenient preparative method for the synthesis of 6,7-dicarboalkoxy-5,6,7,8-tetrahydroixoquinolines has been developed.


Ester Organic Chemistry Anhydride Carboxylic Acid Perchloric Acid 
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Copyright information

© Plenum Publishing Corporation 1985

Authors and Affiliations

  • V. I. Dulenko
    • 1
  • V. M. Golyak
    • 1
  • N. N. Alekseev
    • 1
  • N. F. Gorenko
    • 1
  1. 1.Institute of Physical Organic Chemistry and Carbon ChemistryAcademy of Sciences of the Ukrainian SSRDonetsk

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