Reactions of functionally substituted benzo[<i>c</i>]pyrylium salts. Synthesis of 5H-benzo-2,3-diazepines

Authors

  • C. Л. Богза L. M. Litvinenko Institute of Physical Organic and Coal Chemistry, National Academy of Sciences of Ukraine, 340114 Donetsk
  • Ю. А. Hиколюкин L. M. Litvinenko Institute of Physical Organic and Coal Chemistry, National Academy of Sciences of Ukraine, 340114 Donetsk

Abstract

5H-Benzo-2,3-diazepine derivatives are formed in the reaction of 4-ethoxycarbonylbenzo[c]pyrylium perchlorates with excess hydrazine hydrate. It was established that the key intermediate in the reaction is the 2-aminoisoquinolinium cation. A method for the recyclization of 4-cyanobenzo[c]pyrylium salts to 5H-benzo-2,3-diazepine derivatives was found.

How to Cite
Bogza, S. L.; Nikolyukin, Yu. A. Chem. Heterocycl. Compd. 1993, 29, 1268. [Khim. Geterotsikl. Soedin. 1993, 1475.]

For this article in the English edition, see DOI https://doi.org/10.1007/BF00532022

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Published

1993-11-25

Issue

No. 11 (1993)

Section

Original Papers