Interaction of benzothieno[2,3-<i>c</i>]pyrylium salts with hydrazine. Derivatives of 5H-[2,3]benzothieno[2,3-<i>e</i>]diazepines

Authors

  • C. В. Толкунов L. M. Litvinenko Institute of Physical Organic Chemistry and Coal Tar Chemistry, National Academy of Sciences of Ukraine, Donetsk 340114
  • С. Ю. Суйков L. M. Litvinenko Institute of Physical Organic Chemistry and Coal Tar Chemistry, National Academy of Sciences of Ukraine, Donetsk 340114
  • М. Ю. Зубрицкий L. M. Litvinenko Institute of Physical Organic Chemistry and Coal Tar Chemistry, National Academy of Sciences of Ukraine, Donetsk 340114
  • В. И. Дуленко L. M. Litvinenko Institute of Physical Organic Chemistry and Coal Tar Chemistry, National Academy of Sciences of Ukraine, Donetsk 340114

Abstract

A study has been made of the reaction of 1,3-disubstituted bezothieno[2,3-c]pyrylium salts with hydrazine. It has been shown that 1,3-dialkyl-substituted benzothieno[2,3-c]pyrylium salts interact with hydrazine to give N-amino-1,3-dialkylbenzothieno[2,3-c]pyridines. The presence of a pyrylium ring on one of the positions of the phenyl group leads to a mixture of N-amino derivatives and 5H-[2,3]benzothieno[2,3-e]diazepines. In contrast, 1,3-diphenylbenzothieno[2,3-c]pyrylium perchlorate gives exclusively 5H-[2,3]benzothieno[2,3-e]diazepine.

How to Cite
Tolkunov, S. V.; Suikov, S. Y.; Zubritskii, M. Y.; Dulenko, V. I. Chem. Heterocycl. Compd. 1998, 34, 983. [Khim. Geterotsikl. Soedin. 1998, 34, 1137.]

For this article in the English edition, see DOI https://doi.org/10.1007/BF02311338

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Published

1998-08-25

Issue

No. 8 (1998)

Section

Original Papers