Chemistry of Heterocyclic Compounds

, Volume 8, Issue 8, pp 932–934 | Cite as

Pyrylium[2,3-b]indole salts

  • G. I. Zhungietu
  • B. P. Sukhanyuk


2-Ketoindoline and 1-methyl-2-ketoindoline condense with hydroxymethylene ketones in the presence of hydrogen chloride to give pyrylium[2,3-b]indole chlorides, which can be converted to 5-(3-oxindolyl)-Δ2-pyrazolines by reaction with phenylhydrazine and to 5-(3-oxindolyl)-Δ2-isoxazolines by reaction with hydroxylamine.


Hydrogen Chloride Organic Chemistry Ketone Indole 
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Literature cited

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Copyright information

© Consultants Bureau 1974

Authors and Affiliations

  • G. I. Zhungietu
    • 1
  • B. P. Sukhanyuk
    • 1
  1. 1.Institute of ChemistryAcademy of Sciences of the Moldavian SSRKishinev

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