Abstract
Nitrogen-unsubstituted 2,3-dihydroindole and its homologs, as well as 1,2,3,4-tetrahydro-β- carbolines, react with 2,6-dimethyl-4-methoxypyrylium perchlorates to give N-pyrylated derivatives of indole, which are converted to the corresponding pyridine bases by the action of ammonium salts and form 1-aminopyridinium derivatives with hydrazine hydrate.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 11, pp. 1531–1533, November, 1972.
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Zhungietu, G.I., Sukhanyuk, B.P. New pyrylium derivatives in the indole series. Chem Heterocycl Compd 8, 1383–1385 (1972). https://doi.org/10.1007/BF00471877
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DOI: https://doi.org/10.1007/BF00471877