Chemistry of Heterocyclic Compounds p. 219 - 223 (1991)
Update date:2022-08-05
Topics:
Shibaeva, N. V.
Borodaev, S. V.
Yudilevich, I. A.
Knyazev, A. P.
Dubonosov, A. D.
et al.
4-Alkyl-3-azapyrylium salts undergo acylation at the alkyl group under acid-catalyzed conditions to give 4-acylmethyl-3-azapyrylium derivatives, which upon heating in proton-donating solvents recyclize to give 4-acylaminopyrylium salts.
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Doi:10.1055/s-0031-1289526
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