Synthesis
DOI: 10.1055/a-2623-8823
Paper

Novel Synthesis of 3-Amino-2-pyrones and 3-Hydroxy-4-pyridones via Double Ring-Opening Reactions of 4-Pyrone Epoxides with Amines

Polina K. Titova
1   Institute of Natural Sciences and Mathematics, Ural Federal University named after the first President of Russia B N Yeltsin, Yekaterinburg, Russian Federation
,
Nikita A. Alikin
1   Institute of Natural Sciences and Mathematics, Ural Federal University named after the first President of Russia B N Yeltsin, Yekaterinburg, Russian Federation
,
Alexandrina V. Kaurova
1   Institute of Natural Sciences and Mathematics, Ural Federal University named after the first President of Russia B N Yeltsin, Yekaterinburg, Russian Federation
,
Viktoria V. Viktorova
1   Institute of Natural Sciences and Mathematics, Ural Federal University named after the first President of Russia B N Yeltsin, Yekaterinburg, Russian Federation
,
Alena E. Simbirtseva
1   Institute of Natural Sciences and Mathematics, Ural Federal University named after the first President of Russia B N Yeltsin, Yekaterinburg, Russian Federation
,
Elena V. Steparuk
1   Institute of Natural Sciences and Mathematics, Ural Federal University named after the first President of Russia B N Yeltsin, Yekaterinburg, Russian Federation
,
Oleg S. Eltsov
2   Institute of Chemical Engineering, Ural Federal University, Ekaterinburg, Russian Federation
,
1   Institute of Natural Sciences and Mathematics, Ural Federal University named after the first President of Russia B N Yeltsin, Yekaterinburg, Russian Federation
,
1   Institute of Natural Sciences and Mathematics, Ural Federal University named after the first President of Russia B N Yeltsin, Yekaterinburg, Russian Federation
› Author Affiliations

Funding Information This work was financially supported by the Russian Science Foundation (Grant 22-73-10236, https://rscf.ru/project/22-73-10236/).


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Abstract

The general method for the synthesis of 3-amino-2-pyrones based on the domino reaction of 4-pyrone epoxides with amines has been developed. The formation of the products includes selective Michael addition, double ring-opening, and facile deformylation. The nature of amine has a strong effect on the transformation governed by the cyclization of polycarbonyl intermediates. The reaction with aromatic amines is followed by a side dearoylation process to produce dihydropyrroles. The use of ammonium acetate as a nucleophile in DMSO provides a new reaction pathway yielding 3-hydroxy-4-pyridones. Tautomerism of the obtained products has been studied.

Supplementary Material



Publication History

Received: 16 March 2025

Accepted after revision: 28 May 2025

Accepted Manuscript online:
28 May 2025

Article published online:
01 August 2025

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