Synthesis 2024; 56(12): 1958-1966
DOI: 10.1055/s-0042-1751570
paper

Heptafluorobutyric Acid Catalyzed Cross-Dehydrogenative Coupling of 7-Aminocoumarins with 1,2,4-Triazines: A Straightforward Pathway to 3-Triazinyl-7-aminocoumarins

Authors

  • Ramil F. Fatykhov

    a   Ural Federal University, Mira 19, 620002 Ekaterinburg, Russian Federation
  • Igor A. Khalymbadzha

    a   Ural Federal University, Mira 19, 620002 Ekaterinburg, Russian Federation
  • Ainur D. Sharapov

    a   Ural Federal University, Mira 19, 620002 Ekaterinburg, Russian Federation
  • Anastasia P. Potapova

    a   Ural Federal University, Mira 19, 620002 Ekaterinburg, Russian Federation
  • Anton N. Tsmokalyuk

    a   Ural Federal University, Mira 19, 620002 Ekaterinburg, Russian Federation
  • Vasiliy S. Gaviko

    a   Ural Federal University, Mira 19, 620002 Ekaterinburg, Russian Federation
    b   M. N. Mikheev Institute of Metal Physics of the Ural Branch of the Russian Academy of Sciences, 18 S. Kovalevskaya Str., 620108 Ekaterinburg, Russian Federation

This work was supported by the Russian Science Foundation (grant no. 23-73-10050).


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Abstract

A protocol for C–H/C–H cross-coupling reaction between 7-aminocoumarins and 1,2,4-triazines has been developed. The reaction was carried out under heptafluorobutyric acid catalysis providing products with yield up to 91%. The applicability and scope of the proposed method was demonstrated on 25 compounds containing different substituents both in the triazine ring and at the nitrogen atom of 7-aminocoumarins. The study of the reaction mechanism by EPR and radical trapping suggests that radicals are involved in this transformation.

Supporting Information



Publikationsverlauf

Eingereicht: 17. Januar 2024

Angenommen nach Revision: 19. Februar 2024

Artikel online veröffentlicht:
01. März 2024

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