Synthesis of Thiadiazole-4- and Pyrazole-3-сarboxylates Based on Ethyl Pyruvates (Het)aroylhydrazones

I. S. Adyukov^a, V. V. Pelipko^a, R. I. Baichurin^a, and S. V. Makarenko^a^,*

^aHerzen State Pedagogical University of Russia, St. Petersburg, 191186 Russia

email: *kohrgpu@yandex.ru

Received 31 August, 2022

Abstract— Ethyl 1,2,3-thiadiazole-4-carboxylate and ethyl 4-formyl-1H-pyrazole-3-carboxylate were synthesized under Hurd–Mori and Vilsmeier–Haack reaction conditions based on (het)aroylhydrazones of ethyl pyruvates.

Keywords: ethyl pyruvate hydrazone, Hurd–Mori reaction, Vilsmeier–Haack reaction, 1,2,3-thiadiazole, 1H-pyrazole, heterocyclic compounds

DOI: 10.1134/S1070363222110044