Chem. Heterocycl. Compd. 2020, 56 (8), 1048‑1053
DOI: 10.1007/s10593-020-02771-9
Syrota N.; Kemskiy S.; Bol’but A.; Chernobaev I.; Vovk M.
4-(N-Boc-amino)-1,2,3-triazole-5-carbaldehydes upon heating under reflux in acetic acid in the presence of pyrrolidine react with cycloalkanones, acetylacetone, 1,3-cyclohexanediones, and malononitrile resulting in annulation of the pyridine ring with the formation of new derivatives of [1,2,3]triazolo[4,5-b]pyridine.