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- Title
New Synthesis of Pyrano[4,3-d]pyrazolo[3,4-b]pyridines.
- Authors
Sirakanyan, S. N.; Hakobyan, E. K.; Hovakimyan, A. A.
- Abstract
A new efficient method has been developed for the synthesis of highly biologically active pyrano-[4,3-d]pyrazolo[3,4-b]pyridines on the basis of Smiles rearrangement of ethyl [(8-alkyl(aryl)-5-cyano-3,3-dimethyl-3,4-dihydro-1H-pyrano[3,4-c]pyridin-6-yl)oxy]acetates. Intermediate acetohydrazides have also been isolated. The proposed procedure is advantageous due to the possibility of avoiding experimentally difficult chlorination stage.
- Subjects
PYRIDINE synthesis; ACTIVATION (Chemistry); INTERMEDIATES (Chemistry); CHLORINATION; REARRANGEMENTS (Chemistry)
- Publication
Russian Journal of Organic Chemistry, 2018, Vol 54, Issue 6, p929
- ISSN
1070-4280
- Publication type
Article
- DOI
10.1134/S1070428018060167