Ethyl 5-amino-3-oxo-1, 2-dihydro-1H-pyrazole-1-carboxylate in the selective synthesis of partially hydrogenated pyrazolo [3, 4-b] pyridin-3-ones

…, NG Mozgovaya, PO Kos, MV Vovk

文献索引：Lebed; Mozgovaya; Kos; Vovk Chemistry of Heterocyclic Compounds, 2012 , vol. 48, # 2 p. 368 - 371

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摘要

Ethyl 5-amino-3-oxo-1, 2-dihydro-1H-pyrazole-1-carboxylate undergoes selective cyclocondensation with 1, 3-dicarbonyl compounds or their synthetic equivalents to give ethyl 3-oxo-1, 2-dihydro-pyrazolo [3, 4-b] pyridine-1-carboxylates which are readily