823220-98-0Relevant academic research and scientific papers
A new route to pyrazolo[3,4-c] and [4,3-c]pyridinones via heterocyclization of vic-substituted hydroxamic acids of acetylenylpyrazoles
Mshvidobadze, Elena V.,Vasilevsky, Sergei F.,Elguero, Jose
, p. 11875 - 11878 (2004)
We report in this paper the synthesis of 6-substituted pyrazolo[4,3-c] pyridin-4-ones, 6-substituted 5-hydroxypyrazolo[4,3-c]pyridin-6-ones, 5-substituted pyrazolo[3,4-c]pyridin-7-ones and 5-substituted 6-hydroxypyrazolo[3,4-c]pyridin-7-ones by heterocyclization of vic-acetylenylpyrazol-hydroxamic acids under the influence of copper(I) salt in dimethylformamide or with organic bases in butanol or methanol. Graphical Abstract
