Abstract
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
Original language | English |
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Pages (from-to) | 11875-11878 |
Number of pages | 4 |
Journal | Tetrahedron |
Volume | 60 |
Issue number | 51 |
DOIs | |
Publication status | Published - 13 Dec 2004 |
Externally published | Yes |
Keywords
- Cross-coupling
- Hetarylacetylenes
- Heterocyclization
- Hydroxamic acids
- Pyrazolopyridines
ASJC Scopus subject areas
- Biochemistry
- Drug Discovery
- Organic Chemistry