J. Quiroga, B. Insuasty, Silvia Cruz
Mar 1, 1998
Citations
0
Influential Citations
38
Citations
Journal
Journal of Heterocyclic Chemistry
Abstract
Several new pyrazolo[3,4-b]pyridines were obtained from the reaction of 5-amino-1-aryl-3-methylpyrazoles 1 with β-dimemylaminopropiophenones 2 in pyridine. The structure elucidation of 4,5-dihydropyrazolo[3,4-b]pyridines 3 is based on nmr measurements and X-ray diffraction. The treatment of compounds 3 with N-bromosuccinimide led to the formation of pyrazolo[3,4-b]pyridines 4.