Synthesis of 3-aminopyrazolo[3,4-b]pyridine-4-carbonitriles
摘要:
Annulation of 2-chloropyridine-3,4-dicarbonitriles with hydrazine hydrate and N,N-dimethylhydrazine afforded 3-aminopyrazolo[3,4-b]pyridine-4-carbonitriles and 3-amino-1-methylpyrazolo[3,4-b]pyridine- 4-carbonitriles, respectively.