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Reactions of 5-aminopyrazole with Active Methylene Compounds:Synthesis of Pyrazolo[3,4-b]pyridine Derivatives
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1  Postgraduate Department of Chemistry, K.T.H.M. College, Gangapur Road, Nashik-422002, India

Abstract: A series of pyrazolo[3,4-b]pyridine derivatives was synthesized by knoevenagel condensation of 5-aminopyrazoles aroylacetonitriles and triethyl/methylorthoesters and also by Conrad-limpach reaction of 5-aminopyrazole and ß-keto esters.