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Pyrazolo[3,4- b ]pyridine in heterocyclic synthesis: synthesis of new pyrazolo[3,4- b ]pyridines, imidazo[1',2':1,5]pyrazolo[3,4- b ]pyridines, and pyrido[2',3':3,4]pyrazolo[1,5- a ]pyrimidines

✍ Scribed by Gad-Elkareem, Mohamed A.M; Abdel-Fattah, Azza M; Elneairy, Mohamed A.A

Book ID
127101513
Publisher
NRC Research Press
Year
2007
Tongue
French
Weight
105 KB
Volume
85
Category
Article
ISSN
0008-4042

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## Abstract magnified image A series of pyrazolo[3,4‐__b__]pyridines has been synthesized by __FriedlΓ€nder__ condensation of 5‐amino‐pyrazole‐4‐carbaldehyde **1** with active methylene compounds in basic medium. Pyrazolo[4β€²3β€²:5,6]pyrido‐[2,3‐__d__]pyrimidines have been synthesized from pyrazolo[3,