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Acylation d'aminopyrazoles: formation de pyrazolo[3,4-b]pyridines, pyrazolo[3,4-d]pyrimidines et dipyrazolo[3,4-b:4',3'-e]pyridines

✍ Scribed by E. Gonzalez; R. Sarlin; J. Elguero

Publisher: Elsevier Science
Year: 1978
Tongue: French
Weight: 291 KB
Volume: 34
Category: Article
ISSN: 0040-4020
DOI: 10.1016/0040-4020(78)80141-0

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