29022-36-4Relevant articles and documents
Construction of pyrazolo[3,4-b]pyridines and pyrazolo[4,3-c]pyridines by ring closure of 3-acylpyridine N-oxide tosylhydrazones
Lominac, William J.,D'Angelo, Megan L.,Smith, Mark D.,Ollison, Darius A.,Hanna Jr., James M.
supporting information; experimental part, p. 906 - 909 (2012/03/10)
3-Acylpyridine N-oxide tosylhydrazones give good overall yields of a mixture of pyrazolo[3,4-b]pyridines and pyrazolo[4,3-c]pyridines when treated with an electrophilic additive and an amine base. (Z)-Hydrazones cyclize readily, while (E)-hydrazones fail
Pyrazolo[3,4-b]pyridines: Syntheses, reactions, and nuclear magnetic resonance spectra
Lynch,Khan,Teo,Pedrotti
, p. 420 - 428,420-428 (2007/10/02)
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