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Access to pyrazolo[3,4‐b]pyridines through a rhodium‐catalysed intermolecular cyclization of pyrazol‐5‐amine and cyclic 1,3‐diketone‐2‐diazo compounds, has been developed. A methyl carbon of N,N‐dimethylformamide (DMF) performed as a carbon‐hydrogen source for the construction of the pyridine ring. Various pyrazolo[3,4‐b]pyridine derivatives were obtained under mild conditions using air as the terminal...
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