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Pyrazolo[3,4- b ]pyridines: Syntheses, reactions, and nuclear magnetic resonance spectra

✍ Scribed by Lynch, Brian Maurice; Khan, Misbahul Ain; Teo, Huk Chia; Pedrotti, Francisco

Book ID
120427754
Publisher
NRC Research Press
Year
1988
Tongue
French
Weight
529 KB
Volume
66
Category
Article
ISSN
0008-4042

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## Abstract 6‐Aminopyridine‐2(1H)‐thiones **1a,b** reacted with dimethylformamide‐dimethylacetal (DMF‐DMA) to give the corresponding 6‐{[(N,N‐dimethylamino)methylene]amino}pyridine derivatives **2a,b**. The latter compounds reacted with hydrazine hydrate to afford the 3,6‐diamino‐1H‐pyrazolo[3,4‐b]