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Synthesis 2000; 2000(12): 1727-1732
DOI: 10.1055/s-2000-8215
DOI: 10.1055/s-2000-8215
paper
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Effective and Variable Functionalization of Pyrazolo[1,5-a]pyridines Involving Palladium-Catalyzed Coupling Reactions
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Publikationsverlauf
Publikationsdatum:
31. Dezember 2000 (online)
![](https://www.thieme-connect.de/media/synthesis/200012/lookinside/thumbnails/10.1055-s-2000-8215-1.jpg)
Various 7-substituted pyrazolo[1,5-a]pyridines were synthesized by palladium-mediated cross-coupling reactions. Starting from the corresponding 7-iodo derivatives, incorporation of phenyl, vinyl, ethynyl, cyano, and amino was accomplished. Pyrazolo[1,5-a]pyridine-7-ylzinc iodide could be reacted under Negishi conditions to afford the coupling product 16.
pyrazolo[1,5-a]pyridine - regiodirected metallation - cross coupling - Stille reaction - Suzuki reaction