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Study of the Heterocyclization of vic-Substituted Hydrazides of Acetylenylpyrazolecarboxylic Acids into N-Amino Pyrazolopyridinones.

✍ Scribed by Sergei F. Vasilevsky; Elena V. Mshvidobadze; Jose Elguero


Book ID
101944616
Publisher
John Wiley and Sons
Year
2003
Weight
137 KB
Volume
34
Category
Article
ISSN
0931-7597

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Study of the heterocyclization of vic-su
✍ Sergei F. Vasilevsky; Elena V. Mshvidobadze; JosΓ© Elguero πŸ“‚ Article πŸ“… 2002 πŸ› Journal of Heterocyclic Chemistry 🌐 English βš– 52 KB

## Abstract We report a new and efficient methodology to prepare __N__‐amino pyrazolo[4,3‐__c__]pyridin‐4‐ones **4** and __N__‐amino pyrazolo[3,4‐__c__]pyridin‐4‐ones **8** from __vic__‐acetylenyl/hydrazido pyrazoles. The procedure involves the intermediate synthesis of methyl esters of acetylenyl‐