Study of the heterocyclization of vic-su
β
Sergei F. Vasilevsky; Elena V. Mshvidobadze; JosΓ© Elguero
π
Article
π
2002
π
Journal of Heterocyclic Chemistry
π
English
β 52 KB
## Abstract We report a new and efficient methodology to prepare __N__βamino pyrazolo[4,3β__c__]pyridinβ4βones **4** and __N__βamino pyrazolo[3,4β__c__]pyridinβ4βones **8** from __vic__βacetylenyl/hydrazido pyrazoles. The procedure involves the intermediate synthesis of methyl esters of acetylenylβ