Synthesis of pyrazoles with fluorinated side-chain by cyclization of fluoroalkylated triketides
Autor: | Marleen Winterberg, Christine Fischer, Peter Langer, Stefan Büttner, Alexander Villinger, Dirk Michalik, Ashot S. Saghyan, Willi Desens |
---|---|
Rok vydání: | 2013 |
Předmět: | |
Zdroj: | Tetrahedron. 69:3459-3464 |
ISSN: | 0040-4020 |
DOI: | 10.1016/j.tet.2013.02.059 |
Popis: | The cyclization of fluoroalkylated 3,5-dioxoesters with hydrazines, carried out in glacial acetic acid, afforded pyrazines with fluoroalkylated side-chain. The cyclization of 3,5-dioxoesters with hydroxylamine afforded hydroxylated fluoroalkylated dihydroisoxazoles. All reactions proceeded with good to very good regioselectivity. |
Databáze: | OpenAIRE |
Externí odkaz: |