An unusual thionyl chloride-promoted C−C bond formation to obtain 4,4'-bipyrazolones

Dialkyl 5,5'-dioxo-4,4'-bipyrazole-4,4'-dicarboxylates are readily obtained by the reaction of 5-hydroxypyrazole-4-carboxylates in refluxing thionyl chloride. The obtained diesters can be transformed into the corresponding 4,4'-bipyrazoles via alkaline hydrolysis and subsequent d...

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Detalles Bibliográficos
Autores principales: Eller, Gernot A, Vilkauskaitė, Gytė, Šačkus, Algirdas, Martynaitis, Vytas, Mamuye, Ashenafi Damtew, Pace, Vittorio, Holzer, Wolfgang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Beilstein-Institut 2018
Materias:
Full Research Paper
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6009192/
https://www.ncbi.nlm.nih.gov/pubmed/29977396
http://dx.doi.org/10.3762/bjoc.14.110

Internet

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6009192/
https://www.ncbi.nlm.nih.gov/pubmed/29977396
http://dx.doi.org/10.3762/bjoc.14.110

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