3-Formylchromones IV. The Rearrangement of 3-Formylchromone Enamines as a Simple, Facile Route to Novel Pyrazolo[3,4-b]pyridines and the Synthetic Utility of the Latter

One-pot and facile preparations of 6-(2-hydroxy-5-R-benzoyl)-4-methyl-2-R(1)- pyrazolo[3,4-b]pyridines 4a-o are described, using the reaction of 3-formyl chromones 1 with 5-amino-1-R(1)-pyrazoles 2. An enamine-intermediate 2-ethyloxy-6-R-3-(3-methyl-1- phenylpyrazol-5-ylaminomethylene)chroman-4-one...

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Detalles Bibliográficos
Autores principales: Lácová, Margita, Puchala, Agnieszka, Solčanyova, Eva, Lac, Jan, Koiš, Pavol, Chovancová, Jarmila, Rasala, Danuta
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2005
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6147667/
https://www.ncbi.nlm.nih.gov/pubmed/18007351
http://dx.doi.org/10.3390/10070809

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