Convenient synthesis of pyrazolo[3,4-b]pyridin-3-ones and pyrazolo[3,4-b]pyridine-5-carbaldehyde using vinamidinium salts

Autor: Chtiba Samar, Khiari Jameleddine, Jemmezi Faycel
Rok vydání: 2011
Předmět:
Zdroj: Tetrahedron Letters. 52:3648-3650
ISSN: 0040-4039
DOI: 10.1016/j.tetlet.2011.05.024
Popis: An expedient method for the synthesis of 2-phenyl-5-aryl-2,3-dihydropyrazolo[3,4-b]pyridin-3-ones and 2-phenyl-3-oxo-2,3-dihydropyrazolo[3,4-b]pyridine-5-carbaldehyde in a single-step via condensation of vinamidinium salts with 3-amino-1-phenyl-2-pyrazolin-5-one is described.
Databáze: OpenAIRE