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

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.

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Bibliographic Details
Published in:Tetrahedron letters 2011-07, Vol.52 (28), p.3648-3650
Main Authors: Samar, Chtiba, Fayçel, Jemmezi, Jameleddine, Khiari
Format: Article
Language:English
Subjects:
2-Phenyl-3-oxo-2,3-dihydropyrazolo[3,4-b]pyridine-5-carbaldehyde
2-Phenyl-5-aryl-2,3-dihydropyrazolo[3,4-b]pyridin-3-ones
Chemistry
Condensing
Exact sciences and technology
Heterocyclic compounds
Heterocyclic compounds with only one n hetero atom and condensed derivatives
Heterocyclic compounds with several n hetero atoms in the same ring, in separated rings or in fused rings
Heterocyclocondensation
Organic chemistry
Preparations and properties
Synthesis (chemistry)
Tetrahedrons
Vinamidinium salts
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Description
Summary: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.
ISSN:0040-4039
1873-3581
DOI:10.1016/j.tetlet.2011.05.024