Reaction of 5‐aminopyrazoles with β‐dimethylaminopropiophenones. Synthesis of new pyrazolo[3,4‐ b ]pyridines | Zendy

Quiroga J. | Zendy; Insuasty B. | Zendy; Cruz S. | Zendy; Hernandez P. | Zendy; Bolaños A. | Zendy; Moreno R. | Zendy; Hormaza Angelina | Zendy; de Almeida Regina H. S. | Zendy

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Reaction of 5‐aminopyrazoles with β‐dimethylaminopropiophenones. Synthesis of new pyrazolo[3,4‐ b ]pyridines

Author(s) -

Quiroga J.,

Insuasty B.,

Cruz S.,

Hernandez P.,

Bolaños A.,

Moreno R.,

Hormaza Angelina,

de Almeida Regina H. S.

Publication year - 1998

Publication title -

journal of heterocyclic chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.321

H-Index - 59

eISSN - 1943-5193

pISSN - 0022-152X

DOI - 10.1002/jhet.5570350213

Subject(s) - chemistry , pyridine , aryl , medicinal chemistry , stereochemistry , organic chemistry , alkyl

Several new pyrazolo[3,4‐ b ]pyridines were obtained from the reaction of 5‐amino‐1‐aryl‐3‐methylpyrazoles 1 with β‐dimemylaminopropiophenones 2 in pyridine. The structure elucidation of 4,5‐dihydropyrazolo[3,4‐ b ]pyridines 3 is based on nmr measurements and X‐ray diffraction. The treatment of compounds 3 with N ‐bromosuccinimide led to the formation of pyrazolo[3,4‐ b ]pyridines 4 .

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