Synthesis of pyrazolo[1,5‐ a ]pyrimidines in the reaction of 5‐amino‐3‐arylpyrazoles with methoxymethylene meldrum's acid derivatives and thermolysis of their pyrazolylaminomethylene derivatives | Zendy

Quiroga Jairo | Zendy; Hormaza Angelina | Zendy; Insuasty Braulio | Zendy; Saitz Claudio | Zendy; Cañete Alvaro | Zendy; Jullian Carolina | Zendy

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Synthesis of pyrazolo[1,5‐ a ]pyrimidines in the reaction of 5‐amino‐3‐arylpyrazoles with methoxymethylene meldrum's acid derivatives and thermolysis of their pyrazolylaminomethylene derivatives

Author(s) -

Quiroga Jairo,

Hormaza Angelina,

Insuasty Braulio,

Saitz Claudio,

Cañete Alvaro,

Jullian Carolina

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.5570350112

Subject(s) - chemistry , meldrum's acid , nitrobenzene , thermal decomposition , organic chemistry , catalysis

A series of pyrazolo[1,5‐ a ]pyrimidin‐3‐ones 3 was prepared from Meldrum's acid and 5‐amino‐3‐arylpyrazoles 1 by cyclization in nitrobenzene of the corresponding 5‐pyrazolylaminomethylene Meldrum's acid derivatives 2 . The structure of pyrazolo[1,5‐ a ]pyrimidin‐3‐ones and their precursors were determined by nmr measurements.

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