SYNTHESIS OF PYRAZOLO[1,5-A]PYRIMIDINES IN THE REACTION OF 5-AMINO-3-ARYLPYRAZOLES WITH METHOXYMETHYLENE MELDRUMS ACID-DERIVATIVES AND THERMOLYSIS OF THEIR PYRAZOLYLAMINOMETHYLENE DERIVATIVES

Authors
QUIROGA J HORMAZA A INSUASTY B
Citation
J. Quiroga et al., SYNTHESIS OF PYRAZOLO[1,5-A]PYRIMIDINES IN THE REACTION OF 5-AMINO-3-ARYLPYRAZOLES WITH METHOXYMETHYLENE MELDRUMS ACID-DERIVATIVES AND THERMOLYSIS OF THEIR PYRAZOLYLAMINOMETHYLENE DERIVATIVES, Journal of heterocyclic chemistry, 35(1), 1998, pp. 61-64
Citations number
15
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Journal of heterocyclic chemistry → ACNP
ISSN journal
0022152X
Volume
35
Issue
1
Year of publication
1998
Pages
61 - 64
Database
ISI
SICI code
0022-152X(1998)35:1<61:SOPITR>2.0.ZU;2-6
Abstract
A series of pyrazolo[1,5-a]pyrimidin-3-ones 3 was prepared from Meldru m's acid and 5-amino-3-arylpyrazoles 1 by cyclization in nitrobenzene of the corresponding 5-pyrazolylaminomethylene Meldrum's acid derivati ves 2. The structure of pyrazolo[1,5-a]pyrimidin-3-ones and their prec ursors were determined by nmr measurements.