Preparation and Characterization of Pyrazolo [1, 5??a] Pyrimidines

…, H Taghret, JJ Vanden Eynde

Index: Maquestiau, A.; Taghret, H.; Eynde, J.-J. vanden Bulletin des Societes Chimiques Belges, 1992 , vol. 101, # 2 p. 131 - 136

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Citation Number: 6

Abstract

Abstract 1-Phenyl-1, 3-butanedione readily reacts with 3 (5)-amino-1H-pyrazoles to yield mixtures of pyrazolo [1, 5-a] pyrimidines which are identified by 1 H nmr. Selective preparation of 5-methy1-7-phenylpyrazolo [1, 5-a] pyrimidines can be achieved when 3- amino-1-pheny1-2-buten-1-one is used instead of the 1, 3-dicarbonyl precursor.