Tetrahedron

One-step reaction leading to new pyrazolo [1, 5-a] pyrimidines by condensation of 2-pyrone with 5 (3)-amino-3 (5)-arylpyrazoles

I Bassoude, S Berteina-Raboin, JM Leger, C Jarry…

Index: Bassoude, Ibtissam; Berteina-Raboin, Sabine; Leger, Jean-Michel; Jarry, Christian; Essassi, El Mokhtar; Guillaumet, Gerald Tetrahedron, 2011 , vol. 67, # 12 p. 2279 - 2286

Full Text: HTML

Citation Number: 14

Abstract

Condensation of 5 (3)-amino-3 (5)-arylpyrazoles with 4-hydroxy-6-methylpyran-2-one leads to 5, 7-dimethyl-2-arylpyrazolo [1, 5-a] pyrimidines, 5-alkoxycarbonylmethyl-7-methyl-2- arylpyrazolo [1, 5-a] pyrimidines and their isomeric 7-alkoxycarbonylmethyl-5-methyl-2- arylpyrazolo [1, 5-a] pyrimidines. These compounds result from competitive reactions and from different cyclization pathways. Structure and mechanism of formation of these new ...

Related Articles:

Catalyst??and Base??Controlled Site??Selective sp2 and sp3 Direct Arylation of 5, 7??Dimethyl??2??phenylpyrazolo [1, 5??a] pyrimidine Using Aryl Bromides

[Bassoude, Ibtissam; Berteina-Raboin, Sabine; Massip, Stephane; Leger, Jean-Michel; Jarry, Christian; Essassi, El Mokhtar; Guillaumet, Gerald European Journal of Organic Chemistry, 2012 , # 13 p. 2572 - 2578]

Pyrimidine Derivatives and Related Compounds, XI: Synthesis of some new Mercaptopyrazolo [1, 5??a] pyrimidines and Mercaptopyrazolo [1, 5??c]??as??triazines

[Elmoghayer; Ibramin; El Sakka; et al. Archiv der Pharmazie, 1983 , vol. 316, # 8 p. 697 - 702]

Chemical and electrochemical reduction of some pyrazolo [1, 5??a] pyrimidines

[Bellec, Christian; Lhommet, Gerard Journal of Heterocyclic Chemistry, 1995 , vol. 32, # 6 p. 1793 - 1800]

More Articles...