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Pyrazoles as Building Blocks in Heterocyclic Synthesis: Synthesis of Some New Substituted 1-Triazinylpyrazolo[3,4-d]pyrimidine and 1-Triazinylpyrazolo[3,4-b]pyridine Derivatives

A.-F. A. Harb, H. H. Abbas, and F. H. Mostafa

Department of Chemistry, Faculty of Science (Qena), South Valley University, Qena, 83523, Egypt

 

E-mail: funnytostos@hotmail.com

Received: 19 January 2004

Abstract: Several new pyrazolo[3,4-d]pyrimidines and pyrazolo[3,4-b]pyridine derivatives were prepared by condensation of 5-amino-1-(5,6-diphenyl-1,2,4-triazin-3-yl)-1H-pyrazole-4-carbonitrile with succinic anhydride, acetic anhydride, γ-chlorobutyl chloride, succinyl chloride, formic acid—formamide mixture, formamide, and active methylene reagents such as malononitrile, ethyl cyanoacetate, and ethyl acetoacetate under different reaction conditions.

Full paper in Portable Document Format: 593a187.pdf

 

Chemical Papers 59 (3) 187–195 (2005)

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