Abstract
Several new pyrazolo[1,5-a]-S-triazine, pyrazolo[4,5-e]pyrimidine, pyrazolo [1,5-a]pyrimidine derivatives were synthesizedvia condensation of 3-antipyrinyl-5-aminopyrazole (2) with β-bifunctional reagents. The azo analogues of pyrazolo[1,5-a] pyrimidines;i.e pyrazolo[5,1-c]-as-triazine and pyrazolo[5,1-c]-as-benzotriazine were synthesized by coupling of diazotized 2 with agents containing active hydrogen.
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