α,β-Unsaturated Nitriles in Heterocyclic Synthesis: Synthesis of Some New Pyrazolopyrimidine Derivatives

Article abstract of DOI:10.1007/BF00816340

3-Antipyrinyl-5-aminopyrazole (1) reacted with acrylonitrile to afford 5-amino-1-β-cyanoethyl-3-antipyrinylpyrazole (2).Compound 2 could also be obtained from the reaction of β-cyanoethylhydrazine (3) and compound 4. 2 was readily cyclized into 2-antipyri