Elude de la réaction du β-aminocrotonitrile et du α-formyl phénylacétonitrile avec l'hydrazine: Synthèse d'amino-7 pyrazolo[1,5-a]pyrimidines

The three compounds C₈ H₁₀N₄ which arise from reaction of hydrazine and β-aminocrotonitrile have been identified: the formation of anazine, a 3(5)-amino 5(3)-methyl pyrazole derivative and a 7-amino pyrazolo 1,5-a] pyrimidine has been demonstrated. The relationships among these compounds and with the methyl-aminopyrazole have been studied.