126362-33-2

Upstream product

• 76043-32-8 3-amino-4-(2-(4-chlorophenyl)hydrazono)-1H-pyrazol-5(4H)-one 
• 107-13-1 acrylonitrile 
• 3994-24-9 ethyl α-cyano-α-(p-chlorophenylhydrazono)glyoxalate 
• 126362-27-4 3-{3-Amino-4-[(4-chloro-phenyl)-hydrazono]-5-oxo-4,5-dihydro-pyrazol-1-yl}-propionitrile 
• 126362-30-9 3-[3-Amino-4-(4-chloro-phenylazo)-2-(2-cyano-ethyl)-5-oxo-2,5-dihydro-pyrazol-1-yl]-propionitrile 

Relevant academic research and scientific papers

Studies on Aminoazoles : Synthesis of Pyrazolopyrimidines and Their Aza Derivatives

The reaction of 4-arylazo-3-aminopyrazol-5-ones (1a-i) with α,β-unsaturated nitriles, active methylene reagents and nitrile imines are reported.They lead to new polyfunctional derivatives of pyrazolopyrimidine (5a-c, 6, 10a-i, 13a-c, 14a-c, 17a-d,