1606-53-7Relevant academic research and scientific papers
Solvent-free condensation of aromatic aldehydes and 2,3-dimethyl-1-phenyl-3-pyrazolin-5-one by p-toluenesulfonic acid
Koshima, Hideko,Hamada, Mitsuo
, p. 1087 - 1088 (2007/10/03)
Solvent-free condensation easily occurred by mixing aromatic aldehydes and 2,3-dimethyl-1-phenyl-3-pyrazoline-5-one (antipyrine) in the presence of p-toluenesulfonic acid as a solid acid catalyst at room temperature to give the corresponding disubstituted
REACTION OF SCHIFF BASES OBTAINED FROM 4-AMINOANTIPYRINE AND 4-AMINO-1,2,4-TRIAZOLE WITH KETONES
Letunov, V. I.
, p. 145 - 149 (2007/10/02)
With acetophenone and p-nitroacetophenone in alcohol and benzene media in the presence of acid N-arylidene-4-aminoantipyrines form α,β-unsaturated ketones, and with antipyrine the form aryldiantipyrylmethanes.With the same ketones N-arylidene-4-amino-1,2,4-triazoles form the products from addition at the azomethine bond.In both cases reaction with benzylideneacetone was not detected.
