Schiff base derivatives have gained great importance due to revealing a great number of biological properties. Schiffbases were synthesized by treatment of 4‐amino‐1,5‐dimethyl‐2‐phenyl‐1H‐pyrazol‐3(2H)‐one (1) with various aldehydes in methanol at reflux. In addition, diamine was reacted with an aldehyde to yield the corresponding Schiffbases. The structures of synthesized Schiffbases were elucidated