Source of material Asolutionof4-Iodoaniline (1.2 mmol) and 4-benzoyl-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one (1 mmol) in ethanol (10 mL) was refluxed for 5ha nd ay ellow precipitate was gradually formed. After cooled to room temperature, the mixture was filtrated and the collected solid was washed with additional ethanol and dried in the air. Suitable crystals were obtained by evaporation of an ethanol/dichloromethane (1:1) solution.