1-benzoyl-5-(substituted phenyl)-{3-[4-(2-methyl-4-benzylidene-5-oxo-imidazol-1-yl)] phenyl}-4,5-dihydropyrazol have been prepared by the reaction between 5-(substituted phenyl)-{3-[4-(2-methyl-4-benzylidene-5-oxo-imidazol-1-yl)]phenyl}-4,5 -dihydropyrazol and benzoyl chloride in presence of dry pyridine at room temperature the intermediate P-3 have been prepared by the refluxation for three hours of 4-benzylidene-1-{4-[3-(substituted phenyl)prop-2-enoyl]phenyl}-2-methyl-imidazol-5-one with hydrazine hydrate in presence of ethanol the intermediate P-2 have been synthesized by the condensation of 1-(4-acetylphenyl)-4-benzylidene-2-methyl-imidazol-5-one with various aldehydes.