A series of 1,3,5-triaryl-2-pyrazolines has been synthesized by the reaction of some alpha,beta-unsaturated ketones with phenylhydrazine containing concentrated hydrochloric acid in the absolute ethanol. The structure of the obtained compounds was confirmed by IR, NMR spectra. The 1,3,5-triaryl-2-pyrazolines were found to possess fluorescence properties in the blue region when irradiated with ultraviolet radiation.