Different pyrazoline derivatives were synthesized by cyclization of substituted chalcones with Hydrazine hydrate. Some new N-(4-(3-Aryl-acryloyl)phenyl)cyclopropane carboxamide (1a-l) and N-(4-(5-Aryl-4,5-dihydro-1H-pyrazol-3-yl)phenyl)cyclopropane carboxamide (2a-l) were prepared. All the prepared compounds were characterized by their spectral (I.R., N.M.R., Mass) data and screened for their antimicrobial activities.
