3-Acyl-4-aryl-2-pyrazolines 32-62 have been synthesized by the reaction of α,β- unsaturated ketones 1-31 with diazomethane, The hitherto unknown glycoside acetates 47-52 of some 2-pyrazolines and 4-[3-(2- chloro)quinolinyl]-2- pyrazolines 53-62 have also been prepared.