Keywords: 5-Pyrazolone.Synth.1.svg ru Синтез 5-пи� азолонов получение фенилметил-4 5-дигид� о-1H-пи� азол-5-она конденсацией ацетоуксусного эфи� а с фенилгид� азином en 5-Pyrazolone synthesis phenylmethyl-4 5-dihydro-1H-pyrazol-5-onу by condensation of acetoacetic ester with phenylhydrazine 2011-12-28 own Kurgus Uploaded with UploadWizard Phenylhydrazine Acetoacetate esters Pyrazolones |