Search for Monoamine Oxidase Inhibitors among Pyrazoline and Pyrimidine Derivatives and Studying Luminescent Properties of the Obtained Compounds

Cyclization of the (E)-3-aryl-1-(4-alkoxyphenyl)prop-2-en-1-ones with phenylhydrazine in an acidic medium leads to the 5-aryl-3-(4-alkoxyphenyl)-1-phenyl-4,5-dihydro-1H-pyrazoles. Bubbling air through a solution of 5-(4-methoxyphenyl)-1-phenyl-3-(4-ethoxyphenyl)-4,5-dihydro-1H-pyrazole in ethylcellosolve resulted in an oxidation-dehydrogenation product, which characterized as the picrate of the corresponding pyrazole. The reaction of benzamidine and 4-methylbenzamidine hydrochlorides with substituted chalcones in а KOH–ethanol system leads to 2,4-diaryl-6-(4-alkoxyphenyl)pyrimidines. The luminescent and antimonoamine oxidase properties of the resulting systems were studied.