Reactions of substituted 3-(diethylamino)propan-1-ones hydrochlorides with 2-aminobenzamide, 2-amino-1-(4-nitrophenyl)propane-1,3-diol and some amino acids afforded the corresponding beta-amino-ketones. 2,2'-{1,omega-alkane -diylbis[oxy-4, 1-pheny lene (3-oxo-3,1-propanediyl)imino]} bisbenzamides were synthesized in the same way. Anti-MAO activity of the synthesized compounds was studied.