3-alkil(aril)-4-[3-(3-nitrobenzoksi)-4metoksibenzilidenamino]-4,5-dihidro-1H-1,2,4 triazol-5-on bileşiklerinin yeni N-Mannich bazlarının sentezi ve bazı özelliklerinin incelenmesi Synthesis,characterization and investigation of some properties of some new N-Mannich bases of 3-alkyl (aryl)-4-[3-(3-nitrobenzoxy)-4metoxybenzyldenamino]-4,5-dihydro-1H-1,2,4-triazol-5-one