Abstract Coumarins are important and useful compounds with diverse pharmacological properties. New coumarin derivatives namely N-aminoquinoline-2-one 1, 1-((4-hydroxy-6- methyl-2-oxo-2H-pyran-3-yl) methyleneamino) quinolin-2 (1H)-one 2 and 1, 1′-(1E, 1′ E)- (1, 4-phenylenebis (methan-1-yl-1-ylidene)) bis (azan-1-yl-1-ylidene) diquinolin-2 (1H)-one 3, were synthesized and characterized by UV–Vis, FT-IR, and NMR spectra in addition of ...