UV spectra of benzofuro[3,2-b]quinolin-10(5H)-one (2), 5-methylbenzofuro[3,2-b]quinolin-10(5H)-one (6), and 10-methoxybenzofuro[3,2-b]quinoline (7) are given below togetner with the spectra of 2-phenylquinolin-4(1H)-one (1), its N-methyl derivative, and 3-amino-2-benzoylbenzofuran.

 UV spectrum of benzofuro[3,2-b]quinolin-10(5H)-one (2)

UV spectrum of 5-methylbenzofuro[3,2-b]quinolin-10(5H)-one (6)

UV spectrum of 10-methoxybenzofuro[3,2-b]quinoline (7)

UV spectrum of 2-phenylquinolin-4(1H)-one (1)

UV spectrum of 1-methyl-2-phenylquinolin-4(1H)-one

UV spectrum of 3-amino-2-benzoylbenzofuran