tert-butyl 4-(6-chloro-8-methoxy-4-oxo-4,5-dihydrothieno[2,3-c]quinolin-9-yl)-2-fluorophenethylcarbamate 、
三溴化硼 以to afford the desired product as a white solid (26 mg, 48%) 1H NMR (500 MHz, CD3OD) δ 7.67 (d, J=5.4 Hz, 1H), 7.51 (t, J=7.7 Hz, 1H), 7.30 (s, 1H), 7.17-7.11 (m, 2H), 6.18 (d, J=5.4 Hz, 1H), 3.35-3.20 (m, 2H), 3.14-3.04 (m, 1H)的产率得到9-(4-(2-aminoethyl)-3-fluorophenyl)-6-chloro-8-hydroxythieno[2,3-c]quinolin-4(5H)-one hydrochloride