9-bromo-8-methoxythieno[2,3-c]quinolin-4(5H)-one 、 (1-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)cyclobutyl)methylcarbamic acid tert-butyl ester 以to afford the desired product (1.5 g, 33%) as a light brown solid的产率得到tert-butyl (1-(4-(8-methoxy-4-oxo-4,5-dihydrothieno[2,3-c]quinolin-9-yl)phenyl)cyclobutyl)methylcarbamate