4-苄氧基-2(1H)-吡啶酮 、 tert-butyl 9-bromo-4,5-dihydro-1H-benzofuro[3,2-c]azepine-2(3H)-carboxylate 以to provide the title compound (130 mg, 32%) as an off-white solid的产率得到tert-Butyl 9-(4-(benzyloxy)-2-oxopyridin-1(2H)-yl)-4,5-dihydro-1H-benzofuro[3,2-c]azepine-2(3H)-carboxylate