O-(2-fluoro-4-bromophenyl)hydroxylamine hydrochloride 、
N-叔丁氧羰基-4-哌啶酮 在
SiO2 、 hexanes ethyl acetate 作用下,
以provided tert-butyl 6-fluoro-8-bromo-3,4-dihydrobenzofuro[3,2-c]pyridine-2(1H)-carboxylate (320 mg, 14%) as an off-white solid的产率得到tert-butyl 6-fluoro-8-bromo-3,4-dihydrobenzofuro[3,2-c]pyridine-2(1H)-carboxylate