4-bromo-2-iodo-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl trifluoromethanesulfonate 、
tert-butyl 2-ethyl-1H-pyrrole-1-carboxylate 在
lithium chloro-isopropyl-magnesium chloride 作用下,
以
四氢呋喃 、
乙醚 为溶剂,
反应 0.58h,
以72%的产率得到t-butyl 7-bromo-1-ethyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,4-dihydro-1,4-epiminonaphthalene-9-carboxylate