7-Bromo-5,6-dimethoxy-2-[4-(2,6,6-trimethylcyclohexen-1-yl)butan-2-yl]-1-benzofuran 在
氯磺酸 作用下,
以
2-硝基丙烷 为溶剂,
反应 0.5h,
生成 (2S,7S,10R)-14-bromo-15,16-dimethoxy-2,6,6,10-tetramethyl-12-oxatetracyclo[9.7.0.02,7.013,18]octadeca-1(11),13,15,17-tetraene 、 (2S,7S,10S)-14-bromo-15,16-dimethoxy-2,6,6,10-tetramethyl-12-oxatetracyclo[9.7.0.02,7.013,18]octadeca-1(11),13,15,17-tetraene