5-chloro-2-(4-methylpent-3-enyl)-1H-indole 、
methyl 3-phenylbicyclo[1.1.0]butane-1-carboxylate 在
silver trifluoromethanesulfonate 作用下,
以
氯仿 为溶剂,
以42 %的产率得到methyl (1S,3S,3aS,8bS)-7-chloro-3a-(4-methylpent-3-en-1-yl)-3-phenyl-3,3a,4,8b-tetrahydro-1,3-methanocyclopenta[b]indole-1(2H)-carboxylate