A range of arylallenes undergo carbocation-initiated cyclization reaction with N-benzylic and N-allylic sulfonamides in the presence of 10 mol% ferric chloride to give structurally diverse polysubstituted indenes in good yields with extremely high regioselectivity.
一系列芳基烯丙基化合物在10 mol%的
氯化
铁存在下,与N-苄基和N-烯丙基磺酰胺发生碳阳离子引发的环化反应,生成结构多样的多取代
茚类化合物,产率良好且区域选择性极高。