Under the influence of Lewis acid catalysis, donor/acceptor cyclopropanes underwent nucleophilic ring opening by indolines. The resulting N-alkyl indolines bearing a pendant malonyl moiety oxidatively cyclized to 1,2-pyrroloindoles. This method was showcased by the preparation of the skeletal structure of the flinderoles.
在
路易斯酸催化的影响下,供体/受体
环丙烷通过二氢
吲哚进行亲核开环。所得的带有侧链丙二酰基部分的N-烷基二氢
吲哚被氧化成1,2-
吡咯并
吲哚。该方法通过制备细针的骨骼结构得以展示。