A Facile Method for the Synthesis of Polycyclic Indole Derivatives: The Generation and Reaction of Tungsten-Containing Azomethine Ylides
作者:Hiroyuki Kusama、Jun Takaya、Nobuharu Iwasawa
DOI:10.1021/ja027589h
日期:2002.10.1
with various electron-rich alkenes proceeds smoothly to give unstable carbene complexes, which in turn undergo 1,2-hydrogen-, alkyl-, and aryl-migration to afford in good yield 6-5-5 tricyclic indole skeletons having an alkyl or an aryl substituent at the 3-position of the indole nucleus.
用 W(CO)(5)(L) 处理 N-(邻炔基苯基)亚胺衍生物诱导亚胺氮环化到亲电活化的炔部分上的 5-endo 模式,以提供一种新的活性物质,一种金属-含偶氮甲碱叶立德。该叶立德物种与各种富电子烯烃的 [3 + 2] 环加成反应顺利进行,得到不稳定的卡宾配合物,这些配合物依次进行 1,2-氢-、烷基-和芳基-迁移,得到良好的产率 6-5 -5个三环吲哚骨架在吲哚核的3-位具有烷基或芳基取代基。