Rings with a twist: The highly enantioselective construction of five‐membered spiroindolenines has been realized by the iridium‐catalyzed intramolecular allylic dearomatization of indoles. The stereospecific migration of these spiro cyclopentane‐1,3′‐indole products provides enantioenriched 2,3,4,9‐tetrahydro‐1H‐carbazoles.
扭曲的环:五元螺环
吲哚烯的高度对映选择性结构是通过
铱催化的
吲哚分子内烯丙基
芳烃脱芳香作用实现的。这些螺
环戊烷-1,3'-
吲哚产物的立体定向迁移提供了对映体富集的2,3,4,9-四氢-1 H-
咔唑。