Enantioselective Synthesis of Spiro Cyclopentane-1,3′-indoles and 2,3,4,9-Tetrahydro-1H-carbazoles by Iridium-Catalyzed Allylic Dearomatization and Stereospecific Migration
作者:Qing-Feng Wu、Chao Zheng、Shu-Li You
DOI:10.1002/anie.201107677
日期:2012.2.13
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。