Domino Cyclodimerization of Indole-Derived Donor-Acceptor Cyclopropanes: One-Step Construction of the Pentaleno[1,6-a,b]indole Skeleton
作者:Olga A. Ivanova、Ekaterina M. Budynina、Alexey O. Chagarovskiy、Eduard R. Rakhmankulov、Igor V. Trushkov、Alexander V. Semeykin、Nikolay L. Shimanovskii、Mikhail Ya. Melnikov
DOI:10.1002/chem.201101687
日期:2011.10.10
The fellowship of the rings: The previously undiscovered ability of indole‐derived donor–acceptor cyclopropanes to involve four reaction centers simultaneously was revealed by their domino cyclodimerization (see scheme). This SnCl4‐induced reaction affords bisindole products with the pentaleno[1,6‐a,b]indole framework. In the course of this process, two new rings, three CC bonds, and four stereocenters
环的团契:以前未被发现的吲哚衍生的供体-受体环丙烷同时参与四个反应中心的能力通过其多米诺环二聚反应得以揭示(参见方案)。SnCl 4诱导的反应提供了具有pentaleno [1,6- a,b ]吲哚骨架的双吲哚产物。在此过程中,形成了两个新的环,三个CC键和四个立体中心,它们具有出色的化学,区域和立体选择性。