Diastereo- and Enantioselective Construction of Dihydrobenzo[<i>e</i>]indole Scaffolds via Catalytic Asymmetric [3 + 2] Cycloannulations
作者:Can Li、Dan-Ni Xu、Chun Ma、Guang-Jian Mei、Feng Shi
DOI:10.1021/acs.joc.8b01217
日期:2018.8.17
The first catalytic asymmetric construction of chiral dihydrobenzo[e]indole scaffolds has been established in a highly diastereo- and enantioselective mode (30 examples, up to 99% yield, >95:5 dr, >99% ee), which makes use of chiral phosphoric acid-catalyzed [3 + 2] cycloannulations of azonaphthalene derivatives with 3-vinylindoles. This reaction also represents the first catalytic asymmetric cycloannulation
手性二氢苯并[ e ]吲哚骨架的第一个催化不对称结构已经建立在高度非对映和对映选择性的模式下(30个实例,产率高达99%,> 95:5 dr,> 99%ee),它利用了手性磷酸与3-乙烯基吲哚的偶氮萘衍生物的[3 + 2]环环化反应。该反应也代表了氮杂萘衍生物与烯烃的首次催化不对称环环化,这不仅为构建对映体富集的二氢苯并[ e ]吲哚骨架提供了有用的方法,而且还促进了氮杂萘衍生物催化不对称反应的化学反应。