Asymmetric Synthesis of 3-Allyloxindoles and 3-Allenyloxindoles by Scandium(III)-Catalyzed Claisen Rearrangement Reactions
作者:Zeng-Wei Lai、Chuan Liu、Hongbin Sun、Shu-Li You
DOI:10.1002/cjoc.201700486
日期:2017.10
Scandium‐catalyzed asymmetric Claisen rearrangement reactions of 2‐allyloxyindoles and 2‐propargyloxyindoles provide a novel approach to diverse 3‐allyloxindoles and 3‐allenyloxindoles in excellent yields (up to 99%) and enantioselectivity (up to 99% ee) under mild reaction conditions. The scandium catalyst was derived from Sc(OTf)3 and Pybox ligand.
在温和的反应条件下,催化的2-烯丙氧基吲哚和2-炔丙氧基吲哚的不对称克莱森重排反应提供了一种新颖的方法,以优异的收率(高达99%)和对映选择性(高达ee的99%)对各种3-烯丙氧基吲哚和3-烯丙基氧吲哚进行了反应。 。catalyst催化剂衍生自Sc(OTf)3和Pybox配体。