Zinc-Mediated C-3 α-Prenylation of Isatins with Prenyl Bromide: Access to 3-Prenyl-3-hydroxy-2-oxindoles and Its Application
作者:Li-Ming Zhao、Ai-Li Zhang、Jie-Huan Zhang、Hua-Shuai Gao、Wei Zhou
DOI:10.1021/acs.joc.6b00836
日期:2016.7.1
A convenient and highly α-regioselective strategy for the synthesis of 3-prenyl-3-hydroxy-2-oxindoles has been developed starting from isatins and prenylzinc with good to excellent yields. This protocol provides a straightforward and practical way to introduce an α-prenyl moiety into the C-3 position of isatins. The advantages of this reaction are use of the cheap and readily available reagents, operational
从靛红和异戊烯基锌开始,已经开发了一种方便且高度α-区域选择性的合成3-异戊烯基-3-羟基-2-氧吲哚的策略,其收率良好。该方案提供了将α-异戊二烯基部分引入靛红的C-3位的直接而实用的方法。该反应的优点是使用便宜且容易获得的试剂,操作简便和底物范围广。此外,该转化被应用于几种含羟吲哚的天然产物的合成,这进一步证明了该方法的合成效用。