Metal free oxidative halogenation of N-aryl enaminones has been demonstrated using a DMSO–halo acid combination under mild reaction conditions. This strategy allows a facile halogenation of enaminones through α functionalization leading to a broad range of α-halo-N-aryl substituted enaminones in good to excellent yields in a short period of time. Additionally, the use of readily available and inexpensive
Gold-catalyzed chemo- and diastereoselective C(sp<sup>2</sup>)–H functionalization of enaminones for the synthesis of pyrrolo[3,4-c]-quinolin-1-one derivatives
作者:Yulei Zhao、Qizhao Duan、Yuanyuan Zhou、Qiyi Yao、Yanzhong Li
DOI:10.1039/c5ob02556g
日期:——
enaminones with diazo compounds for the synthesis of pyrroloquinolinone derivatives under mild reaction conditions has been developed. This methodology was realized by relay actions of Au and TsOH in a one-pot multistep manner. Initially, the Au-catalyzed reaction of enaminones with diazo compounds affords chemo- and diastereoselective C(sp2)–H functionalized products, which then undergo subsequent
An oxidative free-radical C(sp2)–H bond chlorination strategy of enaminones has been developed by using LiCl as a chlorinating reagent and K2S2O8 as an oxidant. This transformation provides a new and straightforward synthetic methodology to afford highly functionalized α-chlorinated enaminones with a Z-configuration in good to excellent yields.
以LiCl为氯化剂、K 2 S 2 O 8为氧化剂,开发了烯胺酮的氧化自由基C(sp 2 )–H键氯化策略。这种转化提供了一种新的、简单的合成方法,以良好至优异的产率提供具有Z构型的高度官能化的 α-氯化烯胺。