An Exploration of Organocatalyst 1,4-Diazabicyclo[2.2.2]octane in the Direct Regioselective and Chemoselective γ-Addition of β-Keto Amide on Isatin to Afford Structurally Diverse Molecular Frameworks
作者:Pramod B. Thakur、Harshadas M. Meshram
DOI:10.1071/ch14239
日期:——
chemoselective γ-addition of β-keto amides on isatins to afford γ-(3-hydroxy-2-oxindole)-β-keto amide structural framework under metal-free conditions. The developed method is mild, generates high yields, and is applicable for a variety of isatin electrophiles as well as β-keto amides. Moreover, the procedure is very handy and environmentally benign in nature, and provides direct access for the synthesis of
描述了一种由1,4-二氮杂双环[2.2.2]辛烷促进的有效方案,用于将β-酮酰胺在区域上进行区域选择性和化学选择性的γ加成,得到γ-(3-羟基-2-氧吲哚)-β-酮无金属条件下的酰胺结构框架。所开发的方法温和,收率高,并且适用于多种Isatin亲电试剂以及β-酮酰胺。而且,该方法本质上非常方便并且对环境无害,并且提供了从容易获得的起始原料合成各种官能化的3-β-酮酰胺取代的3-羟基-2-氧吲哚结构支架的直接途径。