Mild and efficient synthesis of isoindigo derivatives catalyzed by Lewis acid
作者:Meilin Liu、Shaozhong Qiu、Yu Ye、Guodong Yin
DOI:10.1016/j.tetlet.2016.11.053
日期:2016.12
A mild and efficient ZrCl4-catalyzed synthesis of isoindigo derivatives from isatins and indolin-2-ones in refluxing ethanol is described. A variety of new functionalized isoindigo derivatives are obtained by simple filtration. Lewis acid was first used as catalyst in the synthesis of isoindigo derivatives.