Synthesis of oxindoles via Cu-mediated reactions between N -phenylacrylamides and ethyl 2-bromo-2-methylpropionate
作者:Da Liu、Shaobo Zhuang、Xiang Chen、Lin Yu、Yongqi Yu、Liang Hu、Ze Tan
DOI:10.1016/j.tetlet.2017.12.053
日期:2018.2
A novel way of synthesizing alkylated oxindoles via Cu-mediated atom transfer radical addition reaction between N-phenylacrylamides and ethyl 2-bromo-2-methylpropionate has been described. It was found that the use of N,N,N′,N′-1,1,2,2,-tetramethylethylenediamine as ligand was important for achieving good yields. Additionally, the use of DMSO as solvent and running the reaction at 130 °C were also
Copper-catalyzed Meerwein carboarylation of alkenes with anilines to form 3-benzyl-3-alkyloxindole
作者:Shi Tang、Dong Zhou、YouLin Deng、ZhiHao Li、You Yang、JianGuang He、YingChun Wang
DOI:10.1007/s11426-014-5158-z
日期:2015.4
A simple and direct route for double C-C bond formation by copper-catalyzed Meerweincarboarylation process has been developed. In the presence of CuI (5 mol%), tert-butyl nitrite and anilines, a wide variety of N-arylacrylamides underwent tandem Meerwein arylation/C-H cyclization to produce pharmaceutically important 3-benzyl-3-alkyloxindole in moderate to good yield.