A mild, selective, and efficient protocol for the synthesis of gamma-aminoalkyl butenolides via the oxidative coupling between tertiary amines and siloxyfurans catalyzed by simple copper salts was developed. Compared with the reported method, our method employs copper catalyst instead of the expensive rhodium catalyst. Besides TBHP, both O-2 and H2O2 can also be utilized as oxidant to effect the coupling. (C) 2008 Elsevier Ltd. All rights reserved.
Simple and Sustainable Iron-Catalyzed Aerobic C–H Functionalization of <i>N</i>,<i>N</i>-Dialkylanilines
作者:Maxim O. Ratnikov、Xinfang Xu、Michael P. Doyle
DOI:10.1021/ja402479r
日期:2013.6.26
chloride catalyzes the aerobic oxidation of tertiary anilines, including tetrahydroisoquinolines, to form reactive iminium ion intermediates that undergo Mannich reactions with silyloxyfurans, nitroalkanes, and other nucleophiles to give the corresponding butenolides, nitro compounds, and α-substituted tetrahydroisoquinolines, respectively, in good to excellent yields.