Improved Protocol for Indoline Synthesis via Palladium-Catalyzed Intramolecular C(sp<sup>2</sup>)–H Amination
作者:Gang He、Chengxi Lu、Yingsheng Zhao、William A. Nack、Gong Chen
DOI:10.1021/ol301352v
日期:2012.6.15
An efficient method has been developed for the synthesis of indoline compounds from picolinamide (PA)-protected β-arylethylamine substrates viapalladium-catalyzed intramolecular amination of ortho-C(sp2)–H bonds. These reactions feature high efficiency, low catalyst loadings, mild operating conditions, and the use of inexpensive reagents.