Palladium-Catalyzed sp<sup>3</sup> C—H Activation of Simple Alkyl Groups: Direct Preparation of Indoline Derivatives from <i>N</i>-Alkyl-2-bromoanilines
The sp3 C-H activation of a simple alkyl group catalyzed by palladium(0) provides a novel and convenient strategy for the synthesis of various indolinesfrom simple precursors, such as N-alkyl-2-bromoanilines. This study demonstrates that assisting moieties in the substrate such as a pyridine or quaternary carbon are not always necessary for sp3 C-H activation.
Intramolecular Palladium-Catalyzed Alkane C−H Arylation from Aryl Chlorides
作者:Sophie Rousseaux、Michaël Davi、Julien Sofack-Kreutzer、Cathleen Pierre、Christos E. Kefalidis、Eric Clot、Keith Fagnou、Olivier Baudoin
DOI:10.1021/ja1048847
日期:2010.8.11
efficient and general palladium-catalyzed intramolecular C(sp(3))-H arylation of (hetero)aryl chlorides, giving rise to a variety of valuable cyclobutarenes, indanes, indolines, dihydrobenzofurans, and indanones, are described. The use of aryl and heteroaryl chlorides significantly improves the scope of C(sp(3))-H arylation by facilitating the preparation of reaction substrates. Careful optimization studies