Chemoselective <i>sp</i><sup>2</sup>-<i>sp</i><sup>3</sup> Cross-Couplings: Iron-Catalyzed Alkyl Transfer to Dihaloaromatics
作者:Sushant Malhotra、Pamela S. Seng、Stefan G. Koenig、Alan J. Deese、Kevin A. Ford
DOI:10.1021/ol401508u
日期:2013.7.19
The chemoselective functionalization of a range of dihaloaromatics with methyl, cyclopropyl, and higher alkyl Grignard reagents via iron-catalyzed cross-coupling is described. The site selectivity of C-X (X = halogen) activation is determined by factors such as the position of the halogen on the ring, the solvent, and the nucleophile. A one-pot protocol for the chemoselective synthesis of mixed dialkyl heterocycles is achieved solely employing iron catalysis.