β-Arylation of Carboxamides via Iron-Catalyzed C(sp<sup>3</sup>)–H Bond Activation
作者:Rui Shang、Laurean Ilies、Arimasa Matsumoto、Eiichi Nakamura
DOI:10.1021/ja402806f
日期:2013.4.24
A 2,2-disubstituted propionamide bearing an 8-aminoquinolinyl group as the amide moiety can be arylated at the beta-methyl position with an organozinc reagent in the presence of an organic oxidant, a catalytic amount of an iron salt, and a biphosphine ligand at 50 degrees C. Various features of selectivity and reactivity suggest the formation of an organometallic intermediate via rate-determining C-H bond cleavage rather than a free-radical-type reaction pathway.