Lewis Acid Acceleration of C−N Bond-Forming Reductive Elimination from Heteroarylpalladium Complexes and Catalytic Amidation of Heteroaryl Bromides
作者:Qilong Shen、John F. Hartwig
DOI:10.1021/ja0722473
日期:2007.6.1
addition of Lewisacids is described. Several lines of data imply that this effect arises from coordination of the Lewisacid to the nitrogen of the heteroaryl group. The presence of this coordination was confirmed by isolation of a Lewisacid base complex with a borane coordinated to the pyridyl nitrogen. This adduct underwent reductive elimination faster than the complex lacking the Lewisacid, and it