Zinc Acetate-Promoted Buchwald–Hartwig Couplings of Heteroaromatic Amines

Zinc salts have been shown to promote the Buchwald–Hartwig coupling of azaindoles and azaindazoles with heteroaryl chlorides to provide the corresponding 1-aryl-1H-azaindoles and 1-aryl-1H-azaindazoles. The substrate scope and mechanistic aspects of this reaction were explored.