Cu-Catalyzed three-component coupling reactions using nitriles, 1,3-dienes and silylboranes

This paper reports novel Cu-catalyzed three-component coupling reactions using nitriles, 1,3-dienes and silylboranes. The desired reactions proceed at room temperature and yield β,γ-unsaturated ketones with a (dimethylphenylsilyl)methyl moiety at the α-position. Diverse nitriles participate in the reaction and the corresponding products were obtained in good to high yields with high regioselectivity. Novel Cu-catalyzed three-component coupling reactions using nitriles, 1,3-dienes and silylboranes have been achieved. The desired reactions proceed at room temperature and yield β,γ-unsaturated ketones.