Rhodium-catalyzed alkylation of aromatic azines with alkenes via C–H bond activation

The aromatic azines reacted with terminal alkenes under a rhodium catalyst [RhCl(coe)2]2 and Cy3P to give the alkylated products with good to high isolated yields. The azines bearing H and o-CH3, p-CH3 and p-CH3O groups have high reactivities, but m-CH3O, p-Cl, p-F exhibit low reactivities.