Palladium-Catalyzed C–C Bond Formation of Arylhydrazines with Olefins via Carbon–Nitrogen Bond Cleavage

The unactivated carbon–nitrogen bond of various aryl hydrazines was cleaved under very mild conditions by Pd(0) with the assistance of Pd(II). The in situ generated aryl palladium complex readily takes part in the C–C bond formation with olefins. This study offered a new mode of C–Pd bond formation, which will spur the development of palladium-catalyzed cross-coupling in the future.