Highly Stable, Recyclable Copper Nanoparticles as Catalysts for the Formation of CN Bonds

Running with copper: 4‐dimethylaminopryidine‐stabilized Cu nanoparticles (DMAP‐CuNPs) are used to catalyze the formation of CN bonds. The catalytic reaction proceeds as in a homogeneous system, whereas, the catalyst can be separated and recycled as in heterogeneous catalysis. A five‐run test demonstrates that DMAP‐CuNPs have high stability and recyclability.