Fragmented Ultrathin Carbon Buffed Copper Clusters for Selective Hydrogenation of N-Heteroarenes under Ambient Pressure

species ensures efficient and specific transformation. Moreover, Cu/C@MCM-A demonstrates highly selective hydrogenation activities toward other quinoline derivatives, as well as indole, naphthalene, and indene. This work unlocks a unique route for constructing carbon-confined metal clusters to achieve continuous production in selective hydrogenation.