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The graphene supported Cu2O nanoparticles were prepared via a two-step liquid-phase method and exhibited high catalytic activity and stability for the Ullmann coupling of aryl halides with N–H containing compounds… Click to show full abstract
The graphene supported Cu2O nanoparticles were prepared via a two-step liquid-phase method and exhibited high catalytic activity and stability for the Ullmann coupling of aryl halides with N–H containing compounds under mild and ligand-free conditions. The yield of C–N cross-coupling of imidazole with iodobenzene reached up to 97% with 0.5 mol% Cu (vs. reported 5–10 mol%). The high activity and stability of Cu2O/graphene are probably due to the unique structure of graphene, which can make Cu2O nanoparticles highly dispersed and prevent them from aggregation and oxidation.
Journal Title: Catalysis Surveys from Asia
Year Published: 2018
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