▎ 摘　　要

The catalytic performance of L-tyrosine-grafted graphene copper (Tyr-G-Cu) was investigated in the N-arylation of nitrogen heterocycles. In the presence of this catalyst, the N-arylation proceeded smoothly and afforded the desired coupling products with good yields, respectively. Meanwhile, the catalyst was reused five times without remarkable loss of activity. Finally, the plausible heterogeneous recycle process of catalyst was identified by typical hot filtration test.