Copper(I) 3-methylsalicylate (CuMeSal) mediates N-arylation reactions between aryl boronic acids and aromatic heterocycles (Chan-Lam coupling) under moderate reaction conditions (K 2 CO 3 , methanol, 65 C, in air, 3-5 h). Both electron-rich and electrondeficient aryl boronic acids and a diverse set of N-heterocycles were allowed to react and gave N-arylation products in reasonable yields, which demonstrate the utility of this catalyst.