CuI/N, N-dimethylglycine catalyzed coupling of aryl bromides with substituted oxazolidinones took place at 120° C in DMF, affording the corresponding N-arylation products with good to excellent yields. A number of functional groups, such as ketone, nitrile, nitro, methoxy, and hydroxyl were tolerated under these conditions, thereby allowing diversity synthesis of N-aryloxazolidinones.