N-(4-[4-{2, 3-dichlorophenyl}-1-piperazinyl] butyl)-3-fluorenylcarboxamide and N-(4-[4-{2, 3- dichlorophenyl}-1-piperazinyl] butyl)-2-biphenylenylcarboxamide were prepared in several steps from 2, 3-dichloroaniline. These compounds were identified as highly selective dopamine D3 receptor antagonists.