Abstract Previous works of our group have dealt with the synthesis of 1-(aryl)-3-[4-(aryl) piperazin-1-yl] propane derivatives in the search for new and efficient antidepressants with a dual mode of action: serotonin reuptake inhibition and 5-HT 1A receptor afinity [1-4]. From these studies we concluded that the 3-[4-(aryl) piperazin-1-yl]-1-(benzo [b] thiophen-3-yl) propane derivatives led to the best results. The continuation of this research project ...