The reaction of diamines with dihalides in basic medium was carried out, leading to the formation of different varieties of both cyclic and acyclic products. in this work, the reaction was directed to form mainly one of them by reacting different diamines with both dichloroethane and dichloromethane as alkylating agents, using two techniques which were compared with each other. The obtained oligomeric products were characterized by using spectroscopic and elemental analyses.