In current research, five series of mono- and di-substituted piperazinederivatives have been synthesized. For di-substituted derivatives, ciprofloxacin was selected and hybrids were synthesized via substitution at piperazinyl-N4. In vitro antibacterial studies of all synthesized compound were carried out against American Type Culture Collection (ATCC) strains; E. coli (ATCC 25922), P. aeruginosa (ATCC