Unsymmetrical bridged terphthaloyl p-substituted acetophenone oxime esters 1 – 3 have been synthesized throughout an esterification reaction between three different para-substituted acetophenone oximes and the terphthaloyl chloride in a molar ratio of (2:1) under mild basic conditions. Spectroscopic techniques, such as IR, HNMR and mass spectrometer, were utilized to confirm the structures of these oxime esters. The yields of the synthesized oxime esters ranged from 70% to 89%.