Schiff base compounds are gaining importance daily in this scenario due to their various biological and catalytic activities. In this study, an efficient and eco-friendly synthesis of N-benzylideneaniline was carried out in polyethene glycol (PEG-400) as a greener medium at room temperature. PEG400 was inexpensive and non-toxic, providing a high yield and efficient medium for the synthesis of Schiff bases with excellent outcomes. Furthermore, FT-IR spectroscopy is used to characterize the newly created Schiff base. The recyclability of the catalyst was also studied up to six cycles.