Ultrasound-Assisted Synthesis of Benzimidazole Derivatives: A Catalyst-Free Green Chemistry Approach

A green and effective catalyst-free ultrasound-assisted synthetic methodology for benzimidazole derivatives has been developed. A total of fifteen derivatives have been prepared through sonochemistry, which needed shorter reaction times for completion (8–30 min) and occurred in high yields (92–95%). The synthesized benzimidazole derivatives were identified by comparing their physicochemical and spectral characteristics with the respective published data for the authentic samples.