The power of ultrasonic waves plays the most important role in the size and morphology of the products. Montmorillonite K-10 found to be highly efficient, environmentally friendly and recyclable heterogeneous catalysts and also found to play the role in the size and morphology of the products. In order to find the combined effect of both ultrasonic waves and montmorillonite K-10 clay, aspirin, m-dinitrobenzene and glucosazone were synthesised under ultrasound irradiation (sonication method) using montmorillonite K-10 clay. This new methodology provides excellent yields in short reaction times (5–20 min). The reaction work-up is very simple and the catalysts can be easily separated from the reaction mixture and reused several times in subsequent reactions. The compounds synthesized confirmed by FT-IR. The size and morphology of products characterized by XRD and SEM compared with products obtained by (i) conventional method (ii) conventional method with clay. Similarly the percentage yield obtained and the time factor also compared between the three methods.

Keywords: Sonication; Montmorillonite; Aspirin; M-Dinitrobenzene; Glucosazone;