Abstract
As the need for friendly environment increasing the need for Sonochemistry increasing. Sonochemistry has become an important field of research for organic synthesis of diverse types of reactions, that decrease environmental hazardous and increase the yield of those reactions. The aim is to continue reviewing applications of ultrasound in chemical synthesis and reactions as reported in part I [1] and part II [2]. In this article I am trying to illustrate green sonochemical approaches for organic synthesis as one of the applications of ultrasound that minimize or eliminate the use and generation of hazardous substances and reduce environmental pollution.