ABSTRACT
Worldwide demand for environmentally friendly chemical processes and products requires the development of novel and cost-effective approaches to pollution prevention. Microwave technique is considered to be an important approach towards Green Chemistry because this technique is more environmentally friendly. Due to its ability to couple directly with the reactants molecule and to pass thermal conductivity to rapidly rise the temperature, microwave irradiation is used to improve organic synthesis. Microwave technology originated in 1946, when Dr. Percy Le Baron Spencer, while conducting laboratory tests for a new vacuum tube called a magnetron, accidentally discovered that a candy bar in his pocket had melted on exposure to microwave radiation. Solvent systems with higher boiling points are preferred in microwave-assisted organic synthetic reactions. A plethora of very recent synthetic applications describes a variety of new chemistries that can be performed with microwave irradiation but a wide range of microwave-assisted applications is waiting.
