Sections cover different aspects of green methods such as microwave irradiation and ultrasound sonication, some of which mostly contain solvent-free reaction conditions or water as solvent and ionic liquids, for synthesizing different compounds. Bringing together the knowledge of an expert team, this book provides a comprehensive overview of the use of green chemistry techniques, which have been frequently used in recent years, providing fewer chemicals, less energy, higher yield, etc. This book supplies a useful guide for all academic and industrial researchers across green and sustainable chemistry, medicinal chemistry, environmental chemistry, and pharmaceutical science.