Green Synthesis of Bioactive Organic Compounds: Recent Advances and Future Prospects

Abstract

Green synthesis has emerged as an important approach in modern organic chemistry, especially for the preparation of bioactive organic compounds with pharmaceutical, agricultural, and industrial applications. Conventional synthetic methods often involve toxic solvents, hazardous reagents, high energy consumption, and waste generation, posing risks to both human health and the environment. To overcome these challenges, green chemistry promotes sustainable strategies based on safer solvents, renewable resources, catalytic processes, atom economy, and energy-efficient techniques. This paper examines the principles, methods, and recent advances in the green synthesis of bioactive organic compounds. It focuses on important classes such as heterocyclic compounds, flavonoids, alkaloids, coumarins, quinolines, and pyrazoles, which exhibit significant biological activities including antimicrobial, antioxidant, anti-inflammatory, anticancer, and antiviral properties. The study highlights modern green techniques such as microwave-assisted synthesis, ultrasound-assisted reactions, solvent-free methods, biocatalysis, deep eutectic solvents, and multicomponent reactions. Furthermore, the paper discusses the role of green synthesis in drug discovery and sustainable industrial processes. Although significant progress has been achieved, challenges such as scalability, catalyst recovery, and economic feasibility remain. Overall, green synthesis offers an efficient and environmentally responsible pathway for the future development of bioactive organic molecules.