Organic chemistry has played a vital role in the development of diverse molecules which are used in medicines, agrochemicals and polymers. These molecules are synthesized in industries who adopt a process of synthesis which is cost effective; no attention is paid towards release of harmful chemicals. But since last decades special emphasis has been made towards green synthesis which circumvents the above problem. It emphasis on the different tolls of green chemistry like phase transfer catalysis, biocatalysts, aqueous phase reactions, organic synthesis in solid state, microwave assisted synthesis, ultrasound assisted synthesis. It also provides a detailed literature review on green synthesis. The different tools of green chemistry used in synthesis of different molecules are discussed in detail.