SYNTHESIS OF ORGANIC AND HETEROCYCLIC CHEMISTRY COMPOUNDS USING GREEN CONDITIONS

Green sustainable chemistry (GSC) is, in a word, chemistry and chemical technology for environmentally friendly products and processes. Green chemistry uses highly efficient and environmental benign synthetic procedures to deliver life-saving medicines, accelerating guide optimization processes in drug discovery, and bioactive compounds with reduced needless environmental impact. Catalysis remains one of the most important fields of green chemistry by providing atom-economical, selective, and energy-efficient solutions to many industrially important problems. The heteropolyacid (HPA) catalysts will be introduced as promising candidates for green and nano catalysts in the following order: An overview, latest experimental result, and then examples of industrial application. Furthermore, since they can be active solid acid catalysts and can provide unique reaction fields such as pseudoliquid, that is, “catalytically active solid solvent,” HPA catalysts will find more green/sustainable applications in future. HPAs as solid acid catalysts are green catalysts with respect to their noncorrosive nature, safety, low quantity of waste, and easy separation. One of the unique features that make solid HPAs economically and environmentally attractive is their stability and high acidity. Also, other green and nano catalysts using in the synthesis of organic, heterocyclic and pharmaceutical compounds. In this review, we have attempted to present some of new applications of heteropolyacids, other useful catalysts, nano-catalysts in the synthesis of heterocyclic, organic compounds.