Recent advances in catalyst-free photochemical reactions via electron donor-acceptor (EDA) complex process

This review summarizes the recent progress the emerging area of photochemical reaction initiated by Electron-donor-acceptor (EDA) complex in synthetic organic chemistry. Recent developments in the photochemical carbon-carbon and carbon-heteroatom bond formation using expensive transition-metal catalysts, toxic reagents, photoinduced bond dissociation are well known. Although the physicochemical properties of EDA complexes have been enormously studied in applied and materials chemistry but their use in synthetic chemistry remains unexplored. Great importance has given to develop an environmentally benign technology in order to improve the processes of radical generation. The radical reaction via EDA complexes process attracted much attention and achieved many advances in organic synthetic filed owing to avoiding the use of expensive transition-metal catalysts, toxic reagents, as well as explosive oxidants. We believe that this review will update researchers focused on searching new photochemical reaction via EDA mechanism and will encourage further growth in this field. (C) 2019 Published by Elsevier Ltd.