Recent Development in Visible-Light Assisted, Photocatalyst Free Carbon-Heteroatom Bond Formation: review

A gradual increase in the development of novel, mild, and highly proficient strategies for the synthesis of medicinally and synthetically important organic scaffolds remains a prominent goal in synthetic chemistry. Since the last decade, researchers and chemists have been paying attention to developing visible light-catalyzed organic transformations, this review focuses on green methodologies, particularly on the involvement of light for efficacious synthesis. Visible light has been utilized for asymmetric synthesis, multi-component reactions, aerobic oxidation, superoxide generation, synthesis of spiro moieties, stereoselective synthesis, etc. The advantages and boundaries of visible light in organic transformations have been well demonstrated, along with several representative examples.