C▬H Activation Strategies for Heterofunctionalization and Heterocyclization on Quinones: Application in the Synthesis of Bioactive Compounds

Quinone moieties in general and heterofunctionalized or heterofused quinones in particular find application in several fields such as medicinal chemistry, natural products, and functional materials. Due to its striking applications, scientists developed useful methods for the synthesis of quinone derivatives. C ▬ H activation strategy is a fast-developing and straightforward concept, used in the construction of a diverse variety of bonds such as carbon ▬ carbon (C ▬ C) and carbon ▬ hetero (C ▬ O/N/ S/P) bonds and also used is the heterofunctionalization/heterocyclization of quinones. Such approaches are useful in making use of unfunctionalized quinones for the synthesis of heterofunctionalized or heterocycle-fused quinones. The redox active nature and ligand-like properties make it difficult to carryout C ▬ H activation on quinones. In this chapter we summarized recent developments on strategies used for C ▬ hetero atom bond formation on quinones via C ▬ H activation, leading to heterofunctionalization and synthesis of heterofused quinones.