ORGANIC CHEMISTRY Chapter 21 o Quinones are an interesting and valuable class of compounds because of their oxidation-reduction,or redox, properties o The redox properties of quinones are important to the functioning of living cells, where compounds called ubiquinones(iz e)act as biochemical oxidizing agents to mediate the electro-transfer processes involved in energy production OH CHO CH +2e^.+2 H CH2O CH 2e.2H CHO H CH2O H CH OH CH3 Ubig Quinones(n=6 10 Ubiquinol(hydroquinone form) (coenzymes Q) Department of Chemistry, Xiamen UniversityORGANIC CHEMISTRY Department of Chemistry, Xiamen University Chapter 21 Quinones are an interesting and valuable class of compounds because of their oxidation-reduction, or redox, properties. The redox properties of quinones are important to the functioning of living cells, where compounds called ubiquinones(泛醌) act as biochemical oxidizing agents to mediate the electro-transfer processes involved in energy production. O O CH3O CH3O CH3 H CH3 n OH OH CH3O CH3O CH3 H CH3 n +2e- , +2H+ 2e- , 2H+ Ubiquinones (n=6 10) Ubiquinols (hydroquinone form) (coenzymes Q)