- "DDQ" redirects here. DDQ is also the former callsign of a TV station in Toowoomba, Queensland, Australia. RTQ is an Australian Television station broadcasting in regional Queensland in Australia.
Benzoquinone, or quinone is one of the two isomers of cyclohexadienedione. It has the molecular formula C6H4O2. Orthobenzoquinone is the 1,2-dione, whereas parabenzoquinone is the 1,4-dione.
Orthobenzoquinone is the oxidized form of catechol (1,2-dihydroxybenzene), while parabenzoquinone is the oxidized form of hydroquinone. Pyrocatechol, more commonly known as catechol, is the Organic compound with the formula C6H4(OH2 Organic reductions or organic oxidations or organic redox reactions are Redox reactions that take place with Organic compounds In Organic Hydroquinone, also benzene-14-diol or quinol, is an Aromatic Organic compound which is a type of phenol, having the Chemical An acidic potassium iodide solution reduces a solution of benzoquinone to hydroquinone, which is oxidized back with a solution of silver nitrate. Potassium iodide is an Inorganic compound with formula K[[iodide I]] Silver nitrate also known as lunar caustic is a soluble Chemical compound with Chemical formula Ag[[Nitrogen N]] O 3
Quinone is also the name for the class of compounds containing either benzoquinone isomers as part of their structure. Quinones are not aromatic, but are dienes. The carbonyl groups are ketone-like. A ketone (pronounced as key tone) is either the Functional group characterized by a Carbonyl group (O=C linked to two other Carbon atoms or
 1,2-Benzoquinone |
 1,4-Benzoquinone |
Biochemistry
Quinone is a common constituent of biologically relevant molecules (e. g. Vitamin K1 is phylloquinone). Vitamin K (K from "Koagulations-Vitamin" in German Danish Swedish and Norwegian denotes a group of Lipophilic, Hydrophobic Vitamins that Others serve as electron acceptors in electron transport chains such as those in Photosystems I & II of photosynthesis, and aerobic respiration. Photosystems (ancient Greek: phos = light and systema = assembly are Protein complexes involved in Photosynthesis. Photosynthesis is a Metabolic pathway that converts Light Energy into Chemical energy. Cellular respiration is the set of the metabolic reactions and processes that take place in Organisms cells to convert biochemical energy from A natural example of quinones as oxidizing agents is the spray of bombardier beetles. An oxidizing agent or oxidising agent (also called an oxidant, oxidizer or oxidiser) can be defined as either a Chemical compound Bombardier Beetles are Ground beetles ( Carabidae) in the tribes Brachinini, Paussini, Ozaenini, or Metriini —more Hydroquinone is reacted with hydrogen peroxide to produce a fiery blast of steam, a strong deterrent in the animal world. Hydrogen peroxide (H2O2 is a very pale blue liquid which appears colorless in a dilute solution slightly more Viscous than water Quinones can be partially reduced to quinols.
Oxidizing agents
Benzoquinone is used in organic chemistry as an oxidizing agent. Organic chemistry is a discipline within Chemistry which involves the scientific study of the structure properties composition reactions, and preparation Organic reductions or organic oxidations or organic redox reactions are Redox reactions that take place with Organic compounds In Organic Stronger quinone oxidising agents exist; for instance: 2,3,5,6-tetrachloro-parabenzoquinone (also known as p-chloranil) and 2,3-dicyano-5,6-dichloro-parabenzoquinone (also known as DDQ). [1]
References
- ^ March, Jerry (1985). Advanced Organic Chemistry, Reactions, Mechanisms and Structure, third Edition, John Wiley & Sons. ISBN 0-471-85472-7.
Dictionary
quinone
-noun
- (organic chemistry) any of a class of aromatic compounds having two carbonyl functional groups in the same six-membered ring
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