Dehydrogenation
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[[dehydrogenase]]s.
'''Dehydrogenation''' is a chemical reaction that involves the elimination of [[hydrogen]] (H<sub>2</sub>). It is the reverse process of [[hydrogenation]]. Dehydrogenation reactions may be either large scale industrial processes or smaller scale laboratory procedures.
There are a variety of classes of dehydrogenations:
*Aromatization - Six-membered [[alicyclic compound|alicyclic]] rings can be aromatized in the presence of hydrogenation catalysts, the elements [[sulfur]] and [[selenium]], or [[quinone]]s (such as [[DDQ]]).
*Oxidation - The conversion of [[alcohol]]s to [[ketone]]s or [[aldehyde]]s can be effected by metal catalysts such as [[copper chromite]]. In the [[Oppenauer oxidation]], hydrogen is transferred from one alcohol to another to bring about the oxidation.
*Dehydrogenation of amines - [[amine]]s can be converted to [[nitrile]]s using a variety of [[reagent]]s, such as IF<sub>5</sub>.
*Dehydrogenation of [[paraffin]]s and [[olefin]]s - paraffins like n-[[pentane]] and [[isopentane]] can be converted to [[pentene]] and [[isoprene]].
Dehydrogenation converts saturated fats to unsaturated fats.
Enzymes that catalyze dehydrogenation are called [[dehydrogenase]]s.
==References==
*''Advanced Organic Chemistry'', Jerry March, 1162-1173.
[[Category:Elimination reactions]]
[[Category:Hydrogen]]
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[[et:Dehüdrogeenimine]]
[[es:Deshidrogenación]]
[[fr:Déshydrogénation]]
[[he:דהידרוגנציה]]
[[no:Dehydrogenering]]
[[pl:Odwodornienie]]
[[pt:Dehidrogenação]]
[[ru:Дегидрогенизация]]
[[uk:Дегідрогенізація]]
[[zh:脱氢]]