Dehydrohalogenation
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Dehydrohalogenation is an organic chemistry reaction from which an alkene is obtained from an alkyl halide. It is also called the β-Elimination reaction. Ethanolic potassium hydroxide when reacted with alkyl halide gives alkene.
In this reaction, the halogen on the carbon in the alkyl halide reacts with hydrogen present on the β-carbon releasing hydrogen chloride. Hence an alkene is formed due to formation of a double bond between the α- and β-carbon.
[edit] Reactions
Here ethyl chloride reacts with potassium hydroxide dissolved in ethanol, giving ethene. Similarly 1 - chloropropane or 2 - chloropropane gives propene.
Chlorobenzene does not react with alcoholic potassium hydroxide.
[edit] References
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