Unsaturated hydrocarbons that contain one or more double carbon-carbon bonds in their molecules. In systematic chemical nomenclature alkene names end in the suffix -ene. Alkenes that have only one double bond form a homologous series (the alkene series) starting ethene (ethylene), CH2=CH2, propene, CH3CH=CH2, etc. The general formula is CnH2n. Higher members of the series show isomerism depending on position of the double bond; for example, butene (C4H8) has two isomers, which are (1) but-1-ene (C2H5CH=CH2) and (2) but-2-ene (CH3CH=CHCH3): see formulae. Alkenes can be made by dehydration of alcohols (passing the vapour over hot pumice):
An alternative method is the removal of a hydrogen atom and halogen atom from a haloalkane by potassium hydroxide in hot alcoholic solution:
Alkenes typically undergo addition reactions to the double bond. They can be tested for by the Baeyer test. See also hydrogenation; oxo process; ozonolysis; Ziegler process.
Alkenes
https://www.acdlabs.com/iupac/nomenclature/79/r79_53.htm Information about IUPAC nomenclature
- inferred reserve
- inferred tree
- infiltration
- infiltration capacity
- infima species
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- infinitary language
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- infinite divisibility
- infinite impulse response filter
- infinite product
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- infinite resolution
- infinite sequence
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- infinite set
- infinitesimal
- infinitesimal strain
- infinity
- infinity, axiom of
- infirmation
- infix notation
- inflammable
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