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Alkenes: Reactions

Alkenes: Preparation

Most syntheses of alkenes are based on elimination reactions in which a substituted C-C single bond is transformed into a C=C double bond by eliminating an atom or group from each C atom.

Syntheses of alkenes
Dehydration of alcohols (elimination)
Dehydrohalogenation of alkyl halides (elimination)
Wittig reaction (addition/elimination)
Cracking (industrial production)
Partial hydrogenation

Movie: Dehydrogenation of alcohols

Elimination of water from cyclohexanol

Movie: Cracking

Catalytic cracking of paraffin oil
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