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Alkenes: Reactions

Alkenes: Chemical Properties

To some extent, alkenes are less stable and therefore more reactive than alkanes because of the double bond. The combination of σ and π bonds creates a higher electron density around the double bond favoring addition reactions.

Tab.1
Examples of addition reactions to C=C double bonds
Addition of halogens
Hydration
Hydrogenation
Epoxidation

Polymerization is another addition reaction of alkenes. This important technical reaction occurs by a catalyzed radical mechanism and provides access to important industrial products such as polyethylene from ethene and polypropylene from propylene.

Fig.1
Polymerization of ethylene
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