Alkene reactions
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Alkene Reactions. Addition Reactions - only one product 1. Hydrogenation (H 2 ): Alkene + Hydrogen --> Alkane 2. Halogenation (X 2 ): Alkene + diatomic halogen --> Dihaloalkane 3. Halgenation (HX): Alkene + HX --> Haloalkane 4. Hydration (HOH): Alkene + HOH --> alcohol

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Alkene Reactions

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Alkene reactions

Alkene Reactions

  • Addition Reactions - only one product

  • 1. Hydrogenation (H2): Alkene + Hydrogen --> Alkane

  • 2. Halogenation (X2):Alkene + diatomic halogen --> Dihaloalkane

  • 3. Halgenation (HX):Alkene + HX --> Haloalkane

  • 4. Hydration (HOH):Alkene + HOH --> alcohol

  • 5. Polymerization:Many alkenes add together into a long alkane chain


Alkene reactions1

Alkene Reactions


1 hydrogenation reaction

1. Hydrogenation Reaction

  • Alkene + Hydrogen --> Alkane

  • Hydrogen molecule adds to carbons with double bond.


Alkene reactions2

Alkene Reactions


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Alkene Reactions


2 halogenation reaction

2. Halogenation Reaction

  • Alkene + Halogen --> Dihaloalkane

  • Halogen molecule adds to carbons with double bond.


Alkene reactions4

Alkene Reactions


Unsymmetrical addition reactions

Unsymmetrical Addition Reactions

  • Markovnikov’s Rule

  • For double bonds that have unequal numbers of hydrogen atoms attached.

  • For unsymmetrical reactants such as HX and HOH

  • The hydrogen of the reactant goes to the carbon of the double bond that already has the most hydrogen atoms. “the rich get richer”

  • The -X or the -OH go the other carbon (the one with the least amount of hydrogen


3 halogenation reaction

3. Halogenation Reaction

  • Alkene + HX --> haloalkane

  • HCl molecule adds to carbons with double bond.


Alkene reactions5

Alkene Reactions


4 hydration reaction

4. Hydration Reaction

  • Alkene + HOH --> alcohol

  • HOH molecule adds to carbons with double bond.


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Alkene Reactions


5 polymerization reaction

5. Polymerization Reaction

  • Alkene + Alkene + Alkene --> long chain of carbons

  • Double bonds convert to single bonds


Alkene reactions7

What is the structure for

Alkene Reactions


Alkene reactions8

Alkene Reactions


Alkene reactions9

Alkene Reactions


Alkene reactions10

Alkene Reactions


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