Chemistry [[Module Three]] Haloalkanes: Elimination

- Hydroxide ion can also act as a base

- which allows elimination to take place

- Hydrogen and Bromide elimated from haloalkane

- Forms an alkene




Mechanism:


[[Importance of Substitution and Elimination]]

1) Structure of Haloalkane
- primary haloalkanes give predominantly substitution reactions
- tertiary alkanes favour eliminatation
- secondary do both

2) Base Strength of the nucleophile
- liklihood increases as base strength on nucleophile increases

3) Reaction Conditions
- higher temps = greater chance of elmination
- Elimination = hot, ethanolic conditions
- Substitution = warm, aqueous conditions.