• In an elimination reaction, a small molecule is removed leaving behind an alkene
• This is another reaction of halogenoalkanes
• The halogenoalkanes are?heated?with?ethanolic sodium hydroxide?causing the C-X bond to break?heterolytically,?forming a X–?ion and leaving an alkene as organic product
  • E.g. bromoethane reacts with?ethanolic sodium hydroxide?when heated to form ethene

   

Hydrogen bromide is eliminated to form ethene

Elimination Mechanism of 2-bromopropane with hydroxide ions