Reactivity 3.4 – Electron-pair sharing reactions

R3.4.12 – Addition of hydrogen halides to asymmetrical alkenes

  • Asymmetrical alkenes are ones in which more than one type of product can be formed
  • To determine which product is more stable (ie likely to be produced), the number of positive induvctive effects acting on the central carbon atom must be determined
  • The greater the inductive effect, the more stable the product is
  • Markovnikov’s rule states that the more electropositive part of the reacting species bonds to the least highly substituted carbon atom in the alkene
  • Using this rule, we can determine which product will be more likely to be produced, and therefore determine the reaction mechanism