Organic Chemistry

Overview of addition, elimination, substitution and rearrangement reactions

108.4 Substitution reactions

This involves the exchange of one group for another.

AB + CD → AC + BD

Common reaction types include

• radical reactions and


• nucleophilic substitutions
  
  
  • SN1, Unimolecular nucleophilic substitution
  
  
  • SN2, Bimolecular nucleophilic substitution
  
  
  
  

108.5 Rearrangement reactions

A molecule shifts or otherwise rearranges to form a different molecule.

A → B

This typically happens when one molecule changes into an isomer of itself.