Two extremily common reactions in Organic Chemistry are substitution
and elimination reactions. We are going to cover four basic reactions, E1, E2, SN1, and
SN2. These reactions all compete with each other so be sure to pay attention to which
conditions fovor each reaction.
The most common is called an SN2 reaction. It is a simple nucleophilic attack of a
nucleophile onto an electrophilic carbon. This attack causes and inversion of absolute
configuration of the carbon center.
SN2 Nucleophilic Substitution causes inversion of configuration: (best in polar aprotic
solvents, strong nucleophiles and good leaving groups.)