What is the stereochemical outcome of an SN2 reaction?

Practice Questions

Q1
What is the stereochemical outcome of an SN2 reaction?
  1. Retention of configuration
  2. Inversion of configuration
  3. Racemization
  4. No stereochemical change

Questions & Step-by-Step Solutions

What is the stereochemical outcome of an SN2 reaction?
  • Step 1: Understand that an SN2 reaction involves a nucleophile attacking a carbon atom that is bonded to a leaving group.
  • Step 2: Recognize that the nucleophile approaches the carbon from the opposite side of the leaving group.
  • Step 3: Note that as the nucleophile bonds to the carbon, the leaving group departs.
  • Step 4: Realize that this process causes the arrangement of atoms around the carbon to flip, which is called inversion of configuration.
  • Step 5: Conclude that the final product has a different 3D shape compared to the starting material due to this inversion.
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