Question

Classify the reaction type as elimination, rearrangement, addition and substitution.
  1.  
  1.  
  1. $\text{CH}_3-\text{CH(Br)}-\text{CH}(\text{CH}_3)_2\xrightarrow{\text{aq. KOH}}$
$\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{OH}\\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ |\\\text{CH}_3-\text{CH}_2-\text{C}-\text{CH}_3\\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ |\\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{CH}_3$

Answer

  1. Elimination (Dehydration).
  2. Rearrangement addition (More alkyl substituted alkenes are more stable).
  3. Rearrangement substitution (3° carbocation is more stable).

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