Describe E reaction mechanism with a suitable example.

Question

Describe E₁ reaction mechanism with a suitable example.

Answer 1

1. E₁ stands for unimolecular elimination reaction of first order. 

2. Tertiary alkyl halides undergoes elimination reaction in the presence of alcoholic KOH

3. It takes place in two steps. 

4. Step 1. 

Heterolytic fission to yield a carbocation:

5. Step 2. 

Elimination of a proton from the fl-carbon to produce an alkene: