Question

Explain E₂ reaction mechanism with a suitable example.

Answer 1

• E₂ reaction stands bimolecular elimination reaction of second order. The rate of E₂ reaction depends on the concentration of alkyl halide and the base. 
• Primary alkyl halide undergoes this reaction in the presence of alcoholic KOH. 
• It is a one step process in which the abstraction of the proton from the 3 carbon atom and expulsion of halide from the x carbon atom occur simultaneously. 
• The mechanism that follows is shown below: