Chapter 22, Problem 22.49P

Interpretation Introduction

Interpretation:

The complete, detailed mechanism for the deiodination reaction is to be drawn.

Concept introduction:

The electrophilic addition reaction is when halogen react with aromatic compound in presence of catalyst ${\text{AlCl}}_{\text{3}}$. The ${\text{AlCl}}_{\text{3}}$ is strong Lewis catalyst which undergoes coordination reaction with a halogen. In a dehalogenation reaction, halogen is a leaving group and hydrogen is an electrophile. Hence a Lewis catalyst such as ${\text{AlCl}}_{\text{3}}$ is important for electrophilic addition-elimination reaction.