Question

Write the following reactions with chemical equation:
Sandmeyer's reaction
Fittig reaction

Hint:

In Sandmeyer's reaction, the diazonium ion is replaced by a halide ion, while the Fittig reaction involves the formation of biaryl compounds using sodium metal.

Answer 1

(i) Sandmeyer's Reaction.
Sandmeyer's reaction is used to replace a diazonium group (\(\text{ArN}_2^+\)) with a halogen (Cl or Br) using copper(I) chloride or copper(I) bromide. The chemical equation for Sandmeyer's reaction is: \[ \text{ArN}_2^+ + \text{CuCl} \rightarrow \text{ArCl} + \text{Cu}_2\text{Cl}_2 \] (ii) Fittig Reaction.
The Fittig reaction is a coupling reaction where an aryl halide reacts with an alkyl halide in the presence of sodium metal to form a biaryl. The chemical equation for the Fittig reaction is: \[ \text{C}_6\text{H}_5\text{Cl} + \text{C}_6\text{H}_5\text{CH}_3 \xrightarrow{\text{Na}} \text{C}_6\text{H}_5\text{-C}_6\text{H}_4\text{-CH}_3 \]