Question

What is the major product formed when diazonium salt undergoes Gatterman reaction?

• A. Haloarene
• B. Aryl amine
• C. Phenol
• D. Diphenyl ether

Answer 1

The Correct Option is A

The Gattermann reaction involves the treatment of a diazonium salt with a halogen acid (e.g., HCl or HBr) and copper powder. The reaction proceeds in these stages:

1. Diazonium Salt Generation: Aryl amines are transformed into diazonium salts by reaction with nitrous acid under low-temperature conditions.
2. Halogen Substitution: The diazonium group (N₂⁺) is substituted by a halogen atom (e.g., Cl or Br) when copper powder and a halogen acid are present.
3. Haloarene Synthesis: The primary product obtained is an aryl halide, also known as a haloarene.

Consequently, a haloarene is the principal product of the Gattermann reaction when a diazonium salt is the starting material.