Question

Which of the following reactions does NOT involve replacement of diazonium group?

• A. Reaction with potassium iodide
• B. Reaction with aniline
• C. Reaction with cuprous chloride in HCl
• D. Reaction with hypophosphorus acid

Hint:

For reactions involving diazonium salts, look for those where the diazonium group is replaced by a nucleophile such as halides or other functional groups.

Answer 1

The Correct Option is B

Step 1: Understanding diazonium reactions.
Diazonium salts are reactive intermediates in organic chemistry that can undergo various reactions, such as substitution with halides, coupling reactions, and reduction.
Step 2: Analyzing the options.
(A) Reaction with potassium iodide: Involves replacement of the diazonium group by iodide.
(B) Reaction with aniline: This reaction does not involve the replacement of the diazonium group, it involves a coupling reaction where the aniline reacts with the diazonium ion.
(C) Reaction with cuprous chloride in HCl: Involves the replacement of the diazonium group by chloride.
(D) Reaction with hypophosphorus acid: This reaction replaces the diazonium group with hydrogen.
Step 3: Conclusion.
The correct answer is (B) Reaction with aniline.