Question

Hoffmann bromamide degradation reaction is shown by which of the following?

• A. ArNH\(_2\)
• B. ArCONH\(_2\)
• C. ArNO\(_2\)
• D. ArCH\(_2\)NH\(_2\)

Hint:

Hoffmann bromamide degradation is a useful reaction for reducing carbon chain length by one unit while converting an amide into an amine.

Answer 1

The Correct Option is B

Step 1: Understanding Hoffmann Bromamide Degradation
Hoffmann bromamide degradation converts an amide (\( \text{CONH}_2 \)) into a primary amine (\( \text{NH}_2 \)), losing one carbon atom.
Step 2: Reaction Mechanism
In the presence of bromine (\( \text{Br}_2 \)) and sodium hydroxide (\( \text{NaOH} \)), this reaction yields an amine with one fewer carbon atom.
Step 3: Identifying the Correct Functional Group
The appropriate starting material for this reaction is an amide (\( \text{ArCONH}_2 \)), thus option (b) ArCONH\(_2\) is the correct selection.Final Answer: The Hoffmann bromamide degradation reaction is represented by ArCONH\(_2\).