Which of the following amine will not undergo acylation reaction?
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → N,N-Diethyl aniline
Acylation occurs only in primary and secondary amines because they have N–H bond.
Tertiary amines do not undergo acylation.
Detailed Explanation
Option 1: Methylamine
Primary amine.
Contains N-H bond.
Undergoes acylation to form amide.
Option 2: Ethylamine
Primary amine.
Has N-H bond.
Undergoes acylation.
Option 3: N,N-Diethyl aniline
This is a tertiary amine.
No N-H bond present.
Hence cannot undergo acylation.
Option 4: N-Methylmethanamine
Secondary amine.
Contains N-H bond.
Undergoes acylation.
