Question

The IUPAC name for CH3 - CH2 - N(CH3) - CH2 - CH2 - CH3 is :

• A. N-methylpentan-2-amine
• B. N-ethyl-N-methylpropan-1-amine
• C. N,N-diethylpropan-1-amine
• D. N,N-dimethylpropan-1-amine

Hint:

When naming amines, identify the longest carbon chain and number it to give the amine group the lowest possible number.

Answer 1

The Correct Option is B

The IUPAC name is based on the longest chain containing the amine group and the substituents. Here, the longest chain is 3 carbons (propan), with two substituents on the nitrogen (ethyl and methyl). Thus, the correct name is N-ethyl-N-methylpropan-1-amine.