Question

IUPAC name of benzylamine is

• A. phenylethanamine
• B. phenylmethanamine
• C. benzenamine
• D. N-methylbenzenamine

Hint:

Benzyl group corresponds to $\mathrm{C_6H_5-CH_2-}$, leading to phenylmethanamine as the IUPAC name.

Answer 1

The Correct Option is B

Step 1: Structure of benzylamine.
Benzylamine consists of a phenyl group attached to a methanamine group ($\mathrm{C_6H_5-CH_2-NH_2}$).

Step 2: Applying IUPAC nomenclature.
The parent chain is methanamine, and a phenyl group is attached to it, giving the name phenylmethanamine.

Step 3: Elimination of other options.
Phenylethanamine has two carbon atoms in the side chain, benzenamine refers to aniline, and N-methylbenzenamine is a different substituted amine.

Step 4: Conclusion.
Hence, the correct IUPAC name is (B) phenylmethanamine.