Question

Write IUPAC names of the following compound and classify it into primary, secondary, and tertiary amines.
${CH}_3{NHCH\left({CH}_3\right)}_2$

• A. N-Methylpropan-2-amine ($3^o$)
• B. 3-Methylpropan-2-amine ($3^o$)
• C. 2-Methylpropan-2-amine ($2^o$)
• D. N-Methylpropan-2-amine ($2^o$)

Answer 1

The correct option is D N-Methylpropan-2-amine ($2^o$)

The longest chain is propane, substituted at second carbon by amino group which is further attached to methyl group.

Therefore the name of the compound is N-methylpropan-2-amine.

As the substituted carbon is secondary, therefore amine is also classified as a secondary amine.