How many structural isomers of primary amines are possible for the molecular formula ? — Amines Chemistry Question

💡 Solution & Explanation

A primary amine has the formula $R-NH_2$. For $C_4H_{11}N$, the alkyl group must be a butyl group ($C_4H_9-$). There are 4 isomeric butyl groups: n-butyl, sec-butyl, isobutyl, and tert-butyl. Thus, exactly 4 primary amine structural isomers exist.