Contrasting with primary amines, what exact chemical observation is observed when a pure secondary ( — Amines Chemistry Question

💡 Solution & Explanation

A $2^\circ$ amine reacts successfully with Hinsberg's reagent, generating an N,N-dialkylbenzenesulphonamide. However, because the nitrogen atom is fully alkylated, it totally lacks any remaining acidic $N-H$ protons. Consequently, it cannot react with the strong $KOH$ base and rigorously remains as a water-insoluble solid.