Question:medium

An amine ‘X’ reacts with Hinsberg reagent and the product obtained is insoluble in alkali. The amine ‘X’ is:

Show Hint

Hinsberg test: Primary amine → soluble sulfonamide; secondary → insoluble; tertiary → no reaction.
Updated On: Feb 24, 2026
  • (CH$_3$)$_2$–NH
  • (CH$_3$)$_3$N
  • CH$_3$–CH$_2$–NH$_2$
  • \chemfig{*6(=-=-=-)-NH_2} (Aniline)
Show Solution

The Correct Option is A

Solution and Explanation

The reaction of a secondary amine with Hinsberg reagent yields a sulfonamide insoluble in alkali, thus verifying that ‘X’ is a secondary amine.
Was this answer helpful?
0