Question:
What is Hinsberg’s reagent?
What is Hinsberg’s reagent?
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Hinsberg’s reagent is used to differentiate between primary, secondary, and tertiary amines based on their reactions with the sulfonyl chloride group.
Updated On: Jan 13, 2026
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Solution and Explanation
Hinsberg’s reagent is benzenesulfonyl chloride (C$_6$H$_5$SO$_2$Cl), which is used to differentiate between primary, secondary, and tertiary amines. The reagent reacts with primary amines to form sulfonamides, with secondary amines to form N-alkyl sulfonamides, and with tertiary amines, no reaction occurs due to the lack of an available hydrogen atom for reaction. This test helps distinguish between the different classes of amines.
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