Question

Which of the following is used as Hinsberg?? reagent?

• A. $C_6H_5SO_2Cl$
• B. $C_6H_5SO_3H$
• C. $C_6H_5NHCH_3$
• D. $C_6H_5COCH_3$

Answer 1

Answer: (A)

$C_6H_5SO_2Cl$

Answer 2

Hinsberg's reagent is used to differentiate the amines into $1^{0}$ or $2^{0}$ or $3^{0}$. The chemical formula for Hinsberg reagent is $C _{6} H _{5} SO _{2} Cl$ i.e Benzene sulphonyl chloride. Primary amines get converted to sulphonamide in presence of Hinsberg reagent which is soluble in $NaOH$ secondary amines get converted to sulphonamide in presence of Hinsberg reagent which is insoluble in $NaOH$ There is no reaction of Hinsberg reagent with tertiary amines.