Question

Identify the compound that will react with Hinsberg's reagent to give a solid which dissolves in alkali.

• A.
  
  
• B.
  
  
• C.
  
• D.
  
  

Answer 1

The correct option is D

• Benzenesulphonyl chloride $\left(C_6{H}_{5}S{O}_{2}Cl\right)$ is also known as Hinsberg's reagent.
• The reaction of Hinsberg's reagent $\left(C_6{H}_{5}S{O}_{2}Cl\right)$ with primary amine $\left(C{H}_{3}C{H}_{2}N{H}_2\right)$ yields N-ethylbenzene sulphonamide.

• The reaction of Hinsberg's reagent $\left(C_6{H}_{5}S{O}_{2}Cl\right)$ with secondary amine $\left(C_2{H}_{5}NHC{H}_3\right)$ gives, N-Ethyl-N-Methyl benzene sulphonamide

• $3^{\circ }$ amine do not react with Hinsberg reagent