Question

Which of the following is soluble in sodium hydroxide ?

• A.
• B.
• C.
• D.

Answer 1

Answer: (A)

With benzene sulphonyl chloride (Hinsberg reagent) $C_6{H}_{5}S{O}_{2}Cl,1^{\circ }$ amine forms $N$-alkyl benzene sulphonamide, soluble in alkali.