One of the reactions A, B, C, D given below yields a product which will not answer Hinsberg's test when reacted with Benzene sulphonyl chloride. Identify the reaction.

Step-by-step solution

Hinsberg test is used to distinguish between primary, secondary, and tertiary amines. Benzene sulphonyl chloride ( C₆H₅SO₂Cl ) reacts with primary and secondary amines to form sulfonamides. Primary amines form N-alkylbenzenesulfonamides which are soluble in alkali, while secondary amines form N,N-dialkylbenzenesulfonamides which are insoluble in alkali. Tertiary amines do not react with benzene sulphonyl chloride because they lack an acidic hydrogen atom on the nitrogen. Reaction [A]: Benzamide ( C₆H₅CONH₂ ) reacts