NEET 2026
- Exam
- NEET
- Year
- 2026
- Subject
- Chemistry
- Chapter
- Chapter
NEET 2026 · Chemistry · Chapter
The chemical structure of an organic compound is shown below. Which...
The chemical structure of an organic compound is shown below.
Which of the following statements correctly describes the behavior of this compound when treated with benzenesulphonyl chloride (Hinsberg's reagent)?
Options
- AIt forms a sulphonamide derivative which is soluble in aqueous alkali.
- BIt forms a sulphonamide derivative which is insoluble in aqueous alkali.
- CIt does not react with benzenesulphonyl chloride.
- DIt reacts to form a diazonium salt that is stable at room temperature.
Correct answer
B. It forms a sulphonamide derivative which is insoluble in aqueous alkali.
Step-by-step solution
The given organic compound is N-methylcyclohexanamine, which is a secondary amine.
When a secondary amine reacts with benzenesulphonyl chloride (Hinsberg's reagent), it forms an N,N-dialkylbenzenesulphonamide derivative.
Because there is no hydrogen atom attached to the nitrogen in this sulphonamide derivative, it is not acidic and therefore remains insoluble in aqueous alkali.
Thus, the compound forms a sulphonamide derivative which is insoluble in aqueous alkali.
Answer: It forms a sulphonamide derivative which is insoluble in aqueous alkali.
When a secondary amine reacts with benzenesulphonyl chloride (Hinsberg's reagent), it forms an N,N-dialkylbenzenesulphonamide derivative.
Because there is no hydrogen atom attached to the nitrogen in this sulphonamide derivative, it is not acidic and therefore remains insoluble in aqueous alkali.
Thus, the compound forms a sulphonamide derivative which is insoluble in aqueous alkali.
Answer: It forms a sulphonamide derivative which is insoluble in aqueous alkali.