Cyclohexanone oxime is converted into `epsilon`-caprolactam by treatement with

Options

A. dil HCl
B. `NaOC_(2)H_(5)`
C. Ammonia
D. conc. `H_(2)SO_(4)`

Answer

To convert cyclohexanone oxime into epsilon-caprolactam, we can follow these steps:

### Step-by-Step Solution:

1. **Formation of Cyclohexanone Oxime**:
- Start with cyclohexanone (C6H10O).
- React cyclohexanone with hydroxylamine (NH2OH) in the presence of an acid to form cyclohexanone oxime (C6H11NO).
- The reaction can be represented as:
\[ \text{Cyclohexanone} + \text{Hydroxylamine} \rightarrow \text{Cyclohexanone Oxime} \]

2. **Backman Rearrangement**:
- Cyclohexanone oxime undergoes a rearrangement known as the Beckmann rearrangement.
- This reaction is typically acid-catalyzed, and in this case, we will use concentrated sulfuric acid (H2SO4) as the catalyst.
- The reaction can be represented as:
\[ \text{Cyclohexanone Oxime} \xrightarrow{\text{H}_2\text{SO}_4} \text{Epsilon-Caprolactam} \]

3. **Formation of Epsilon-Caprolactam**:
- The Beckmann rearrangement converts the oxime into an amide, specifically epsilon-caprolactam (C6H11NO).
- The final product is epsilon-caprolactam, which is a cyclic amide.

### Final Reaction:
\[ \text{Cyclohexanone Oxime} \xrightarrow{\text{Concentrated H}_2\text{SO}_4} \text{Epsilon-Caprolactam} \]

### Conclusion:
Thus, cyclohexanone oxime is converted into epsilon-caprolactam by treatment with **concentrated sulfuric acid**.