In the cumene to phenol preparation in presence of air. the intermediate is

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Answer

To solve the question regarding the preparation of phenol from cumene in the presence of air, we will break down the process step by step.

### Step-by-Step Solution:

1. **Identify Cumene**:
- Cumene is an organic compound with the structure C6H5C(CH3)2. It consists of a benzene ring (C6H5) attached to an isopropyl group (C(CH3)2).

2. **Oxidation of Cumene**:
- When cumene is exposed to air (oxygen), it undergoes oxidation. This reaction leads to the formation of cumene hydroperoxide.
- The reaction can be represented as:
\[ \text{Cumene} + \text{O}_2 \rightarrow \text{Cumene Hydroperoxide} \]

3. **Formation of Cumene Hydroperoxide**:
- The intermediate formed during this oxidation process is cumene hydroperoxide, which has the structure C6H5C(CH3)2OOH. This compound contains a hydroperoxide (-OOH) functional group.

4. **Hydrolysis of Cumene Hydroperoxide**:
- The next step involves the hydrolysis of cumene hydroperoxide. This reaction typically occurs in the presence of water and leads to the formation of phenol and acetone.
- The reaction can be represented as:
\[ \text{Cumene Hydroperoxide} \xrightarrow{\text{H}_2\text{O}} \text{Phenol} + \text{Acetone} \]

5. **Conclusion**:
- Therefore, the intermediate in the preparation of phenol from cumene in the presence of air is cumene hydroperoxide.

### Final Answer:
The intermediate is **Cumene Hydroperoxide**.

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