Question

The structure of intermediate A in the following reaction, is;

• A.
• B.
• C.
• D.

Answer 1

The Correct Option is B

The given reaction involves the oxidation of isopropyl benzene (cumene) to phenol and acetone. This is a classic example of the cumene process, which is industrially significant for the production of these compounds. Let's analyze the steps involved:

1. In the first step, cumene (isopropyl benzene) reacts with oxygen (O₂) to form an intermediate known as Cumene hydroperoxide.
2. In the next step, Cumene hydroperoxide undergoes acid-catalyzed decomposition to yield phenol and acetone.

Therefore, the structure of the intermediate A is Cumene hydroperoxide. Let's see the reaction sequence:

This image represents the structure of Cumene hydroperoxide, which is the correct intermediate in the reaction.

Conclusion: The correct answer is the second option, which corresponds to the structure of Cumene hydroperoxide.