Question

The major product formed in the following reaction, is

• A.
• B.
• C.
• D.

Answer 1

The Correct Option is A

To determine the major product of the reaction, we need to analyze the given reaction conditions and the structure of the reactant.

1. The reaction involves two steps:
   • LiBH_4/\text{EtOH}
   • H_3O^+
2. The reactant is a substituted cyclohexanone with a carboxylic acid and an ester group.

   

3. In the first step, LiBH_4 is a reducing agent that will selectively reduce the ester group to an alcohol while leaving the carboxylic acid group unaffected.
4. In the second step, with H_3O^+, any remaining acidic protons will be protonated, but the structure is already reduced in the first step.
5. The overall transformation focuses on reducing the ester to an alcohol.

Let’s analyze the options:

1. Option Image 1:

   

   This shows the ester reduced to an alcohol, matching our expected product.
2. Other Options: These either show incorrect functional group transformations or retain the ester group, which does not conform to the reduction with LiBH_4.

Conclusion: The major product is correctly represented by Option 1.