Question

The correct option for the major products of the following reaction is 

• A. A
• B. B
• C. C
• D. D

Hint:

In SN2 reactions, the nucleophile attacks the electrophilic carbon, leading to the displacement of the leaving group. The position of isotopic labeling helps identify the location of the substitution.

Answer 1

The Correct Option is C

Step 1: Analyzing the reaction.
The reaction involves the halide (Cl) being substituted with the ethoxide ion (\(\text{EtO}^{-}\)) in the presence of a base, likely in an SN2 mechanism, where the ethoxide ion attacks the carbon bonded to the chloride. The reaction also involves isotopically labeled carbon, which will help trace the position of the substitution.
Step 2: Understanding the mechanism.
In an SN2 reaction, the nucleophile (ethoxide) directly attacks the electrophilic carbon (the carbon bonded to Cl), resulting in the substitution of Cl with the ethoxide group. The isotopically labeled carbon will also be incorporated into the product. This results in the major products being the alkoxide (OEt) and the ethoxy group (\(*EtO\)) attached to the carbon.
Step 3: Conclusion.
The major products are therefore \(\text{OEt}\) and \(\text{*EtO}\), corresponding to option (B).