Question

The major product formed in the following reaction is 

• A. (A)
• B. (B)
• C. (C)
• D. (D)

Hint:

For elimination reactions (E2 mechanism), the base removes a hydrogen atom from the carbon adjacent to the one bearing the leaving group.

Answer 1

The Correct Option is A

Step 1: Understanding the reaction mechanism.
This is an example of an elimination reaction where the sodium methoxide (NaOMe) acts as a strong base to dehydrohalogenate the molecule. The base removes a hydrogen atom adjacent to the leaving group (Br), leading to the formation of an alkene. The reaction proceeds via an \(E2\) mechanism, where the leaving group is expelled in a single step with the formation of a double bond.

Step 2: Analyzing the options.
(A), (B), (D): These are incorrect as they do not match the expected product formation from this elimination reaction.
(C) Correct: The structure in option (C) shows the expected major product with the correct double bond placement after elimination.

Step 3: Conclusion.
The correct answer is (C).