The compound shown below undergoes the following reactions:

The compound shown below undergoes the following reactions:

Correct answer:4
Standard Method
Given: The substrate shown reacts with followed by .
Find: The major product and hence the numerical answer.
The solution concludes that the major product is option .
Using the conclusion from the solution:
Therefore, the correct numerical answer is .
What the solution states
The extracted the solution describes formation of a Grignard reagent on treatment with in dry ether and then states that the major product corresponds to option after reaction with water.
It ends with:
So the answer to be entered is .
Assuming this is a direct substitution by . That is not what the given reagent sequence indicates. First identify the role of , then use the product conclusion from the solution.
Ignoring the numbering instruction in a numerical-value question. Here the required response is the option number as a numeral, so the answer must be entered as , not as a structure description.
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