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Question

The major product [B] in the following reactions is

A
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B
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C
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D
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Solution

The correct option is B
Ethers can be reactive under ​drastic reaction conditions (high temperature, high concentration) due to the cleavage of the C-O bond.​
In first step of the reaction, protonation of ether (O) group take place.
In second step, SN2 reaction take place, where I nucleophile will attack the less hindered site.

Reaction of (A) with dil.H2SO4 result in protonation of OH group followed by removal to water molecule to form primary carbocation which undergoes rearrangement to form stable tertiary carbocation followed by deprotonation to give a stable more substituted alkene product.

Hence, option (c) is correct.

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