Alkyl Halides - Result Question 13

13. The major product of the following reaction is

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Answer:

Correct Answer: 13. (b)

Solution:

  1. Complete reaction can be represented as

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Thus, the given reaction is dehydrohalogenation which is a $\beta$ -elimination proceeding through $E _2$ mechanism.

Mechanism The reaction proceeds through the formation of following transition state with simultaneous removal of $Br$ and $H$ atoms.

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