Haloalkanes And Haloarenes Ques 1

1. Elimination reaction of $2$-Bromo-pentane to form pent-$2$-ene is:

[2020]

(A) $\beta$-Elimination reaction

(B) Follows Zaitsev rule

(C) Dehydrohalogenation reaction

(D) Dehydration reaction

(a) (A), (C), (D)

(b) (B), (C), (D)

(c) (A), (B), (D)

(d) (A), (B), (C)

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Answer:

Correct Answer: 1.(d)

Solution:

  1. (d)

Mechanism :

It is an $\beta$ elimination reaction as $\beta$ hydrogen is abstracted and results more substituted alkene, which follows Zaitsev’s rule.

Since ’ $H$ ’ and ’ $Br$ ’ are removed, it is dehydrohalogenation.