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)
Show Answer
Answer:
Correct Answer: 1.(d)
Solution:
- (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.