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JEE Main · 2022 · 25 Jun 2022 · Shift 1 · Haloalkanes and Haloarenes

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The major product in the reaction
  1. (A)t-Butyl ethyl ether
  2. (B)2,2-Dimethyl butane
  3. (C)2-Methyl pent-1-ene
  4. (D)2-Methyl prop-1-ene✓ Correct

Answer: (D)

Solution

The reaction involves a bulky base (potassium tert-butoxide), which favors elimination (E2) over substitution. With a bulky base, the less substituted alkene (Hofmann product) is formed preferentially. The substrate undergoes β-elimination to give 2-methylprop-1-ene as the major product. The correct answer is (D).

JEE Main · 2022 · 25 Jun 2022 · Shift 1 · Single correct option

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