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JEE Main levelSingle correct optionDifficulty 2 of 3o4098

Neopentyl alcohol, , is heated with conc. . The major alkene is

  1. A2-methylbut-2-ene
  2. B2-methylbut-1-ene
  3. Cpent-2-ene
  4. D3-methylbut-1-ene

Answer: A

Loss of water is accompanied by migration of a methyl group, giving the tertiary 2-methylbut-2-yl cation instead of an unstable primary cation. Loss of a proton in the Saytzeff sense gives 2-methylbut-2-ene.
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