JEE Main Chemistry question

The dehydration of butan-1-ol gives **[WB-JEE 2007]**

(A)1-butene as the main product
(B)2-butene as the main productCorrect
(C)Equal amounts of 1-butene and 2-butene
(D)2-methyl propene

Answer: (B)

Solution

Dehydration of butan-1-ol proceeds through a primary carbocation, which rapidly rearranges (hydride shift) to the more stable secondary carbocation; loss of a proton from this secondary cation gives the more substituted alkene, 2-butene,

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Question ID VK-148449