JEE Main Chemistry question

Elimination of bromine from 2-bromobutane results in the formation of

(A)Predominantly 2-butyne
(B)Predominantly 1-butene
(C)Predominantly 2-buteneCorrect
(D)Equimolar mixture of 1- and 2-butene

Answer: (C)

Solution

Dehydrohalogenation of 2-bromobutane with alcoholic KOH can remove a -hydrogen from either C-1 or C-3, giving 1-butene or 2-butene respectively. By Saytzeff's rule, the more

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Question ID VK-148057