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Question

The major product obtained on the elimination of bromine from 2-bromobutane in presence of alc. KOH is:

A
Predominantly 2-butyne
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B
Predominantly 1-butene
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C
Predominantly 2-butene
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D
equimolar mixture of 1 and 2-butene
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Solution

The correct option is C Predominantly 2-butene
The formation of 2-butene is in accordance to Saytzeff's rule on the elimination of bromine from 2-bromobutane. The more subtituted alkene is formed. Hence correct option is c.

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