Predict all the possible products for the reaction of 2-chlorobutane with alcoholic $K O H$ .

1-Butene

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Cis-2-butene

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Trans-2-butene

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2-Butyne

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Solution

The correct option is C Trans-2-butene
The reaction proceeds through E₂ elimination mechanism.
According to Saytzeff rule, the more substituted alkenes will be the major product and hence 1-butene will be formed in lesser amount than cis-2-butene and trans-2-butene.

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Predict all the possible products for the reaction of 2-chlorobutane with alcoholic $K O H$ .

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