In which of the following raections 1, 3 - butadiene will be obtained as a major product ?

B r - C H_{2} - C H_{2} - C H_{2} - C H_{2} - B r \frac{(C H_{3})_{3} C O K (2 m o l e)}{(C H_{3})_{3} C O H)}

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H O - C H_{2} - C H_{2} - C H_{2} - C H_{2} - O H c o n c H_{2} S O_{4} - ------ \to

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H_{2} C = C H - C = C H H_{2} [1 m o l e s] - ----- \to N i_{2} B

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All above these

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Solution

The correct option is D All above these
All reactions produce $1, 3 - d i b u t e n e$ as the product

$B r - C H_{2} - C H_{2} - C H_{2} - C H_{2} - B r (C H_{3})_{3} C O H ⟶ C H_{2} = C H - C H = C H_{2}$

$H O - C H_{2} - C H_{2} - C H_{2} - C H_{2} - O H H_{2} S O_{4} ⟶ C H_{2} = C H - C H = C H_{2}$

$H_{2} C = C H - C \equiv C H H_{2} / N i ⟶ C H_{2} = C H - C H = C H_{2}$

Reactions are dehydrohalogenation, dehydration and reduction respectively.

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