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Stoichiometry

Which compoun...

Question

Which compound gives 2- butene on dehydrohalogenation ?

C H_{3} - C H_{2} - C | H B r - C | H_{2} B r

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C H_{3} - C | H B r - C H_{2} - C | B r H_{2}

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C H_{3} - C H_{2} - C | B r H - C H_{3}

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B r C H_{2} - C H_{2} - C H_{2} - C H_{2} B r

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Solution

The correct option is D $C H_{3} - C H_{2} - C | B r H - C H_{3}$
Dehydrohalogenation is an organic reaction in which the alkyl halide halide on reaction with alcoholic KOH ,gives the corresponding alkene. Thus 2-butene can be obtained as:
$C H_{3} - C H_{2} - C H (B r) - C H_{3} + K O H \to C H_{3} - C H = C H - C H_{3} + K C l + H_{2} O$

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S_{N} 2

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C H_{3} - C H | F - \oplus C H_{2}

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