Question
Which of the following is allylic halide?
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Answer
Allylic halides are the halides in which the halogen atom is bonded to $sp^3−$ hybridized carbon atom next to carbon$-$carbon double bond $(C=C).$
General chemical structure of allylic halides:
$\ce{CH_{2}=CH−CH_{2}−X}$
Here, $X$ is any halogen atom.
So, according to the rule, only in $3-$chloro cyclohex$-1-$ene halide $(Cl)$ is attached with $sp^3$ carbon which is next to carbon$-$carbon double bond.
General chemical structure of allylic halides:
$\ce{CH_{2}=CH−CH_{2}−X}$
Here, $X$ is any halogen atom.
So, according to the rule, only in $3-$chloro cyclohex$-1-$ene halide $(Cl)$ is attached with $sp^3$ carbon which is next to carbon$-$carbon double bond.
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