Which of the following halides undergoes nucleophilic substitution most readily?
A
p−H3CC6H4Cl
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B
O−MeOC6H4Cl
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C
p−ClC6H4Cl
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D
C6H5CH(Cl)CH3
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Solution
The correct option is DC6H5CH(Cl)CH3 C6H5CH(Cl)CH3 undergoes nucleophilic substitution most readily as Cl is attached to aliphatic C atom.
In p−H3CC6H4Cl,O−MeOC6H4Cl,p−ClC6H4Cl, Cl is attached to aromatic carbon atom. The nucleophilic substitution of aryl chlorides requires drastic conditions.