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+2 votes
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in Haloalkanes and Haloarenes by (45.3k points)
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Which of the following undergoes nucleophilic substitution exclusively by SN1 mechanism ?

(a) Ethyl chloride 

(b) Isopropyl chloride

(c) Chlorobenzene 

(d) Benzyl chloride

1 Answer

+2 votes
by (67.8k points)
selected by
 
Best answer

Correct option (d) Benzyl chloride

Explanation :

SN1 reaction is favoured by heavy (bulky) groups on the carbon atom attached to halogens and nature of carbonium ion in substrate is

Benzyl > Allyl > Tertiary > Secondary > Primary > Methyl halides.

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