Reaction of C6H5CH2Br with aqueous sodium hydroxide follows (i) SN1 mechanism (ii) SN2 mechanism (iii) Any of the above two depending upon the temperature of reaction (iv) Saytzeff rule

This is a multiple choice answer as classified in NCERT Exemplar The Correct Answer is Option (i). When benzyl chloride is treated with aqueous sodium hydroxide, where -OH is the nucleophile, a nucleophilic substitution reaction occurs, resulting in the formation of benzyl alcohol. The benzene ring is resonance stabilised here, and this stability is extended to the connected methylene group, giving a positive charge to -CH2, making the whole carbocation stable when the link between benzyl and bromide is broken. This is an SN1 reaction with two stages that is followed due to the stability of the carbocation. This is a coordinated reaction that takes place in two phases. The halide group first exits the carbocation, and then the nucleophile binds to the cation, producing alcohol. The right answer is (i).

Reaction of C₆H₅CH₂Br with aqueous sodium hydroxide follows

(i) S_N¹ mechanism

(ii) S_N²mechanism

(iii) Any of the above two depending upon the temperature of reaction

(iv) Saytzeff rule

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Payal Gupta | Contributor-Level 10

9 months ago

This is a multiple choice answer as classified in NCERT Exemplar

The Correct Answer is Option (i).

When benzyl chloride is treated with aqueous sodium hydroxide, where -OH is the nucleophile, a nucleophilic substitution reaction occurs, resulting in the formation of benzyl alcohol. The benzene ring is