Question

Reaction of \[\ce{C6H5CH2Br}\] with aqueous sodium hydroxide follows ______.

पर्याय

• S_N1 mechanism

• S_N2 mechanism

• Any of the above two depending upon the temperature of reaction

• Saytzeff rule

Answer 1

Reaction of \[\ce{C6H5CH2Br}\] with aqueous sodium hydroxide follows S_N1 mechanism.

Explanation:

Greater the stability of carbonation, greater will be its ease of formation from alkyl halide and faster will be the rate of reaction. In case of alkyl halides, 3° carbocations.

For the same reasons, allylic and benzylic halides show high reactivity towards the S_N1 reaction. The carbonation thus formed gets stabilized through resonance as shown below:

So, as the given compound, \[\ce{C6HCH2Cl}\] is a benzylic halide, it would undergo S_N1 reaction.