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Q.

C6H5-CH2-NH2+RXC6H5-CH2-NH-R

Which of the following alkyl halides is best suited for this reaction by SN1 mechanism?

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a

 CH3-Br

b

 C6H5-Br

c

 C2H5-Br

d

 C6H5-CH2-Br

answer is C.

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Detailed Solution

C6H5-CH2-Br is best suited for this reaction through a SN1 mechanism as the carbocation(benzyl carbocation) formed in the reaction is resonance stabilized. The benzyl carbocation formed is C6H5-CH2+. Reactivity in these reactions depends upon the stability of the carbocation intermediate.

Hence, the correct answer is option C) C6H5-CH2-Br.

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