JEE CHEMISTRY MCQ: HALOALKANES AND HALO ARENES

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Analyzing +4 | -1

Which one of the following is excellent substrate for

\mathrm{SN}^2

reaction?

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Correct option: D

{\text{C}}{{\text{H}}_3} - \mathop {\text{C}}\limits^{\begin{array}{cccccccccccccccccccc} {\text{O}} \\ {||} \end{array}} - {\text{C}}{{\text{H}}_2}{\text{Br}}

Option D (

{\text{C}}{{\text{H}}_3} - \mathop {\text{C}}\limits^{\begin{array}{cccccccccccccccccccc} {\text{O}} \\ {||} \end{array}} - {\text{C}}{{\text{H}}_2}{\text{Br}}

) is the excellent substrate for

\mathrm{SN}^2

reaction because the presence of a strong -I group on the alpha-carbon stabilizes the transition state.

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