Question

The increasing order of reactivity of the following compounds in $S_{N}2$ reaction is

• A. $C_6{H}_5{\mathrm{CH}}_2\mathrm{Br}$
• B. $C_6{H}_5\mathrm{CH}\left(C_6{H}_5\right)\mathrm{Br}$
• C. $C_6{H}_5\mathrm{CH}\left({\mathrm{CH}}_3\right)\mathrm{Br}$
• D. $C_6{H}_{5}C\left({\mathrm{CH}}_3\right)\left(C_6{H}_5\right)\mathrm{Br}$

Answer 1

The reactivity of a substrate decreases in the $S_{N}2$ reaction as the bulkiness increases.