Which of the following halides will be most reactive in $S_{N} 1$ reaction and $S_{N} 2$ reactions, respectively

Question

Which of the following halides will be most reactive in S N 1 reaction and S N 2 reactions, respectively

Aicharya · Accepted Answer

(I) 1 ° allylic halide have less steric hindrance, so it is more reactive for S N 2 reaction. (III) 3 ° allylic halide gives most stable tertiary allylic carbonium ion so most reactive towards S N 1 reaction. ~

Which of the following halides will be most reactive in S N 1 reaction and S N 2 reactions, respectively

Solution