NTA Abhyas JEE Main2020ChemistryHaloalkanes and HaloarenesPractice
Which of the following halides will be most reactive in S N 1 reaction and S N 2 reactions, respectively
Options
- A(I), (II)
- B(II), (I)
- C(I), (III)
- D(III), (I)
Correct answer
D. (III), (I)
Step-by-step solution
(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.