Which of the following statement is correct for the reactivity in §N2 reaction?
is more reactlve tnan 
is more reactive than
is more reactive than 
is more reactive than 
Text Solution
Verified by ExpertsB
is more reactive than 
The electronegativity order of hybridized carbons is sp > sp 2 > sp 3 . So in an allylic halide, such as CH 2 = CH – CH 2 - I, the alpha carbon is much more partially positive than the alpha carbon in CH 3 - CH 2 – CH 2 -I. Therefore, the attacking nucleophile will be attracted to the alpha carbon more in the allylic halide compound than in the primary halide. Hence, allylic halides tend to follow S N 2 pathways more than primary halides.
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