Which of the following statement is correct for the reactivity in S N 2 reaction?

Question

Aicharya · Accepted Answer

The electronegativity order of hybridized carbons is

s p > s p^{2} > s p^{3}

. So in an allylic halide, such as

C H_{2} = C H - C H_{2} - I

, the alpha carbon is much more partially positive than the alpha carbon in

C H_{3} - C H_{2} - C H_{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.

Which of the following statement is correct for the reactivity in S N 2 reaction?

Solution