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Question
Which of the following statement is correct for the reactivity in SN2 reaction?
Which of the following statement is correct for the reactivity in SN2 reaction?
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Solution
The correct option is B
The electronegativity order of hybridized carbons is sp>sp2>sp3. So, in an allylic halide, such as CH2=CH–CH2–I, the carbon is much more partially positive than the carbon in CH3–CH2–CH2I.
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 SN2 pathways more than primary halides.
The electronegativity order of hybridized carbons is sp>sp2>sp3. So, in an allylic halide, such as CH2=CH–CH2–I, the carbon is much more partially positive than the carbon in CH3–CH2–CH2I.
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 SN2 pathways more than primary halides.
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