Which of the following statements explain why aryl halides and vinyl halides do not undergo nucleophilic substitution by either the SN1 or SN2 mechanism?
A) They don't undergo SN1 reactions because a higher percent s-character makes the bond longer and stronger.
B) They don't undergo SN2 reactions because a higher percent s-character makes the bond shorter and stronger.
C) They don't undergo SN2 reactions because heterolysis of the C-X bond forms a highly unstable carbocation.
D) They don't undergo SN1 reactions because the carbocation is highly electronegative.
Correct Answer:
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