Identify the major mechanistic pathway when 1-chloropentane is treated with KCN.Select answer from the options belowE1 SN1 SN2 E2
Question
Identify the major mechanistic pathway when 1-chloropentane is treated with KCN.
Select answer from the options below:
- E1
- SN1
- SN2
- E2
Solution
The major mechanistic pathway when 1-chloropentane is treated with KCN is SN2.
Here's why:
-
The substrate is a primary alkyl halide (1-chloropentane), which is most reactive towards an SN2 mechanism.
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KCN is a strong nucleophile, which favors the SN2 mechanism.
-
The reaction is likely performed in a polar aprotic solvent, which also favors the SN2 mechanism.
-
The SN2 mechanism is a one-step process where the nucleophile (KCN) attacks the substrate (1-chloropentane) and the leaving group (Cl-) leaves simultaneously.
So, the correct answer is SN2.
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