why benzyllic halide and allilyic halide undergoes sn2 mechanism?

Asked by chandni tiwari | 10th Nov, 2010, 12:00: AM

Expert Answer:

Dear Student
 
Allilic halides also undergo both SN1 and SN2 types of nucleophilic mechanisms. 
It easily undergoes SN2 mechanism, since it is a primary halide.As e know primary halides easily undergo SN1 pathway.
 
Same is the case with benzyllic halide. If it is 10 benzyllic halide it will undergo SN2 mechanism.
While 20and 30 benzyllic halides undergo SN1 pathway of nucleophilic substitution.
we hope that clarifies your query.
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Answered by  | 13th Nov, 2010, 09:55: AM

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