Question
Question: Which of the following is the correct order of decreasing SN2 reactivity?...
Which of the following is the correct order of decreasing SN2 reactivity?
A
RCH2X > R3CX > R2CHX
B
RCH2X > R2CHX > R3CX
C
R3CX > R2CHX > RCH2X
D
R2CHX > R3CX > RCH2X
Answer
R3CX > R2CHX > RCH2X
Explanation
Solution
In aryl halides the C–X bond has partial double bond character due to resonance so it will not give SN reaction