L1 /
2
CH1012
SN1
REACTIONS
THE SN1
MECHANISM
3o alkyl halides R3C-X always SN1
Experimentally
Rate (of
subs.) = k [R3CX]
Proposed
Mechanism
planar intermediate
carbocation
(Pr = C3H7)
slow
fast
S
S
R
Equal amounts of R, S - a racemic mixture
is formed.
