E2 BASE
STRONG
E2 ELECTROPHILE
3>2>1
E2 SOLVENT
APROTIC PREFERRED
E2 LEAVING GROUP
I>Br>Cl> F
E2 REARRANGMENT
NOT POSSIBLE
E2
ANTIPERIPLANAR
E1 BASE
WEAK
E2 ELCTROPHILE
3>2> (NO 1 OR METHYL)
E1 SOLVENT
PROTIC
E1 LEAVING GROUP
I>Br>Cl>F
E1 Rearrangement
POSSIBLE (HYDRIDE/METHYL SHIFT)
E1 STEROCHEMISTRY
NONE
SN2 nucleophile
strong
SN2 electrophile
Methyl > 1 > 2 ( no 3)
SN2 solvent
aprotic preffered
SN2 leaving group
I>Br> Cl> F
SN2 rearrangment
not possible
SN2 inversion
yes
SN1 nucleophile
weak
SN1 electrophile
3>2 (no methyl)
SN1 solvent
protic
SN1 leaving group
I>Br>Cl>F
SN1 rearrangment
possible (hydride/methyl shifts)
SN1 inversion
no (racemization)