Summary of Elimination and Nucleophilic Substitution Reactions

		E	SN
Reaction order		Favored by strong bases	Not favored by strong bases
1	Favored by steric hindrance	E1 e.g. R3C-X	SN1 e.g. R3C-X in non-basic solvents
2	Not favored by steric hindrance	E2 e.g. R2CH-X with strong base, R3C-X with strong base	SN2 e.g. CH3-X, RCH2-X (Not R3C-X)