Elimination and Electrophilic Addition Reactions
Two kinds of reaction are possible when a nucleophilic reagent attacks a substituted alkane. In nucleophilic substitutions the nucleophile displaces a weaker nucleophile from its bonded site. In elimination reactions the nucleophile attacks a neighbouring C-atom and causes elimination of the leaving group and a proton leading to the formation of an alkene. The reagents and conditions determine which reaction predominates.

In this module, we will also present the key features of addition reactions, where electrophilic reagents interact with electron rich multiple bonds.
Writing Linear Structures
Primary, Secondary and Tertiary Hydrogen Atoms
The Products of an Elimination Reaction
Products of Elimination: Zaitsev's Rule
Products of Elimination: Zaitsev's Rule Q1
Products of Elimination: Zaitsev's Rule Q2
The E1 Mechanism
The E2 Mechanism

 Simultaneous E and SN Reactions
Relative Rates of Elimination and Substitution
Electrophilic Addition Reactions
Electrophilic Addition: Markovnikoff Rule
Markovnikoff Rule Questions
Session Summary
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