Types of Alkene Reactions C=C The double-bond in alkenes make them chemically reactive (pi bond electrons held more loosely) Four major types of alkene reactions -Addition -Elimination -Substitution Rearrangement 3Types of Alkene Reactions • The double-bond in alkenes make them chemically reactive (pi bond electrons held more loosely) • Four major types of alkene reactions – Addition – Elimination – Substitution – Rearrangement C=C 3