Cope Rearrangement: [3,3]-Sigmatropic Shift in 1,5‑Dienes
Learn the Cope rearrangement: concerted [3,3] shift of 1,5-dienes, chair transition state, and how substituents affect feasibility and product distribution.
Reaction: 1,5-diene → isomerized 1,5-diene
What it does: Rearranges sigma bond position within a diene system
Typical reagents: Heat
Key intermediate: None (concerted)
Driving force: Thermodynamics of substituted alkene positions