Illustrated Glossary of Organic Chemistry

Cope rearrangement: A [3,3]-sigmatropic reaction in which a 1,5-diene rearranges into another, isomeric 1,5-diene.

Cope rearrangement of hepta-1,5-diene gives 3-methylhexa-1,5-diene.


In the oxyCope rearrangement, a 1,5-dien-3-ol rearranges via a [3,3]-sigmatropic shift, followed by tautomerization.