What is the Cope rearrangement?
A) [2,2] sigmatropic rearrangement with all atoms of the cyclic transition step are carbon atoms
B) [2,2] sigmatropic rearrangement with heteroatoms
C) [2,3] sigmatropic rearrangement with all atoms of the cyclic transition step are carbon atoms
D) [2,3] sigmatropic rearrangement with heteroatoms
E) [3,3] sigmatropic rearrangement with all atoms of the cyclic transition step are carbon atoms

Question

Quizplus · Accepted Answer

The Cope rearrangement is a [3,3] sigmatropic rearrangement where all atoms involved in the cyclic transition state are carbon atoms. This reaction involves the shifting of a σ-bond adjacent to a π-system to the other end of the π-system, resulting in a new σ-bond and a rearranged π-system.

What Is the Cope Rearrangement