elimination reactions

Question

E2 elimination requires:

RankGuru · Accepted Answer

The **$E2$ (Elimination Bimolecular)** mechanism involves the concerted removal of a proton and a leaving group.
- **Base**: Requires a **strong base** ($EtO^-, OH^-, NH_2^-$) to abstract the $\beta$-proton.
- **Geometry**: The reaction requires **Anti-periplanar** geometry. The $C-H$ bond being broken and the $C-X$ bond being broken must be in the same plane but in opposite directions ($180^\circ$ dihedral angle).
- This minimizes electronic repulsion between the electron-rich base and the leaving group.

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elimination reactions

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