Chapter 9.7, Problem 9.7P

Interpretation Introduction

Interpretation:

Reason for cis undergo a faster E2 reaction than trans isomer has to be given.

Concept Introduction:

$\text{β}$ elimination:

The elimination reaction takes place from $\text{β}$ carbon of haloalkane is known as $\text{β}$ elimination.

In $\text{β}$ elimination, a base abstract the proton from $\text{β}$ carbon then the removal of halogen ion to form an alkene.

In E2 elimination, the proton and leaving group must be in anti-periplanar geometry.