Chapter 9, Problem 9.16P

Interpretation Introduction

Interpretation:

The reaction that will proceed the slowest by the $\text{E1}$ mechanism is to be identified. The reaction that will proceed the fastest by the $\text{E2}$ mechanism is to be identified.

Concept introduction:

The $\text{E1}$ reaction is sensitive to leaving group ability but relatively insensitive to base strength. The $\text{E2}$ reaction is sensitive to both leaving group ability and base strength.