Chapter 9, Problem 9.52P

Interpretation Introduction

Interpretation:

The given substrates are to be ranked in order from the slowest $\text{E1}$ reaction rate to the fastest.

Concept introduction:

Carbocation stability increases as the number of alkyl groups bonded to the positively charged C of a carbocation increases. In the substrate, therefore, each alkyl group surrounding the C atom bonded to the leaving group increases the rate of ${\text{S}}_{\text{N}}\text{1}$ and $\text{E1}$ reactions. As the number of alkyl groups on the carbon bonded to the leaving group increases, the rate of an $\text{E1}$ reaction increases.