Chapter 4, Problem 4.32P

Interpretation Introduction

Interpretation:

Using the Hammond’s postulate, the reaction which is faster among addition of $\text{HBr}$ to

$\text{2-methylpropene}$ and addition of $\text{HBr}$ to $trans\text{-2-butene}$ is to be stated.

The reason behind the assumption that the energy difference between the starting alkenes can be ignored is to be stated.

Concept introduction:

Hammond’s postulate states that the structure and energy of the transition state, of a reaction, can be approximated using the structure and energy of intermediate. The energy of the intermediate should be relatively higher than the reactants and products for this estimation.