Chapter 19.21, Problem 33P

Interpretation Introduction

Interpretation:

The reason as to why a diazonium group on a benzene ring cannot be used to direct an incoming substituent to the meta position is to be stated.

Concept Introduction:

Effect of an electron withdrawing groups:

An electron withdrawing groups and an electron releasing groups have significant role in the activation and deactivation of benzene rings during an electrophilic substitution reaction. An electron withdrawing group deactivates the benzene rings by reducing the electron density on the rings.

Rule: The rate of reactions in aromatic electrophilic substitution reactions rely upon the presence of an electron releasing or electron withdrawing group.