Chapter 20.7, Problem 15P

Interpretation Introduction

Interpretation:

Imidazole, pyrrole and benzene are should be ranked from most reactive to least reactive in the electrophilic aromatic substitution.

Concept Introduction:

Aromatic compounds such as benzene which is having closed ring and alternate double bonds undergo electrophilic aromatic substitution reactions. Electrophilic aromatic substitution takes place when an electrophile displaces a hydrogen atom of an aromatic ring. There are five most common electrophilic aromatic substitution reactions that are halogenation, nitration, sulfonation, Friedel-Crafts acylation and Friedel-Crafts alkylation. All these reactions take place by same two-step mechanism.