Questions

CHE 008B A01 SS1 2025 Lecture 5/6 - Activation of Substituted Benzenes

Multiple choice

Which of the following is true about an ACTIVATOR for electrophilic aromatic substitution? (select all that apply)

Options

A.it will donate electrons to benzene

B.it will withdraw electrons from benzene

C.it can work through induction only

D.it can work through resonance only

E.it can work through induction or resonance.

F.it will make the ring a better nucleophile

G.it will make the ring a worse nucleophile

H.it makes benzene electron poor

I.it makes benzene electron rich

J.none of these

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Step-by-Step Analysis

In electrophilic aromatic substitution, an activator is a substituent that increases the electron density on the benzene ring, making it more reactive toward electrophiles. Option 1: 'it will donate electrons to benzene' — This is true. Activators typically donate electrons via resonance or inductive effects, increasing the ring's electron density and facilitating attack by ......Login to view full explanation

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