Presence of a nitro group in a benzene ring:

Question

Presence of a nitro group in a benzene ring: (A) Activates the ring towards electrophilic substitution (B) Renders the ring basic (C) Deactivates the ring towards nucleophilic substitution (D) Deactivates the ring towards electrophilic substitution

Tardigrade Admin · Accepted Answer

—NO2 group shows -M effect, so withdraws the electron density from the ring and hence deactivate the ring towards electrophilic aromatic substitution.

Q. Presence of a nitro group in a benzene ring:

Activates the ring towards electrophilic substitution

Renders the ring basic

Deactivates the ring towards nucleophilic substitution

Deactivates the ring towards electrophilic substitution

$— N O_{2}$ group shows $- M$ effect, so withdraws the electron density from the ring and hence deactivate the ring towards electrophilic aromatic substitution.

Q. Presence of a nitro group in a benzene ring:

Activates the ring towards electrophilic substitution

Renders the ring basic

Deactivates the ring towards nucleophilic substitution

Deactivates the ring towards electrophilic substitution

—NO2​ group shows −M effect, so withdraws the electron density from the ring and hence deactivate the ring towards electrophilic aromatic substitution.

$— N O_{2}$ group shows $- M$ effect, so withdraws the electron density from the ring and hence deactivate the ring towards electrophilic aromatic substitution.