Question

The replacement of chlorine of chlorobenzene to give phenol requires drastic conditions, but the chlorine of 2,4-dinitrochlorobenzene is readily replaced since
A. nitro groups make the aromatic ring electron rich at ortho/prar position.
B. nitro groups withdraw electrons from meta position of the aromatic ring.
C. nitro groups donate electrons at meta position.
D. nitro groups withdraw electrons from ortho/para position at the aromatic ring.

Answer 1

Correct Answer - D
The subsitution of -Cl in chlorobenzene with -OH is an example of nucleophilic substitution. More the deactivation, more is the ease of nucleophilic attack. `-NO_(2)` group deactivates, o- and p-positions more than m-position.