Which of the following substituents on benzen | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The nitroso group $(-NO)$ is unique because it can exhibit both $+M$ (mesomeric) and $-M$ effects depending on the nature of the attacking species

Vedclass · Accepted Answer

$-NO$

Vedclass · Answer

(B) The nitroso group $(-NO)$ is unique because it can exhibit both $+M$ (mesomeric) and $-M$ effects depending on the nature of the attacking species.In electrophilic aromatic substitution $(E^+)$,the lone pair on the nitrogen atom can be donated to the ring,stabilizing the intermediate carbocation at ortho and para positions ($+M$ effect).In nucleophilic aromatic substitution $(Nu^-)$,the nitrogen atom can accept electron density from the ring,stabilizing the intermediate carbanion at ortho and para positions ($-M$ effect).Therefore,$-NO$ is ortho-para directing in both types of substitutions.

Which of the following substituents on benzene is ortho-para directing in electrophilic substitution and ortho-para directing in nucleophilic substitution?

Similar Questions

Amongst the following,the compound that is nitrated with difficulty is

Which of the following represents a nucleophilic aromatic substitution reaction?

The chemicals used for preparing acetophenone via Friedel-Crafts acylation are:
$(A)$ $C_6H_6$
$(B)$ $CH_3COCH_3$
$(C)$ $CH_3COCl$
$(D)$ Anhydrous $AlCl_3$

Identify the product formed from chlorobenzene on heating with conc. $HNO_3$ in the presence of conc. $H_2SO_4$.

The major product of the following reaction is:

Vedclass Test Series

Exam Paper Generator

Online Exam Module