wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Which one of the following compounds is most reactive for aromatic electrophilic substitution reaction?

A
C6H5CN
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
C6H5F
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
C6H5I
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
C6H5NO2
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C C6H5I
Due to -I effect of X-group, it reduces electron density of benzene, so halobenzene is less reactive than benzene for electrophilic substitution reaction.
As electronegativity of F is the highest among halogens, so its -I effect is highest.
So, reactivity of halobenzene compounds towards electrophillic substitution is Ph - I > Ph - F.
-I effect order is as follows:
NO2>CN>F>I
Hence, C6H5CN and C6H5NO2 will be less reactive towards electrophilic substitution than halobenzene.
Hence, the correct answer is option (c).

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Preparation of Alcohols 2
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon