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

Comparing (I) and (II), which of the following statement is correct?


A
Both (I) and (II) has similar enol content
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
Enol content of (II) is more than (I)
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
Enol content of (I) is more than (II)
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
Both (I) and (II) does not exhibit Keto-enol tautomerism
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C Enol content of (I) is more than (II)
In Keto-enol tautomerism, delocalisation takes place between a >C=O group and an alpha H where the equilibrium lies between a keto form and an enol form.

Comparing (I) and (II), the enol form of (II) is less stable than (I) because the four membered ring has 4-π electrons which obeys the 4n rule and thus, it becomes anti-aromatic. Since enol form of (II) is less stable than (I), the enol content of (I) will be more than (II) at equilibrium.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
Join BYJU'S Learning Program
CrossIcon