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Decreasing order of enol content of the ...

Decreasing order of enol content of the following compound in liquid phase
I) `CH_(3)-overset(O)overset(||)C-CH_(2)-overset(O)overset(||)C-O-Et` II) `CH_(3)-overset(O)overset(||)C-CH_(2)-overset(O)overset(||)C-CH_(3)`
III) `Ph-overset(O)overset(||)C-CH_(2)-overset(O)overset(||)C-Ph`

A

I `gt` II `gt` III `gt` IV

B

III `gt` II `gt` I `gt` IV

C

III `gt` II `gt` IV `gt` I

D

II `gt` III `gt` I `gt` IV

Text Solution

Verified by Experts

The correct Answer is:
B
`underset("less stable")(CH_(3)-overset(OH)overset(|)C=CH-overset(O)overset(||)C-O)et`
`underset("stable")(CH_(3)-overset(OH)overset(|)C=CH-overset(O)overset(||)C-)CH_(3)," "underset("More stable")(Ph-overset(OH)overset(|)C=CH-overset(O)overset(||)C-)Ph`

Anti -Aromatic
Least Stable
Keto group is more with drawing group than ester group.
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