In which of the following cases enol content will be higher than the keto content in n-hexane?

Options

A. `CH_(3)-overset(O)overset(||)C-overset(O)overset(||)C-CH_(3)`
B.
C.
D. `H_(5)C_(2)O-overset(O)overset(||)C-CH_(2)=overset(O)overset(||)C-OC_(2)H_(5)`

Answer

B, C

Explanation

`CH_(3)-overset(O)overset(||)C-underset(O)underset(||)C-CH_(3)`

less repulsion between two `overset(O)underset( C )(||)` bonds More repulsion C - C bond rotations not Possible and two `overset(O)underset( C )(||)` are more stable than `overset(O)underset( C )(||)` & C = C bond. Repulsions minimised and stabilized by H- bonding.

dve methylene group is present in between two strong electron with drawing groups.