Give example of a ketone that does not exhibit tautomerism.

Explanation

2,2,4,4 - tertramethylpentan - 3 - one
`overset(1)(C)H_(3)-overset(CH_(3))overset(|)underset(H_(3)C)(""^2C)-overset(3)underset(O)underset(||)(C)-overset(CH_(3))overset(|)underset(CH_(3))underset(|)(""^4C)-overset(5)(C)H_(3)`
does not exhibit tautomerism as it has no `alpha` H - atom.