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Question
Which of the following compounds will exhibit tautomerism?
Which of the following compounds will exhibit tautomerism?
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Solution
The correct option is C
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.
Carbonyl compound which doesn't have alpha hydrogen will not exhibit Keto-enol tautomerism.
In compound (a), (b) and (c) we have alpha hydrogen available which involve in delocalisation with carbonyl group to exhibit Keto enol tautomerism.
In compound (d), there is no alpha hydrogen so it does not exhibit Keto-enol tautomerism.
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.
Carbonyl compound which doesn't have alpha hydrogen will not exhibit Keto-enol tautomerism.
In compound (a), (b) and (c) we have alpha hydrogen available which involve in delocalisation with carbonyl group to exhibit Keto enol tautomerism.
In compound (d), there is no alpha hydrogen so it does not exhibit Keto-enol tautomerism.
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