Question

the tautomer containing the carbnyl groupis designated as __ form. option are (a) enol. (b) keto. (c) enol keto . (d none of these.​

Answer 1

Answer:

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c) Enol keto .

Explanation:

Keto-enol tautomerization is chemical equilibriumbetween a keto form and enol form. 

The interconversion of two forms involved the movement of proton and the shifting of electrons. 

 A compound containing a carbonyl group (C=O) is normally in rapid equilibrium with an enol tautomer, which contains a pair of double bonded carbon atoms adjacent to a hydroxyl (-OH).  

For a carbonyl compound to exhibit tautomerism, the essential condition is that it must have at least one alpha H atom.

Among the given set of compounds (A and C) do not possess an alpha H, whereas compound (B, D) posses an alpha H. 

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