Keto-enol tautomerism is found in

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) Keto-enol tautomerism requires the presence of at least one $\alpha$-hydrogen atom adjacent to a carbonyl group $(C=O)$.$1. \ C_6H_5-CO-CH_3$ (Ace

Vedclass · Accepted Answer

$Both \ (b) \ and \ (c)$

Vedclass · Answer

(D) Keto-enol tautomerism requires the presence of at least one $\alpha$-hydrogen atom adjacent to a carbonyl group $(C=O)$.$1. \ C_6H_5-CO-CH_3$ (Acetophenone) has three $\alpha$-hydrogens on the methyl group,allowing it to form an enol: $C_6H_5-C(OH)=CH_2$.$2. \ C_6H_5-CO-CH_2-CO-CH_3$ ($1$-phenylbutane$-1,3-$dione) has active methylene hydrogens between two carbonyl groups,which are highly acidic and readily undergo tautomerism to form an enol: $C_6H_5-CO-CH=C(OH)-CH_3$.$3. \ C_6H_5-CHO$ (Benzaldehyde) has no $\alpha$-hydrogen atom,so it cannot exhibit keto-enol tautomerism.Therefore,both $(b)$ and $(c)$ exhibit keto-enol tautomerism.

Similar Questions

Which of the following compounds is not resonance stabilized?

Which types of isomers of $C_4H_8$ are possible? Give their names and structures.

Among the following reactions,a mixture of diastereomers is produced from

The compound $C_{4}H_{10}O$ can show which of the following types of isomerism?

Which of the following exhibits geometrical isomerism?

Vedclass Test Series

Exam Paper Generator

Online Exam Module