Enolic form of acetyl acetone is stabilised due to :

resonance as a result of conjugation.

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intramolecular hydrogen bonding.

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van der Waals force.

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dipole - dipole repulsion.

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Solution

The correct options are
A resonance as a result of conjugation.
B intramolecular hydrogen bonding.

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Similar questions

Q. Assertion A: Enol form of acetone

[C H_{3} C O C H_{3}]

exists in

< 0.1 %

quantity. However, the enol form of the acetyl acetone

[C H_{3} C O C H_{2} O C C H_{3}]

exists in approximately

15 %

quantity.
Reason R: Enol form of acetyl acetone is stabilized by intramolecular hydrogen bonding, which is not possible in enol form of acetone.
Choose the correct statement.

Q. Acetyl acetone in enol form is more stable in polar aprotic solvents due to

Proteins are found to have two different types of secondary structures viz $α -$ helix and $β -$ pleated sheet structure. $α -$ helix structure of protein is stabilised by
(a) peptide bonds (b) van der Waals, forces
(c) hydrogen bonds (d) dipole-dipole interactions

Q. The conversion of a keto form into enol is enolisation. It depends on structural factor, temperature and nature of solvent. Resonance and hydrogen bonding increases enol content. Enolic form of phenol is more stable than keto form by -13 kcal/mole of energy hence phenol exist exclusively as an enol. Enolic tautomer is less polar due to intramolecular hydrogen bonds than the corresponding keto form. Any polar solvent would decrease the enolisation and favour keto form intramolecular hydrogen bonding stablized enol form by 7kcal/mole and resonance stabilizes enol form by 15 kcal/mole.
The enol content of ethyl acetoacetate is maximum in :

Q. Enolic form of acetone contains:

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Enolic form of acetyl acetone is stabilised due to :

The correct options are A resonance as a result of conjugation. B intramolecular hydrogen bonding.

The correct options are
A resonance as a result of conjugation.
B intramolecular hydrogen bonding.