enol form

Nonetheless, the enol form is important for some reactions.

At the time of this correct assignment, it was suggested that the enol form was not dominant.

Phenol therefore exists essentially entirely in the enol form.

The enol form is a vinylogous analogue of a carboxylic acid.

The resulting mucoxyhalic acids exist as a mixture of keto and enol forms.

One mechanism proposes that the color of the emitted light depends on whether the product is in the keto or enol form.

These results are consistent with a mechanism of microbial hydroxylation involving the enol form of the Δ4-3-ketone.

The enol form has C symmetry, meaning the hydrogen atom is shared equally between the two oxygen atoms.

Malondialdehyde mainly exists in the enol form:

Curcumin can exist in several tautomeric forms, including a 1,3-di keto form and two equivalent enol forms.

Guanine has two tautomeric forms, the major keto form (see figures) and rare enol form.

Crystalline dimedone contains chains of molecules, in the enol form, linked by hydrogen bonds:

They are essentially found in their enol form, which exhibits acidic properties due to the relative lability of the hydroxylic proton.

The racemization occurs by way of an intermediate enol form in which the former stereocenter becomes planar and hence achiral.

One common mutagenic base analog is 5-bromouracil, which resembles thymine but can base-pair to guanine in its enol form.

The keto and enol forms of acetylacetone coexist in solution; these forms are tautomers.

In the case of malonaldehyde (propanedial), over 99 mole% of the compound is in the enol form.

For example, Arg 218 has electrostatic interactions with other nearby residues, restricting oxyluciferin from tautomerizing to the enol form.

The keto–enol equilibria in variously substituted 4-pyrazolinones were studied in several solvents; these compounds exist in the enol form only.

The enol form is more energetically stable in the solid phase and in organic solvents, while in water the 1,3-di keto dominates.

In collaboration with various other chemists, Knorr proved the concept that ethyl acetoacetate existed in a keto and an enol forms.

Although the reaction product is often shown as a hydroxyquinoline (the enol form), it is believed that the quinolone (keto form) predominates.

The simple alkyl or aryl 4-keto methylquinolines exist essentially as the keto forms, but the quinoline-4-pyruvates are exclusively or substantially in the enol forms.