Examples of 'ketal' in a sentence
Meaning of "ketal"
Ketal (noun): Refers to a chemical compound, specifically a type of reagent or functional group in organic chemistry
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- Any acetal derived from a ketone
How to use "ketal" in a sentence
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ketal
Formation of the ketal was accompanied by alkene rearrangement.
No aromatic or heteroaromatic moiety as a component of an ester or ketal.
Avermectin ketal derivatives useful as antiparasitic agents.
Keto groups may be protected in the form of a ketal.
The ketal is cleaved under acidic conditions.
The characterization of the ketal is given in detail hereafter.
The ketal was further purified by means of distillation.
The resulting unsymmetrical mixed ketal was purified on silica.
The ketal function is cleaved by known methods.
With a diol to the ketal.
A sample of the ketal was analyzed by capillary gas chromatography.
The dioxolane according to the invention can be an acetal or a ketal.
The ketal was isolated as a yellow oil.
These esters are prepared by the hydrolysis of the corresponding ketal.
A ketal is an example of such a cyclic structure.
See also
This could be for instance a cyclic ketal structure or alike.
The ketal moiety further acts as a protecting group.
One usual procedure to cleave ketal or acetal groups is acidic treatment.
The ketal function is more preferably cleaved in water as a solvent.
Particularly the acetal or ketal is formed under the influence of an acid.
The ketal may be removed by using conventional acid hydrolysis methods.
The more systematic name for this structure is an isopropylidene ketal.
The glycerol ketal starting materials are known in the art.
Another option is protection of the carbonyl by a protecting group such as ketal.
For these studies ketal and thioketal derivatives of monoketoandrostanes were prepared.
The invention relates to a method of the preparation of a steroid derivative ketal.
Acetal and ketal bonds may also bind carbohydrate to peptide.
Presence of ketal.
Removal of the ketal protecting group can provide a compound of this invention.
The method is disclosed for the manufacture of a glycerol ketal of ehyl levulinate.
The ketal protecting group is removed by treatment with acid in an inert solvent.
The present invention relates to the use of menthone ketal compounds as flavor ingredients.
The acetal or ketal group can be open or can have a ring structure.
A composition according to any preceding claim in which the thermal initiator is a peroxy ketal.
Examples of the ketal include benzyl dimethyl ketal and benzyl diethyl ketal.
The protecting group can be removed by hydrolysis of the ketal using dilute aqueous acid.
The mixed ketal intermediate thus obtained is then hydrolyzed during the second step.
Aldehyde to acetal conversion Ketone to ketal conversion.
Preferably the ketal is formed from the above mentioned unsaturated ketone and an alcohol.
An acidic agent in an aqueous medium is used in the case where K is a ketal.
Acetal and ketal bonds can also optionally be formed between amino acids and carbohydrates.
Vicinal diols form a 5 membered ring in a ketal.
Ketal groups are reported to be labile in the presence of Lewis acids.
Vicinal diols form a 5 membered ring in a ketal or acetal.
Deprotecting the ketal IX to produce the cycloalkanone intermediate VIII.
An aldehyde or ketone moiety, or a hydrate thereof or a ketal or acetal thereof ;.
The spiroketal product G was generated via intramolecular ketal formation reaction.
Alternatively, the separation can be done after removal of the ketal.
Removing the ketal protecting group by acid hydrolysis ;.
In particularly preferred embodiments, the initiator is a benzil dialkyl ketal.
