Examples of 'orthoester' in a sentence
Meaning of "orthoester"
Orthoester (noun): A type of organic compound
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- Any compound, of general formula R-C(OR^')₃, having three alkoxy groups on a single carbon atom
How to use "orthoester" in a sentence
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orthoester
Purification by flash chromatography afforded orthoester derivatives.
The orthoester is preferably a noncyclic orthoester.
The immediate product is called an orthoester.
Each orthoester protected nucleoside has different acid lability.
These reactive groups are epoxy and orthoester groups.
An orthoester is particularly advantageous.
General procedure for orthoester formation.
The process may optionally involve the addition of an orthoester.
The use of the orthoester group has in particular a double advantage.
The process of the present invention does not require an orthoester.
Each orthoester must contain at least one alpha hydrogen atom.
Polyolefins and polyolefin copolymers containing orthoester groups are useful as compatibilizing agents.
The resulting orthoester is then debenzoylated with sodium methoxide in methanol.
The other two substituents of the orthoester can be any organic group.
Orthoester containing compounds represent another preferred embodiment of the present invention.
See also
The functionalized polyphenylene ethers contain grafted ethylenically unsaturated orthoester groups.
Orthoester derivatives of crown ethers as carriers for pharmaceutical and diagnostic compositions.
These ammonium salts can lead to homopolymerization of the starting hydroxy orthoester.
The resulting ribitol orthoester is then rearranged in situ to give the ribitol glycoside.
The process of the present invention comprises addition of an orthoester to the reaction mixture.
Orthoester bearing chlorotriazines have been used as capping agents for solution capping of polyphenylene ethers.
The procedure described above was repeated using the appropriate hydroxyacetamidine and orthoester.
The orthoester Claisen rearrangement in the preparation of hirsutine type indole alkaloids.
The value of the subscript p also depends on the cyclic structure of the orthoester moiety.
Heating XVII with dimethylformamide dimethylacetal or with an orthoester can provide the pyrazolopyridinone compounds XVIII.
An epoxy or orthoester functionalized elastomer compound ; and.
And a stabilising amount of orthoester of the formula,.
In some embodiments, the esterification agent is an orthoester.
In another embodiment, the orthoester is trimethyl orthoacetate.
Excess orthoester reagent is then removed by distillation under vacuum ( aspirator ).
In further embodiments, the orthoester is trimethyl orthoacetate.
In another embodiment, a polish filtration of the batch is performed after addition of the orthoester.
In one embodiment, the orthoester is trimethyl orthoformate.
The reactive derivative of formic acid is preferably the acid halide, orthoester or anhydride.
In one embodiment, the orthoester is triethylorthoformate with ethanol as an optional solvent.
As a consequence, the crown ether comprises at least one orthoester or a thio-analogue thereof.
As a result, the modified orthoester becomes more labile to acid-catalyzed hydrolysis.
Typically, the beta-diketone is slowly added to the titanium orthoester and the mixture is stirred.
To overcome this problem, the orthoester is preferably added after the reaction has commenced.
This opens the way to multiple O-insertion reactions, eventually leading to the orthoester.
However, some residues of the orthoester may remain in the ionic liquid.
The composition of claim 24 wherein the gamma-hydroxybutyrate prodrug is an orthoester.
For example, the additive may be formed by the orthoester or by a mixture of orthoesters.
Figures 3 and 4 demonstrate the pH-dependent hydrolysis of another specific orthoester.
They may contain, however, two glycoside or orthoester glycoside residues simultaneously.
A method according to claim 14 wherein the poly ( phenylene ether ) resin is functionalized with halo orthoester compound.
Preferebly the additive may comprise a liquid orthoester having a low boiling temperature, e . g.
With units of type U, it is possible to use, as reagent group an orthoester.
The cyclic analog 2-oxacyclopentylidene orthoester affords the diol directly upon acid hydrolysis.
Orthoester Claisen rearrangement in the syntheses of 3-epi-corynantheine-type indole alkaloids.
