Examples of 'silylating agent' in a sentence
Meaning of "silylating agent"
silylating agent - A silylating agent is a chemical substance used in organic synthesis to introduce silyl groups (a silicon atom attached to a substituent) into organic molecules for various purposes
How to use "silylating agent" in a sentence
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silylating agent
The preferred silylating agent is dimethyl dichlorosilane.
The structure is rendered hydrophobic by the use of a silylating agent.
A very useful silylating agent is hexamethyldisilazane.
Hexamethyldisilazane is a preferable silylating agent.
A very suitable silylating agent is hexamethyldisilazane.
Possibly an aqueous phase may be present under the silylating agent.
The silylating agent is typically a silyl chloride or trifluoromethanesulfonate.
This process occurs differently according to the silylating agent chosen.
The preferable silylating agent is hexamethyldisilazane.
The solution may be an aqueous solution or a hydrocarbon solution of the silylating agent.
The silylating agent can thus be solid or liquid.
The catalyst thus obtained is preferably contacted with a silylating agent before use.
The silylating agent is subsequently added dropwise via a syringe.
The catalyst may also be treated with an organic silylating agent at elevated temperature.
In the process a silylating agent is used in the presence of a quinone.
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The titanosilicate catalyst may be such that a silanol group thereof is silylated by a silylating agent.
The amount of silylating agent employed can vary widely.
When L represents halogen the Lewis Acid can generally be omitted when a silylating agent is present.
The silylating agent is therefore performing the function of an endcapper.
Reacting the reactivated catalyst with an organic silylating agent to form a silylated activated catalyst.
The silylating agent is added all at once to the reaction mixture.
The base is preferably nonreactive with the silylating agent selected for the reaction.
The silylating agent is selected from the group consisting of silylamides and bissilyamides.
Still more preferably, the silylating agent is triethylsilyl chloride.
The silylating agent not only accelerated the reactions but also gave higher yields.
Is an alkylsilyl protecting group corresponding to the silylating agent employed ;.
More preferably, the silylating agent is hexamethyldisilazane.
According to the present invention, it is essential to use tetrachlorosilane as the silylating agent.
A preferred silylating agent is t-butyldimethylsilyl trifluoromethanesulfonate.
The process according to claim 38 wherein the silylating agent is chlorotrimethylsilane.
The most preferred silylating agent is tert-butyldimethylsilyl trifluoromethanesulfonate.
The method of claim 16 wherein the organic silylating agent is an organodisilazane.
A preferred silylating agent is hexamethyldisilazane represented by the following formula,.
The process according to claim 37 wherein the silylating agent is a trialkylsilyl halide.
The preferred silylating agent for pyrimidine bases is t-butyldimethylsilyl triflate.
Suitably, the coated catalyst is contacted with a silylating agent under appropriate conditions.
Preferably, the silylating agent in the above process is t-butyldimethylsilyl chloride.
In a more preferred aspect of this invention, the silylating agent is TBSOTf or TBSCl / NaI.
The silylating agent reactive amine groups are preferably secondary and / or tertiary amine groups.
At least one monofunctional silylating agent having the general formula,.
The silylating agent is, as previously outlined, the chemical agent that carries the necessary silicon.
Furthermore, a longer dwell time in the silylating agent can produce silylation of the outer surface.
The process of the invention starts with reaction of the compound ( II ) with a silylating agent.
In this case, the silylating agent is present as a fluid.
More specifically, a suspension is prepared from a nucleic acid base and a silylating agent such as hexamethyldisilazane.
A process of Claim 3 wherein the silylating agent is a mixture of trimethylchlorosilane and hexamethyldisilazane.
A process according to Claim 1 further characterised in that the silylating agent is a cyclosilazane.
The silylating agent will preferably silylate the carboxy group when R ⁶ is hydrogen.
The composition of Claim 1 wherein the silylating agent is hexamethyldisilazane.
The silylating agent includes t-butyldimethylsilyl chloride, triisopropylsilyl chloride, t-butyldiphenylsilyl chloride and so on.
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One or more silylating agents may be employed
The protecting group reagent may be a silylating reagent
The preferred silylating agent is dimethyl dichlorosilane
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