Examples of 'phase transfer agent' in a sentence
Meaning of "phase transfer agent"
phase transfer agent: It is a compound that facilitates the transfer of a reactant from one phase to another in a chemical reaction, typically from an organic phase to an aqueous phase
How to use "phase transfer agent" in a sentence
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phase transfer agent
The phase transfer agent is a polar solvent.
Tetrabutylammonium bromide was then added as a phase transfer agent.
A particularly preferred phase transfer agent is didecyldimethylammonium bromide.
Phase transfer agent.
An especially preferred phase transfer agent is tetrabutylammonium chloride.
A process of claim 1 further comprising a phase transfer agent.
A phase transfer agent is generally used to facilitate the reaction.
A suitable crown ether may be added as a phase transfer agent to accelerate the alkylation process.
The phase transfer agent is preferably a quaternary ammonium salt.
A source of ruthenium a source of molybdenum, and a phase transfer agent.
The phase transfer agent may be miscible or immiscible with the stream to be treated.
A process of claim 17 wherein said phase transfer agent is a quaternary ammonium halide.
It possesses three types of activities biocide, a cationic surfactant, phase transfer agent.
The need to use a phase transfer agent contributes significantly to the cost of operation.
A process of claim 1 or claim 2 carried out in the presence of a phase transfer agent.
See also
A solid / liquid phase transfer agent is preferentially used.
In a preferable embodiment, the reaction is carried out in the presence of a phase transfer agent.
Preferably, the phase transfer agent is present in a catalytic amount.
In preferable embodiments, the reaction is carried out in the presence of a phase transfer agent.
Also preferably, the phase transfer agent is tripropylene glycol monomethyl ether.
The catalyst system comprises a source of ruthenium, a source of molybdenum and a phase transfer agent.
Typically, the phase transfer agent is a polar solvent, with alcohols being particularly preferred.
The aqueous reaction medium may also contain a phase transfer agent and / or a surfactant.
Preferably, the phase transfer agent is selected from the group comprising quaternary ammonium salts.
Benzalkonium chloride may act as inter alia a biocide, a cationic surfactant and a phase transfer agent.
A process according to claim 4, wherein the phase transfer agent is methyl trioctyl ammonium sulphate.
Thus, preferred diluent compositions comprise both a non-polar solvent and a phase transfer agent.
However, it is preferred that the phase transfer agent forms part of the diluent composition.
In the presence of an organic solvent, a Lewis acid and optionally a phase transfer agent.
The process of claim 1 wherein the phase transfer agent is selected from polyethylene glycols.
The same reaction is carried out in a solvent mixture of DMF / toluene 1/1 without a phase transfer agent.
Preferably, the phase transfer agent is Bu4NBr.
Use of any of claims 9-11, wherein the diluent composition further comprises a phase transfer agent.
If it is non-polar, then a phase transfer agent is necessary.
The method of claim 10, wherein the phase transfer agent is an alcohol.
A process according to Claim 2 wherein the phase transfer agent in Step ( a ) ( 3 ) is methanol.
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