Examples of 'transfer catalyst' in a sentence
Meaning of "transfer catalyst"
transfer catalyst: This phrase could refer to a substance or agent that facilitates the process of transferring something from one state or place to another
How to use "transfer catalyst" in a sentence
Basic
Advanced
transfer catalyst
A phase transfer catalyst can be employed herein.
There is also employed a phase transfer catalyst.
The phase transfer catalyst is used in catalytic amounts.
It is also frequently advantageous to employ a phase transfer catalyst.
Advantageously a phase transfer catalyst is also added.
The reaction is advantageously catalyzed by a conventional phase transfer catalyst.
The presence of the phase transfer catalyst is critical.
Tetrabutylammonium bromide is generally the preferred phase transfer catalyst.
A preferred proton transfer catalyst is didodecylbenzene sulfonic acid.
The reaction is conducted in the presence of a phase transfer catalyst.
A phase transfer catalyst may be used.
Also present in the reaction mixture is a phase transfer catalyst.
The phase transfer catalyst can be ionic or neutral.
The reaction is performed in the presence of a phase transfer catalyst.
It is also used as a phase transfer catalyst and as a mild base.
See also
Preferably the process is performed using a phase transfer catalyst.
In one embodiment the phase transfer catalyst is tetrabutylammonium bromide.
The reactions can be run without a phase transfer catalyst.
The amount of phase transfer catalyst can vary widely.
Phase transfer catalyst and heteropolytungstate are preferably fed separately in step a.
It is preferable to add a phase transfer catalyst to the methylation reaction.
A phase transfer catalyst such as a tetraalkylammonium halide salt is preferably included.
The efficiency of the reaction is improved by inclusion of a phase transfer catalyst.
Phase transfer catalyst recovery.
The reaction is carried out in the presence of a phase transfer catalyst.
The preferred phase transfer catalyst used was tetraethylammonium chloride.
A quaternary ammonium salt may be used as the phase transfer catalyst.
The preferred phase transfer catalyst is benzyltriethyl ammonium chloride.
Inorganic bases are preferably used in the presence of a phase transfer catalyst.
Suitably the phase transfer catalyst is a quaternary salt or a crown ether.
Embodiments of this aspect may include using a phase transfer catalyst.
The phase transfer catalyst facilitates the reaction of these dissimilar components.
The fluorination reaction may be conducted in the presence of a phase transfer catalyst.
Any phase transfer catalyst known to one skilled in the art is suitable.
Inorganic bases can be used alone or in the presence of a phase transfer catalyst.
It is also possible to use a phase transfer catalyst such as tetrabutyl ammonium bromide.
A phase transfer catalyst such as tetrabutylammonium chloride may be added but is not essential.
Addition of tetrabutylammonium bromide as a phase transfer catalyst dramatically increases the rate of reaction.
The phase transfer catalyst can be selected from a wide range of known compounds.
The oxindole can be converted to an enantiomeric mixture using an achiral phase transfer catalyst.
As the phase transfer catalyst may be used an ordinary quaternary ammonium salt.
The reaction product has to be purified by recrystallisation to eliminate the phase transfer catalyst.
A metallic chain transfer catalyst may be added continuously or discretely to the reaction zone.
The process may further comprise adding at least one phase transfer catalyst.
More preferably the phase transfer catalyst is a quaternary ammonium salt or a crown ether.
This reaction mixture can further comprise a quaternary ammonium phase transfer catalyst.
In this case a phase transfer catalyst was used to increase the speed of the reaction.
The fluorination reaction is conveniently and preferably conducted in the presence of a phase transfer catalyst.
The phase transfer catalyst preferably is introduced to the reaction at the inception thereof.
Preferably the quaternary ammonium salt is a phase transfer catalyst and especially benzyl triethylammonium azide.
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