Examples of 'tetrakis' in a sentence
Meaning of "tetrakis"
tetrakis (noun) - a term used in chemistry to indicate the presence of four identical groups or ligands around a central atom
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- Having four identical units
How to use "tetrakis" in a sentence
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tetrakis
Tetrakis triphenylphosphine palladium.
Suitable palladium catalysts include palladium tetrakis triphenylphosphine and the like.
Palladium tetrakis triphenyl phosphine was used as the catalyst in the coupling reaction.
A preferred reactant is triphenylcarbenium tetrakis ( pentafluorophenyl ) boronate.
The use of a tetrakis triphenylphosphine palladium catalyst in the present reaction is a preferred catalyst.
The ionic ionizing compound is triphenylcarbenium tetrakis ( pentafluorophenyl ) boronate.
The producing process of the tetrakis ( fluoroaryl ) borate derivative of the present invention uses a reaction solvent.
A specific example of such compounds is pentaerythrityl tetrakis ( dimethylene glycol acrylate ).
Borax Tetrakis hydroximethyl phosphonium salts such as chloride ( THCP ) or ammonium THPX.
Most preferred activators of this type are trialkylammonium tetrakis ( pentafluorophenyl ) borates.
The use of a water soluble tetrakis ( hydroxymethyl ) phosphonium salt as a mass killer.
The present invention relates to a process for preparing tetrakis ( fluoroaryl ) borate.
Examples include pentaerythritol tetrakis mecaptopropionate, trimethylolpropane tris thioglycolate.
Examples of suitable thiols are cysteine, methylolpropane tris mercapto acetate and pentaerythritol tetrakis mercapto propionate.
Note that a producing process of tetrakis ( fluoroaryl ) borate is not limited to the above disclosure.
See also
Composition according to claim 1 wherein the hydroxyalkylphosphine compound is a water soluble tetrakis ( hydroxymethyl ) phosphonium salt.
Particularly preferred are tetrakis ( hydroxymethyl ) phosphonium chloride, sulphate, bromide and phosphate.
To use the apparatus the cellulosic fabric is first impregnated with a tetrakis ( hydroxyorgano ) phosphonium composition.
The product, a tetrakis ( 4-benzoylbenzyl ether ) of pentaerythritol can then be purified by preparative chromatography.
An example of a silicate resin is tetrakis ( trimethylsiloxy ) silicate.
Reference example 6 Other stabilizers ( antioxidants ) were evaluated in a similar manner as the Pentaerythitol Tetrakis.
Using triphenyl carbenium tetrakis ( pentafluorophenyl ) boronate.
The vertex-first perspective projection of the 24-cell into 3-dimensional space has a tetrakis hexahedral envelope.
Thus, there arises a problem that the tetrakis ( pentafluorophenyl ) borate derivative can not be produced efficiently.
To this solution is added about 0.1 molar equivalent of palladium tetrakis triphenylphosphine.
The Aloc group was removed using tetrakis ( triphenylphosphine ) palladium ( O ) and tributylninhydride.
A catalyst system according to claim 12 wherein the activator is a trialkylammonium tetrakis ( pentafluorophenyl ) borate.
Consequently, a highly-pure colorless tetrakis ( fluoroaryl ) borate · ether complex can be obtained.
Tetrakis ( 2-chloroethyl ) ethylene diphosphate flame retardant, made by Olin Corporation.
A preferred reactant is tripheylcarbenium tetrakis ( pentafluorphenyl ) boronate.
N, N-dimethylanilinium tetrakis ( pentafluorophenyl ) boron ( 30 mg ) was heated in toluene to produce a homogeneous solution.
In certain embodiments, the coupling reagent comprises tetrakis ( triphenylphosphine ) palladium.
Pentaerythritol tetrakis ( 3-mercapto propionate ), a thiol compound commercially available from Aldrich ;.
The membrane can also contain potassium tetrakis ( p - chlorophenyl ) borate.
Bisacylphosphine oxide ; PT3MP pentaerythritol tetrakis ( 3-mercapto propionate ), a thiol compound commercially available from Aldrich ;.
The most preferred thiol-functional compound is pentaerythritol tetrakis ( 3-mercaptopropionate ).
Preferably, the THP salt is tetrakis ( hydroxymethyl ) phosphonium sulphate ( THPS ).
The most preferred thiol-functional compound is pentaerythritol tetrakis ( 3-mercapto propionate ).
The chemical name is Tetradodecylammonium tetrakis ( 4-chlorophenyl ) borate, purchased from Fluka Chemika Biochemika, Ronkonkoma, NY.
In a particularly preferred embodiment, the alkyl-substituted phosphonium compound is tetrakis ( hydroxymethyl ) phosphonium sulphate ( THPS ).
According to the above process, inexpensive and highly-pure tetrakis ( fluoroaryl ) borate can be produced efficiently.
It is also possible to directly use a zero-valent palladium reagent such as tetrakis ( triphenylphosphine ) palladium ( 0 ).
The use according to claim 1 of a water-soluble tetrakis ( hydroxymethyl ) phosphonium salt.
Impregnating said substrate with an aqueous solution of a tetrakis ( hydroxyorgano ) phosphonium compound ;.
Use according to Claim 1, characterised in that the THP salt is tetrakis ( hydroxymethyl ) phosphonium sulphate.
Any porphyrin, chlorin or bacteriochlorin-based drug, especially tetrakis ( hydroxy phenyl ) derivatives thereof ;.
Suitable sources of Pd ( 0 ) include but are not limited to tetrakis triphenylphosphine palladium ( 0 ).
Such hydroxymethyl phosphonium compounds include tris hydroxymethyl phosphonium ( " THP " ) and tetrakis hydroxymethyl phosphonium hydroxide ( " THPOH " ).
Preparation of the catalyst dichloro tetrakis 4-methoxy phenatel of tungsten ( A ).
