Examples of 'phosphine ligands' in a sentence
Meaning of "phosphine ligands"
phosphine ligands: These are compounds containing phosphorus atoms bound to various ligands. In chemistry, phosphine ligands play a crucial role in coordinating with metal atoms to form coordination complexes
How to use "phosphine ligands" in a sentence
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phosphine ligands
The resulting secondary phosphines are precursors to phosphine ligands.
Bidentate phosphine ligands are common in asymmetric reactions to enhance stereoselectivity.
Comparisons with related phosphine ligands.
Phosphine ligands can also be attached to various polymer supports.
Mixtures of suitable ionic phosphine ligands also can be employed.
The preferred catalysts are complexes of palladium with phosphine ligands.
Commonly employed phosphine ligands are trisubstituted phosphines such as triphenyl phosphine.
Many analogous complexes are known with different phosphine ligands.
Among a long list of such suitable phosphine ligands is included tricyclohexylphosphine.
Said phosphorus ligand may be selected from the phosphine ligands.
Phosphine ligands are commercially available or can be prepared by methods similar to known processes.
Other palladium catalysts and phosphine ligands may be useful.
This colourless viscous liquid is commonly used in the synthesis of phosphine ligands.
They correspond to phosphine ligands featuring a cationic charge in a position of the phosphorus atom.
In the following description reference will be made for convenience to phosphine ligands.
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Phosphine ligands are useful rate accelerants if they are not a component of the palladium catalyst.
The subject invention does not involve such aqueous systems or phosphine ligands.
The improvement over the use of monodentate phosphine ligands was a better selectivity to pentenoate ester.
Phosphine ligands with chiral centers on carbon and phosphorous atoms are known in the art.
This distortion was the result of interactions with the methyl groups of the phosphine ligands.
Chiral phosphine ligands can be generally classified as mono - or bidentate.
In some embodiments, a chiral phosphine ligands are used.
Numerous phosphine ligands are known, both monedentate and bidentate.
They are stronger pi-acceptors than typical phosphine ligands.
Multidentate phosphine ligands may, if desired, be present during the carbonylation reaction.
Examples of tertiary phosphine ligands are,.
Two or more phosphine ligands can be cojoined forming diphosphines, triphosphines, or polyphosphines.
In the above methods, carbene or phosphine ligands can be used.
Tertiary phosphine ligands are generally of two types, monodentate and bidentate ligands.
Alternatively, combinations of palladium with various phosphine ligands may be used.
Ferrocenyl-biphosphine ligands are bidentate tertiary phosphine ligands commonly used in palladium-catalyzed reactions.
Zerovalent organoplatinum complexes lacking phosphine ligands are often prepared via PtCl2COD.
Phosphine ligands are also π-acceptors.
The phosphine groups of the bidentate phosphine ligands are introduced by a phospha-adamantyl group.
The " palladium catalyst " can be used in combination with phosphine ligands.
Examples of such ligands include metallocene-based phosphine ligands having planar, phosphorus and carbon chirality.
It is most commonly substituted with phosphorus to provide mono-, bi-, and tridentate phosphine ligands.
The most common phosphine ligands are of the type PR3.
The phosphine-containing catalysts can be prepared by employing suitable phosphine ligands other than triphenyl phosphine.
Two or more phosphine ligands can be cojoined, forming diphosphines, triphosphines, or even higher polyphosphines.
Examples of such polymer-immobilized phosphine ligands have been reported in J. Am.
Figure 28 depicts certain Pd-catalyzed a-arylations of ketones conducted in the absence of phosphine ligands.
Knowles replaced the achiral triphenylphosphine ligands in Wilkinson 's catalyst with chiral phosphine ligands.
Suitable ligands are e.g. phosphine ligands.
Examples of monodentate phosphine ligands include tri-p-tolylphosphine, tri-p-methoxyphenyl phosphine, diphenylpentylphosphine and dimethylphenylphosphine.
In these examples, the phosphine ligands used have formulae III to V below,.
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Examples of using Ligands
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Imido ligands can be terminal or bridging ligands
Bipyridine and related ligands behave similarly
Such ligands are useful in the hydroformylation of alkenes
Examples of using Phosphine
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Phosphine is the most commonly used alternative
This may be especially a phosphine such as a triarylphosphine
Phosphine is mainly consumed as an intermediate in organophosphorus chemistry
