Examples of 'phosphines' in a sentence
Meaning of "phosphines"
phosphine (noun) - This phrase refers to a chemical compound consisting of phosphorus and hydrogen, often used in organic synthesis or as a fumigant
Show more definitions
- plural of phosphine
How to use "phosphines" in a sentence
Basic
Advanced
phosphines
Primary phosphines are typically prepared by alkylation of phosphine.
Examples of such phosphorus compounds are aromatic phosphines.
Phosphines may also be added as a phosphonium salt.
Lewis base can also comprise phosphines.
The phosphines include substituted or unsubstituted phosphines.
Special attention is drawn to organic phosphines.
The resulting secondary phosphines are precursors to phosphine ligands.
Especially suitable activators are organic amines and phosphines.
Basic phosphines and bidentate phosphines are particularly preferred.
The chiral ligands may preferably be chiral phosphines.
These phosphines are accordingly believed to be novel.
Said method comprises sulfonation of phosphines using oleum.
Such phosphines are termed aliphatic tertiary monophosphines herein.
A widely used class of ligands for these purposes are phosphines.
The ligands may be phosphines or halides amongst others.
See also
Phosphines can be added to salts which do not contain phosphines.
Borane adducts with phosphines and amines are also available.
Phosphines are added to them.
The highly functionalized phosphines contain hydroxy or polyhydroxy functionalities.
Due to oxygen or sulphur atom abstraction by the phosphines of tetrofosmin.
Secondary phosphines are prepared analogously to the primary phosphines.
Commonly used ligands are phosphines.
Preferred phosphines include triarylphosphines.
Commonly employed phosphine ligands are trisubstituted phosphines such as triphenyl phosphine.
Examples of phosphines include triphenylphosphine.
Syntheses of cyclovinyl phosphines.
Phosphines of a more specialized nature are usually prepared by other routes.
Ligand components may be phosphines with at least one alkyl substituent.
The phosphines were introduced into the catalyst by a variety of different methods.
As ligand both monodentate phosphines and bidentate diphosphines may be used.
Suitable catalysts include secondary and tertiary amines and phosphines.
Typically useful phosphines used are triphenyl phosphine and triethyl phosphine.
Preferably the phosphine ligand is selected from aryl phosphines or cycloalkane phosphines.
Several new chiral phosphines are developed for asymmetric catalytic reactions.
A similar method may be used for other aryl and alkyl phosphines.
Preferred examples of phosphines and phosphoramides include triphenylphosphine and hexamethylphosphoramide.
Sodium amalgam or more specialized reagents such as phosphines or phosphorothioates can be used.
Bases and phosphines may be included as additives in the reaction if desired.
The degree of oligomerization is controlled by the amount of the tertiary organic phosphines.
The tertiary organic phosphines may be added all in once or in portions or continuously.
Other ligands useful in the above reaction include triphenylphoshine or trialkyl phosphines.
The invention relates to fluorous phosphines and a process for their preparation.
Tertiary phosphines are commonly prepared through reduction of the corresponding phosphine oxides.
Examples of azide group reducing agents include phosphines and aqueous ammonia.
Phosphines having an aromatic substituent containing an imino nitrogen atom are known compounds.
This compound may further react with phosphines to give phosphine complexes of palladium.
The catalysts used in industrial processes are generally homogenic rhodium or cobalt carbonyls or phosphines.
Methods for adding phosphines to olefins under free radical conditions are known.
Desulfurization of the episulfide can be accomplished by many phosphines and also by copper powder.
The tertiary phosphines may be used alone or in combination of two or more thereof.
