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Phosphinates
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- The reaction of h-phosphinates and
secondary phosphine oxides with amines and alcohols proceeds highly
stereo specifically to give the corresponding coupling products with
inversion of configuration at the phosphorus center under the
Atherton−Todd reaction conditions.
- This finding leads to the
establishment of a general and efficient method for the synthesis of
a variety of optically active organo phosphorus acid derivatives
from the easily available chiral h-phosphinates and secondary
phosphine oxides.
- Racemic acyl phosphinates and formyl
phosphinate hydrate were used directly as the substrates in a
proline derivative catalyzed cross aldol reaction with ketones.
- Because of the preexisting the
phosphorus stereogenic center, a mixture of two diastereomers of the
corresponding α-hydroxy phosphinates were obtained in this reaction.
- Good to high enantio
selectivities (up to 99% ee) were obtained
simultaneously for both of these two diastereomers in good yields.
- Good diastereo selectivities
were also obtained when the reaction generates an additional
carbon stereogenic center
α-Hydroxy phosphinic acid
- Derivatives, such as α-hydroxy
phosphinates, have been shown to be very important enzyme
inhibitors.
- Hydroxy phosphinate-derived peptides
have been used as the inhibitors of human immunodeficiency virus
(HIV) protease and renin.
- Also these compounds have found
use as GABA antagonists herbicides.
- With the exception of phosphinic
acids, the phosphoryl group in other phosphinic acid derivatives,
such as phosphinates, generally are chiral because the pentavalent
phosphorus atom has a tetrahedral structure.
- Enantiomers due to such phosphorus
chirality may have totally different biological activities
- One enantiomer was found
significantly more herbicidal than the other enantiomer or the
racemic mixture.
- This finding evinces the
importance of the phosphorus chirality in the biological activity of
the phosphinate compounds.
- Thus, developing an asymmetric
synthesis for α-hydroxy phoshinates that can fix both the stereo
chemistry of the α-hydroxy-substituted carbon and the phosphorus
stereogenic centers during the synthesis is very important.
- Such a method is expected to have the
potential of lowering production costs and use rates, reducing the
side effects, and lessening the environmental burden during the
manufacture and application of these materials.
- Besides the enzymatic resolution of
racemic hydroxy phosphinates and the synthesis starting with phosphonates or α-hydroxy phosphinates,
only a handful of chemical methods are available for the synthesis
of optically active hydroxy phosphinate
- Hydroxy phosphinates was developed on
the basis of a proline derivative-catalyzed asymmetric aldol
reaction of ketones and α-keto phosphinates or α-forms phosphinate
hydrate.
- Both the newly formed carbon
stereogenic centers and the phosphorus stereogenic center were fixed
during the aldol reaction.
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General
- Alkylation of h_phosphinate esters
under basic conditions
- Phosphinates
- Cyclic five-membered phosphinate
esters as transition state analogues for obtaining phosphohydrolase
antibodies
- Organophosphorus
- Organocatalytic enantio selective synthesis of
both diastereomers of α-hydroxy phosphinates
- Phosphinates, the flame retardants
for polymers in electronics
MSDS
- Calcium hypophosphite
- Cesium nitrate
- Calcium phosphinate (Calcium
hypophosphinate)
- Iodine
- Lead nitrate
- Multi-component mixture
- Potassium nitrate
- Sodium nitrate
Products
- Borane complexes of the H3PO2 P(III)
tautomer: useful phosphinate equivalents manufacturing process
- The mutagenic potential
4-fluorophenyl methyl (phenyl) phosphinate
- Sodium hypophosphite
- Product trends. trends on finland,2007. phosphinates (hypophosphites) and
phosphonates (phosphites)
Patent
- Synthesis of alkyl phosphinate salts
- Antiviral phosphonate analogs
- Dinucleoside phosphinates and their
pharaceutical composition
- Flame-retardant impact-modified
battery boxes based on polycarbonate
- Legand exchange thermo chromic systems
- Low molecular weight phosphinate and
phosphonate containing polymers
- Method for producing aluminium
phosphinates
- Poly(tantalum phosphinates)
- Polyphosphoric acid compositiuon
having a reduced viscosity
- Preparation of homoallyl alcohols
- Synthesis of alkyl phosphinates salt
and bis(alkyl)phosphinate salts
Synthesis
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Alpha-functionalized phosphonyl phosphinates: synthesis and
evaluation as transcarbamoylase inhibitors.
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Copper phosphates and phosphinates with pyridine/pyrazole alcohol
co-ligands
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The
synthesis and characterization of copper(II) phosphinate
coordination polymers
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Design, modelling, synthesis and biological evaluation of
peptidomimetic phosphinates
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Dinuclear and tetranuclear cages of oxodi phenylantimony
phosphinates
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Synthesis and evaluation of some novel phosphate and phosphinate
derivatives of area.
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Revisited synthesis of aryl-h-phosphinates
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Solid
supported synthesis of phosphinates via palladium (0) catalysed
coupling reactions.
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Synthesis and evaluation of a polyamine phosphinate and
phosphonamidate
Uses
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Enantioselective Synthesis
of Phosphinate Derivatives
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Ligand-Tetrahydrofuran
Coupling in Cheated Aluminum Phosphinates
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Sodium phosphinate uses
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Phosphinated Monomers from
Tartaric Acid and Benzoquinone.
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Sodium phenylphosphinate
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Suppliers
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- Suppliers of India
- Suppliers of another from India
- Suppliers of Germany
- Suppliers of Korea
- Suppliers of Korea
Raw
material suppliers
- Barium phosphinate basic information
- Ethyl (2,4,6-trimethylbenzoyl) phenyl
phosphinate
- Manganese hypophosphite hydrate
- (R)-1-phenylethanamine
(R)-(1-(((benzyloxy)carbonyl)amino)-2-methylpropyl)phosphinate
- Zinc phosphinate chemical
properties,usage,production
Company profiles
- Company from China
- Company another from China
- Company another from China
- Company another from China
- Company from India
- Company another from India
Market
- The 2007 import and export market for
phosphinates (hypophosphites), phosphonates (phosphites),
phosphates, and polyphosphates in australia
- The 2009 import and export market for
phosphinates
- The 2011 import and export market for
phosphinates
- Ammonium phosphinate (cas 7803-65-8)
market research report 2012
- Halogen-free polyamides and polyesters
for electronics egg 2008
- The world market for phosphinates
(hypophosphites) and phosphonates (phosphites)
- Sodium phosphinate (cas 7681-53-0)
market research report 2012
- The world market for phosphinates
(hypophosphites), phosphonates (phosphites), phosphates, and
polyphosphates: 2011 global trade perspective
Report
- Asymmetric hydrogenation of di and
trisubstituted enol phosphinates with n,p-ligated iridium complexes.
- Phosphinates flame retardants
- Phosphinates can provide fire
resistance in polyamides and polyesters
- Potassium phosphinate
- Sodium phosphinates
- Xian derfer co ltd
- ZincINC(II) and cobalt phosphinate
polymer with low-temperature flexibility
Study
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