Dimethyl ethylphosphonate

Dipropyl ethylphosphonate Dimethyl morpholino-phosphoramidate Ethylbis[2-... 

Capillary Electrophoresis Chemical Warfare Agents Chemical Weapons Convention Deuterated L-Alanine Triglycine Sulfate Dimethyl Ethylphosphonate Dimethyl Isopropylphosphonate Dimethyl Methylphosphonate Dimethyl Propylphosphonate Dimercaptotoluene Diffuse Reflectance Infrared Fourier Transform Functional Group Chromatograms Flame-Ionization Detector Fourier Transform Infrared Spectroscopy Gas Chromatography Gas Chromatography/Chemical Ionization/Mass Spectrometry Gas Chromatography/Chemical Ionization/Tandem Mass Spectrometry... 

It has been reported that the geometry of olefins obtained from the reaction of dialkyl l-(ethoxycarbonyl)ethylphosphonates and a-phenylpropionaldehyde can be controlled by choice of the phosphonate ester alkyl groups diisopropyl ester gives (E), while dimethyl ester gives (Z). This has now been confirmed for the... 

Methyl-2-pentyl methylphosphonofluoridate Dimethyl ethylphosphonate Butyl ethylphosphonofluoridate 6163-76-3 18358-34-4 1067.2 1210.0... 

Figure 8. LC/MS mass chromatograms, positive APCI showing the detection of four isomeric alkyl alkylphosphonic acids (1 Hg/ml) and two dialkylalkyl phosphonates (10 p,g/ml) (upper), negative APCI showing selective detection of the phosphonic acids, a. i-PrMPA and EEPA (unresolved), b. methyl n-PrPA, c. n-PrMPA, d. ethyl methyl methylphosphonate, and e. dimethyl ethylphosphonate (lower)...

Figure 13. TIC chromatogram of a water extract of a proficiency test soil sample showing the detection of 6. TDGO (from degradation of TDG), 5. ethyl MPA, 8. 1,5-bis(2-hydroxyethylsulfinyl)pentane (13), 4. dimethyl ethylphosphonate (additional intense peak is trimethyl phosphate)...

Figure 6. An example of a library search. An unknown chemical was searched against a library containing chemicals related to the CWC. The first hit, dimethyl ethylphosphonate was clearly the best candidate and matches the unknown. The search algorithm was a square derivative and the maximum HQI value is 999. (Source M. Sbderstrom, unpubhshed...

Octahedral and tetrahedral solvates (A1S )(C104)3 [n = 4,6 S = trimethyl phosphate (TMPA), hexamethylphosphorotriamide (HMPT), triethyl phosphate (TEPA), dimethyl methylphosphonate (DMMP), diethyl ethylphosphonate (DEEP), and dimethyl hydrogen phosphite (DMHP)] are shown by Al NMR to have tetrahedral and octahedral structures which are retained in nitromethane solution. 

Griffin, C.E., and Ranieri, R.L., Acid-catalyzed rearrangements of dimethyl a,P,P-triaryl-a,P-epoxy-ethylphosphonates. Phosphorus, 6, 161, 1976. 

The synthetic potential of singlet oxygen may be used to effect the conversion of dimethyl 1-(nitromethyl)alkyIphosphonates into dimethyl 1-formylalkylphosphonates. Thus, treatment of a Rose Bengal-sensitized solution of dimethyl l-(nitromethyl)ethylphosphonate and MeONa in MeOH with singlet oxygen affords dimethyl 1-formylethyIphosphonate in 80% yield. A temperature dependence of the yield has been observed. For the reaction with dimethyl l-(nitromethyl)eth-ylphosphonate in MeOH at 10°C, 0°C, and -78°C, the conversions are 50%, 60%, and 100%, respectively. The higher yield at low temperature may reflect increased stability of the intermediate... 

The dimethyl 2-methoxycarbonyl-2-(methoxyimino)ethylphosphonate used in the Homer-Wadsworth-Emmons reaction as an amino acid synthon is prepared by masking the carbonyl group of methyl bromopymvate with methoxyamine hydrochloride before submission to a Michaelis-Arbuzov reaction with trimethyl phosphite (Scheme 8.37).5 "5 By contrast, unprotected 3-benzoyl-... 

The reactive 1 1 intermediate formed in the initial reaction between trialkyl phosphite and dialkyl acetylenedicarboxylates can be trapped. Thns, reaction of dialkyl acetylenedicarboxylates with trimethyl phosphite in the presence of indane-1,3-dione leads to dimethyl 2-(3-methoxy-l-oxoindenyl)-l,2-fczXalkoxycarbonyl)ethylphosphonate in high yields. Treatment of trialkyl phosphites with Cgo and dimethyl acetylenedicarboxylate at 80°C give fullerenecyclopropyl phosphite ylides, which, on hydrolysis at ambient temperature, give the corresponding phosphonates. ... 

Diethyl N,N-Dimethylphosphoramidate Diethyl Phosphite [CAS 762-04-9] Diethylaminoethanol [CAS 100-37-8] Diisopropylamine [CAS 100-18-9] Dimethyl Ethylphosphonate [CAS 6163-75-3]... 

Another attractive feature of the phosphonamide route is that it can be controlled to give cis- and trans-olefins.4 Formation of the adduct is not stereospecific, but the elimination reaction is stereospecific (cis cycloelimination). The synthesis of cis- and trans-1 -phenylpropene is illustrative the former was prepared from the reaction of benzaldehyde with the a-lithio derivative of ethylphosphonic acid bis(dimethyl-amide) to give two diastereoisomeric /3-hydroxyphosphonamides (5) in the ratio of 3.5 1. The major isomer was separated by crystallization and on pyrolysis gave cis-1 -phenylpropene. The isomeric olefin was prepared by reaction of the a-lithio... 

Several studies have employed Escherichia coli, some strains of which appear to be particularly active in their ability to cause P—C bond fission, and through the use of one of these, a metabolite from ethylphosphonic acid was shown to be a-l-(ethylhydroxyphos-phinoyl)ribose (aminomethyl)phosphonic acid and its 7V-methyl, 7V,A -dimethyl and N-acetyl derivatives are converted into A -methylacetamide, A, A -dimethylacetamide, trimethylamine and 7V-methylacetamide, respectively. ... 

Methyl phosphorodichloridite Dimethyl phosphorochloridite Trimethyl phosphite Trimethyl phosphorotrithioite Hexamethylphosphorous triamide Methyl tetramethylphosphorodiamidite Dimethyl dimethylphosphoramidite Methyl diethylphosphoramidochloridite 0-Methyl S.S-diethyl phosphorodithioite Ethylphosphonous acid Ethylphosphonous dichloride Methyl ethylphosphonochloridite Dimethyl ethylphosphonite 0-Methyl S-phenyl ethylphosphonothioite Dibutyl phosphonite ... 

N -butylphosphonic acid, phenylphosphonic acid, ethyl methylphosphonic acid, ethyl methylthiophosphonic acid, isopropyl methylphosphonic acid, pinacolyl methylphosphonic acid, dimethyl phenylphosphonate in 16 min Methylphosphonic acid, ethylphosphonic acid, CZE... 

Cellulose phosphonate has been treated with AW-dimethylacrylamide or 4-vinylpyridine in the presence of sodium ethoxide to yield cellulose 2- NN-dimethyl)carbamoyl-ethylphosphonate or cellulose 2-pyridinylethylphosphonate, respectively. Cellulose phosphonate fabrics modified with AW-dimethyl-acrylamide had powerful flame-retardant properties, suggesting that the combination of phosphoryl and amide groups was an effective flame retardant. 

FIGURE 11.6 Plot of alpha values for protonated monomers of organophosphate compounds obtained at two fields of 80 (bottom) and 140 (top) Td as a function of moisture. DMMP, dimethyl-methylphosphonate TMP, trimethyl-phosphate DEMP, diethyl-methyl-phosphonate DEEP, diethyl-ethylphosphonate DIMP, di-iso-prophyl-methylphosphonate DEIP, diethyl-iso-prophylphosphonate TEP, triethyl phosphate TPP, tripropyl phosphate DBBP, dibutyl-butylphosphonate TBP, tri-n-butylphosphate. (From Krylova et al., Effect of moisture on high field dependence of mobility for gas phase ions at atmospheric pressure organophosphorus compounds, J. Phys. Chem. 2003. With permission.)... 

Some organic phosphates have been made so selective that they may be taken by mouth. Thus, trichlorofon (13.31) is given orally (as a single dose) to cattle to protect them against the hide-piercing warble fly. This substance, known as metrifonate when used medicinally, is dimethyl 2,2,2-trichloro-l-hydroxy-ethylphosphonate. It is a pro-drug, for it is dehydrated and isomerized to dichlorvos (13.29), in the body. 

Bis (tridecafluorooctyl) trimethylsiloxane Cyanopropylmethylsiloxane Decyl alcohol Dibutyl butyl phosphonate Diethyl ethylphosphonate Dimethicone Dimethicone copolyol Dimethiconol 2,6-Dimethyl heptanol-4 Dimethyl hexynediol Dioctyl octylphosphonate Erucic acid ... 

Behenalkonium chloride Butyl oleate Capryl hydroxyethyl imidazoline Cocamidopropylamine oxide Coco-betaine Cocodimethylammonium-3-sulfopropyl betaine Cocoyl hydroxyethyl imidazoline Cl3-15 pareth-2 Cl 3-15 pareth-3 Cl 3-15 pareth-7 C13-15 pareth-11 Dialkyl dimethyl ammonium chloride Dibehenyl/diarachidyl dimonium chloride Dibehenyidimonium chloride Dicetyidimonium chloride Diethyl ethylphosphonate Di (2-ethylhexyl) phosphate Dimethicone copolyol ... 

This technique was thus applied by Iftene et al. for the synthesis of dimethyl 2-(vinylo>q )ethylphosphonate monomers (Scheme 3.9). Prior to the transetherification of the vinyl ether, a series of phosphonate-containing hydroxyl... 

S3mthesis of dimethyl 2-(vinylo)y)ethylphosphonate by transetherification catal) ed by a palladium salt. 

Finally, the same authors investigated the radical copolymerization of a dimethyl 2-(vinylo gr)ethylphosphonate with a range of electron-accepting monomers (Scheme 3.10). 

Figure 3.2 Molecular weight distribution of copolymers obtained from radical copolymerization of dimethyl 2-(vinylo5y)ethylphosphonate (VEC2PMe) with a series of electron-accepting monomers.

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