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814-49-3Relevant articles and documents
The synthesis and reactions of dialkyl fluoroalkyl phosphates
Timperley, Christopher M.,Morton, Ian J.,Waters, Matthew J.,Yarwood, Jason L.
, p. 95 - 100 (1999)
Dimethyl and diethyl fluoroalkyl phosphates were prepared from (1) a dialkyl phosphite with a fluoroalcohol, triethylamine and carbon tetrachloride, (2) a dialkyl chlorophosphate with a fluoroalcohol and triethylamine, and (3) a dialkyl chlorophosphate with the sodium salt of a fluoroalcohol. Dimethyl and diethyl (2,2,2-trifluoroethyl) phosphates reacted with bromotrimethylsilane (TMSBr) in chloroform to give two products with loss of alkyl bromide. The major product was an alkyl (trifluoroethyl) trimethylsilyl phosphate, RO(TMSO)P(O)OCH2CF3 and the minor product was a bis(trimethylsilyl) trifluoroethyl phosphate, (TMSO)2P(O)OCH2CF3. The mechanism presumably involves initial attack of an alkoxy oxygen atom on the silicon atom of bromotrimethylsilane. Diethyl (2,2,2-trifluoroethyl) phosphate is resistant to chlorination. It did not react with oxalyl or thionyl chloride in chloroform under prolonged reflux. Unlike triethyl phosphate, it did not react with phosphorus oxychloride in chloroform under reflux.
Extraction of hexachloroplatinate from hydrochloric acid solutions with phosphorylated hexane-1,6-diyl polymers
Hahn, Simone,Holdt, Hans-Jürgen
, p. 878 - 888 (2012)
A series of diols (diethylene glycol, triethylene glycol, butane-1,4-diol and hexane-1,6-diol) were immobilized onto Merrifield resin and subsequently phosphorylated with dialkyl chlorophosphate (alkyl = Me, Et, Bu). The resins bearing hexane-1,6-diyl groups exhibited very good extraction abilities in regard to precious metal chloro complexes like platinum(IV), palladium(II) and rhodium(III). In batch experiments, more than 98% of Pt(IV) is extracted even when the metal and the hydrochloric acid concentration is enhanced significantly. Elution can be achieved with a solution of 0.5 mol L-1 thiourea in 0.1 mol L-1 hydrochloric acid. In the presence of other noble metals, platinum(IV) is preferentially bound. The extraction yield decreases in slightly acidic solution in the following order: Pt(IV) ≈ Pd(II) > Rh(III) and changes with increasing hydrochloric acid concentration to Pt(IV) > Pd(II) ? Rh(III). At different ratios of metal and acid, the temperature has nearly no influence on the platinum extraction. On slightly acidic media, the extraction of rhodium decreases by 30% when the temperature is increased from 10°C to 40°C. When the acid and metal concentration is enhanced, the palladium extraction decreases by 7-9%, depending on the resin.
Organophosphorus derivatives containing piperazine dithiosemicarbazones as chemotherapeutants against fungal pathogens of sugarcane
Chandra, Ruchi,Pandey,Sengupta
, p. 2181 - 2184 (2005)
Five novel organophosphorus derivatives have been synthesized by the reactions of O,O-diethylchlorophosphate with piperazine dithiosemicarbazones. The derivatives have been characterized on the basis of analyses and spectral (IR, 1H NMR) data. Fungicidal activities of these derivatives against Colletotrichum falcatum, Fusarium oxysporum, and Curvularia pallescence have been evaluated. The screening results have been correlated with the structural features of the tested compounds. Organophosphorus derivatives containing 1,4-bis(4-chlorobenzaldehyde)piperazine dithiosemicarbazone and 1,4-bis(4-methoxybenzaldehyde)piperazine dithiosemicarbazone proved to be more active than some prevalent commercial synthetic fungicides.
Tunable Redox Potential Photocatalyst: Aggregates of 2,3-Dicyanopyrazino Phenanthrene Derivatives for the Visible-Light-Induced α-Allylation of Amines
Bao, Ming,He, Min,Wang, Yi,Yu, Xiaoqiang
, p. 14720 - 14731 (2021/11/16)
This work highlights the tunable redox potential of 6,11-dibromo-2,3-dicyanopyrazinophenanthrene (DCPP3) aggregates, which can be formed through physical π-πstacking interactions with other DCPP3 monomers. Electrochemical and scanning electron microscopy showed that the reduction potential of [DCPP3]n aggregates could be increased by decreasing their size. The size of [DCPP3]n aggregates could be regulated by controlling the concentration of DCPP3 in an organic solvent. As such, a fundamental understanding of this tunable redox potential is essential for developing new materials for photocatalytic applications. The [DCPP3]n aggregates as a visible-light photocatalyst in combination with Pd catalysts in the visible-light-induced α-allylation of amines were used. This [DCPP3]n photocatalyst exhibits excellent photo- and electrochemical properties, including a remarkable visible-light absorption, long excited-state lifetime (16.6 μs), good triplet quantum yield (0.538), and high reduction potential (Ered([DCPP3]n/[DCPP3]n-) > -1.8 V vs SCE).
Ene-Yne Metathesis of Allylphosphonates and Allylphosphates: Synthesis of Phosphorus-Containing 1,3-Dienes
Rohde, Laurence N.,Wild, Thérèse H.,Diver, Steven T.
, p. 1371 - 1384 (2021/02/05)
A variety of ene-yne cross metathesis reactions were performed using unsaturated phosphonate and phosphate reagents, affording the corresponding phosphorylated 1,3-diene products in good to excellent yields. These difficult ene-yne metatheses employed a Grubbs catalyst bearing a cyclic amino alkyl carbene ligand. A variety of terminal alkynes of varying substitution underwent the reaction, and different phosphorus-containing alkenes were found to give the conjugated diene products in high yields. The resulting dienes were further transformed by Horner-type Wittig reactions and a Diels-Alder cycloaddition.
Quinoline derivatives, and preparation method and use thereof
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Paragraph 0232-0234, (2019/10/17)
The invention belongs to the technical field of insecticides and acaricides, and particularly relates to quinoline derivatives, and a preparation method and a use thereof, and concretely provides compounds represented by formula (I), and stereoisomers, racemates, tautomers, isotope labels, oxynitrides, pharmaceutically acceptable salts or solvates thereof. The compounds of the formula (I) have an excellent activity against various pests and pest mites in the agricultural field or other fields. The compounds can achieve an excellent control effect at a very low dosage, so the compounds can be used to prepare insecticides and/or acaricides. In addition, the preparation steps of the compounds of the invention are simple, and the product yield is high, so that the compounds have a good application prospect.
Phosphate ionic liquids as well as synthetic method and application thereof
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Paragraph 0027; 0028, (2018/05/16)
The invention discloses phosphate ionic liquids, a synthetic method thereof and an application as a lithium extraction agent. According to the method, the functional ionic liquids containing phosphamide groups are prepared from dibutyl phosphite, trichloroisocyanuric acid, N,N'-dimethylethanediamine and potassium hexafluorophosphate taken as raw materials through phosphoryl chlorination reaction,amidation with amine, salt forming reaction and exchange reaction. Compared with the prior art, the ionic liquids and the synthetic method thereof have the characteristics that operation is simple, industrial popularization and application are facilitated and the like, and have important application values.
Eco-Friendly and Industrially Scalable Synthesis of the Sex Pheromone of Lobesia botrana. Important Progress for the Eco-Protection of Vineyard
Cahiez, Gérard,Guerret, Olivier,Moyeux, Alban,Dufour, Samuel,Lefevre, Nicolas
supporting information, p. 1542 - 1546 (2017/10/25)
A one-pot synthesis of the pheromone of Lobesia botrana is described. The procedure allows an efficient and economical access to this product which is used for the protection of vineyards.
A single-step one pot synthesis of O,O′-dialkyl N,N-dialkylphosphoramidates from dialkylphosphites
Purohit, Ajay Kumar,Pardasani, Deepak,Kumar, Ajeet,Goud, D. Raghavender,Jain, Rajiv,Dubey
, p. 3754 - 3756 (2016/07/26)
An efficient synthetic method has been developed to obtain chemical weapons convention (CWC)-related O,O′-dialkyl-N,N-dialkylphosphoramidates from dialkylphosphites using inorganic reagents (CuCl2and Cs2CO3) at room temperature.
New benzotriazole-based reagents for the phosphonylation of various N-, O-, and S-nucleophiles
Panmand, Deepak S.,Tiwari, Anand D.,Panda, Siva S.,Monbaliu, Jean-Christophe M.,Beagle, Lucas K.,Asiri, Abdullah M.,Stevens, Christian V.,Steel, Peter J.,Hall, C. Dennis,Katritzky, Alan R.
supporting information, p. 5898 - 5901 (2015/01/08)
Benzotriazole surrogates showing higher stabilities than the corresponding chlorophosphates, allow phosphonylation of a variety of N-, O-, and S-nucleophiles in good yields.