267 results about "Phosphine oxide" patented technology

The invention discloses an aluminum substrate UV matt finish paint and a preparation process thereof, and relates to the technical field of paints.The aluminum substrate UV matt finish paint is prepared from, by mass, 10%-20% of modified polyurethane acrylate, 25%-32% of high-functionality aliphatic polyurethane acrylate, 18%-30% of special modified epoxy acrylate resin, 0.5%-2% of dispersing agent, 0.1%-0.5% of defoaming agent, 1%-3% of anti-settling powder and the balance water. The paint is prepared from the following components in percentage by weight: 10 to 15 percent of magnesium silicate mineral, 1 to 10 percent of matting powder, 0.2 to 1 percent of 1-hydroxycyclohexyl phenyl ketone, 0.5 to 3 percent of trimethylbenzoyl-diphenyl phosphine oxide, 1 to 3 percent of acrylate flatting agent, 0.2 to 1.2 percent of polyurea modified polyurethane rheological agent and 5 to 15 percent of trimethylolpropane triacrylate. According to the UV matte finishing paint disclosed by the invention, through compounding of ternary resin and enhancement of nano silicon dioxide, a rigid and tough cross-linked network is constructed, a paint film is free of cracks when being bent at 180 degrees, the adhesive force reaches grade 0, and a coating is resistant to acid and alkali etching liquid and free of corrosion by cooperating with a silane coupling agent and a light stabilization system, and the color difference is delta Elt after the UV matte finishing paint is subjected to high temperature of 260 DEG C; and 1.5, the anti-yellowing performance is excellent.

The invention provides a method for preparing high-purity hafnium tetrachloride by wet extraction and separation, which comprises the following steps: stirring and leaching hafnium alloy waste serving as a raw material by using HNO3 and HF mixed acid, then adding thioacetamide, adjusting the pH value to 4-5, stirring and filtering; compounding tributyl phosphate, trioctylphosphine oxide and sulfonated kerosene to obtain a composite extracting agent, and stirring and mixing to form a homogeneous organic phase; in a hydrochloric acid medium, controlling the volume ratio of an organic phase to a water phase to be (2.5-3.5): 1, carrying out three-stage counter-current extraction, and standing for phase splitting; the extracted organic phase passes through an adsorption column filled with iminodiacetic acid modified silica gel; and carrying out reverse extraction by using a hydrochloric acid solution, and then carrying out reduced pressure evaporation concentration, cooling crystallization and dehydration to obtain hafnium tetrachloride. According to the method, the zirconium and hafnium separation efficiency in the hafnium tetrachloride preparation process is improved, and the problem that the content of zirconium and hafnium impurities in the product is too high is solved.

The invention belongs to the technical field of UV visbreaking polymers, and particularly relates to a UV visbreaking film and a preparation method thereof. Wherein the UV viscosity-reducing film sequentially comprises a base film (1), a first viscosity-reducing adhesive layer (5), a second viscosity-reducing adhesive layer (4) and a release film (3) from bottom to top, the first viscosity-reducing adhesive layer (5) and the second viscosity-reducing adhesive layer (4) both comprise a photoinitiator, the photoinitiator in the first viscosity-reducing adhesive layer (5) is 1-hydroxy-cyclohexyl phenyl ketone, and the content of the photoinitiator in the formula of the adhesive layer is 0.1%-10% by mass; a photoinitiator in the second viscosity-reducing adhesive layer (4) is bis (2, 4, 6-trimethylbenzoyl) phenyl phosphine oxide, and the content of the photoinitiator in the adhesive layer formula is 0.1-10% by mass; in the preparation method, ultraviolet irradiation precuring is carried out, so that the UV viscosity-reducing film has light selectivity and high cohesion strength, and the residual adhesive is remarkably reduced.

The invention discloses a hyperbranched flame retardant as well as a preparation method and application thereof. The flame retardant is prepared by the following steps: dehydrating and pre-polymerizing a boron-containing component (such as tetrahydroxy diborane) and dihydric alcohol (such as 1, 3-propylene glycol), and condensing with trihydroxymethyl phosphine oxide. 4 parts of the flame retardant is added into epoxy resin, phosphorus-containing free radicals can be released in a gas phase for quenching and smoke suppression, a compact boron-containing expanded carbon layer is formed in a condensed phase, and synergistic flame retardance is achieved. The hyperbranched structure can be embedded into an epoxy network, synchronous reinforcement and toughening are achieved, the impact strength is improved by 123.5%, and the tensile strength is improved by 47.7%. The flame retardant has efficient flame retardance (the limit oxygen index is 33.9%, UL-94V-0 level), high transparency and excellent mechanical properties, and is suitable for epoxy resin composite materials in the fields of electronic packaging, aerospace and the like.

The application discloses a kind of rapamycin 40-position hydroxyl alkyl synthesis method, belong to the technical field of drug synthesis.The method is: in inert gas atmosphere, rapamycin is sequentially added into microwave reaction tube, molecular sieve and additive, additive is triphenyl phosphine oxide, tri (4-fluorophenyl) phosphine oxide, tri (4-methoxyphenyl) phosphine oxide, tricyclohexyl phosphine oxide, triphenyl phosphine sulfide, triphenyl phosphine selenide or hexamethylphosphorus triamide;Subsequently, alkylating agent, base and organic solvent are added, sealed, reacted in microwave reaction instrument, cooled, filtered, washed, dried, filtered, purified, to obtain the alkylated product of rapamycin 40-position hydroxyl group.The method compared with the existing rapamycin 40-position hydroxyl group alkyl modification method, simple operation, low cost, short reaction time, less impurities, easy separation, higher yield, up to 79.1%, suitable for industrial production, can provide new ideas for synthesis and development of rapamycin derivatives such as everolimus.

A UV curable inkjet ink including a free radical polymerizable compound and an acyl phosphine oxide initiator wherein the acyl phosphine oxide initiator includes an acyl group selected from the group consisting of a benzoyl group substituted by an urea group or an oxalylamide group; a 2,6-dimethyl benzoyl group substituted in position 3 by an urea group or an oxalylamide group; a 2,6-dimethoxy benzoyl group substituted in position 3 by an urea group or an oxalylamide group; a 2,4,6-trimethyl benzoyl group substituted in position 3 by an urea group or an oxalylamide group; and a 2,4,6-trimethoxybenzoyl group substituted in position 3 by an urea group or an oxalylamide group wherein the urea group and the oxalylamide group include a tertiary amine group positioning a phosphorus atom of the acylphosphine oxide initiator in a 1 to Z position, where position 1 is defined as that of the phosphorus atom and position Z is defined as the nitrogen atom of the tertiary amine group with Z representing an integer of at least 11; and that the acyl phosphine oxide initiator contains no more than two photoinitiating moieties having a phosphine oxide group.

The invention belongs to the technical field of UV ink formula design and digital printing application, and particularly relates to scratch-resistant UV ink, a preparation method thereof and application of the scratch-resistant UV ink to digital printing. The scratch-resistant UV ink comprises the following raw materials in parts by weight: 15-25 parts of epoxy acrylate; 10 to 20 parts of polyurethane acrylate; 15 to 25 parts of a bifunctional monomer; 5-10 parts of a monomer with three functional groups and more than three functional groups; 3 to 5 parts of an alpha-hydroxy ketone photoinitiator; 2 to 4 parts of an acyl phosphorus oxide photoinitiator; 2 to 5 parts of organically modified nano silicon dioxide; 0.1 part to 0.5 part of a flatting agent; 0.5 to 1.5 parts of a dispersing agent; 10 to 15 parts of pigment; the bifunctional monomer is tripropylene glycol diacrylate; the monomer with three functional groups and more than three functional groups is trimethylolpropane triacrylate. The ink has pencil hardness greater than or equal to 3H and excellent flexibility, the adhesive force on substrates such as PC, PET, metal and the like reaches 0 level, the printing process is simplified, and the ink is suitable for digital printing in various scenes.

The invention discloses a lithium dihydrogen phosphate preparation method, which comprises: S1, mixing a refined lithium sulfate solution with an extraction agent solution, and carrying out standing layering to obtain an upper layer solution; s2, mixing the upper-layer solution with a detergent, washing, and separating to obtain a washing solution; s3, mixing the washing liquid with a phosphoric acid solution, and standing for layering to obtain a lower-layer solution; s4, mixing the lower-layer solution with a component regulator; and carrying out solid-liquid separation. An extracting agent in the extracting agent solution comprises at least one of benzoyl trifluoroacetone, trialkyl phosphine oxide and sulfonated calixarene. The specific extraction agent efficiently selects lithium ions to separate impurities, lithium dihydrogen phosphate is obtained through direct reverse extraction after washing, lithium dihydrogen phosphate does not need to be converted into other lithium products to prepare lithium dihydrogen phosphate, and the process production period is shortened. In addition, lithium dihydrogen phosphate is prepared through washing and reverse extraction after impurities are efficiently selected and separated through an extraction agent; the purity is high; the battery grade lithium dihydrogen phosphate can be obtained.

The invention discloses a preparation method of 3, 6-dichloropyridazine, and belongs to the technical field of chemistry. According to the method, 3, 6-dihydroxypyridazine is used as a raw material, an organic solvent and triphenylphosphine oxide are combined to form a dichlorotriphenylphosphine intermediate state which is used as a chlorinating agent, dihydroxyl is substituted to generate 3, 6-dichloropyridazine, triphenylphosphine oxide and solid light are used as raw materials, heating reaction is performed to prepare 3, 6-dichloropyridazine, meanwhile, a one-pot method can be adopted in the two-step reaction, and operation is easy and convenient. The novel preparation method for synthesizing 3, 6-dichloropyridazine provided by the invention has the advantages of low raw material cost, high yield, high gas phase purity and no pollution, is suitable for industrial production, can meet industrial requirements, provides a new idea for later preparation of 3, 6-dichloropyridazine, has the remarkable advantages of high gas phase purity and high yield, and is suitable for industrial production. Wide application prospects are realized.

The invention discloses a synthesis method of a novel benzosuberone compound, and belongs to the field of organic synthesis. The preparation method comprises the following steps: uniformly stirring methyltriphenylphosphonium bromide in a solvent at room temperature, dropwise adding an n-hexane solution of n-butyllithium in an ice-water bath, stirring a reaction system at room temperature for 30-40 minutes after dropwise adding is completed, then adding an initial raw material phenanthrenequinone 1 in the ice-water bath, transferring the reaction system to 40 DEG C for reaction, and after the reaction is monitored to be complete by a TLC (Thin Layer Chromatography) dot plate, filtering, washing and drying to obtain the phenanthrenequinone 1. And pouring the reaction liquid into a silica gel chromatographic column, and simply filtering by using dichloromethane as an eluent to remove salt and phosphine oxide. And performing rotary evaporation to remove the organic solvent to obtain a crude product, and separating and purifying to obtain a target product 2. The method is short in reaction time and low in reaction cost, provides a practical method for obtaining the seven-membered rigid ring skeleton, and has potential value for synthesis of natural products and bioactive molecules.

The invention provides a method for recovering rhodium in organic residual liquid containing triphenylphosphine / phosphine oxide, and relates to the technical field of precious metal recovery, and the method comprises the following steps: S1, carrying out reduced pressure rectification on the organic residual liquid containing triphenylphosphine / phosphine oxide to remove volatile components until the indexes of the residual liquid meet the feeding requirements of a subsequent process, and collecting light components for independent storage; s2, adding an acidic medium into the organic phase after light component removal, stirring and heating, introducing an oxidizing agent to carry out oxidation-complexation reaction, maintaining reaction conditions until the reaction is complete, standing for phase splitting, and collecting a water phase containing rhodium complex ions; according to the method, a core process combining oxidation-chlorination transfer and anion exchange adsorption is adopted, and key parameters of each process are accurately controlled, so that the rhodium recovery rate is stabilized at 95% or above, the rhodium content in the residual liquid can be reduced to 5 ppm or below, the industrial emission standard is completely met, and compared with the prior art, the resource recovery efficiency is greatly improved, and the cost is reduced. And waste of precious metal resources is effectively reduced.

The invention discloses a recyclable water-based metal cutting fluid and a preparation method thereof. The cutting fluid comprises the following raw materials in parts by weight: 32-36 parts of base oil, 8-12 parts of amines, 9-12 parts of a surfactant, 0-8 parts of an extreme pressure agent, 6-9 parts of a lubricant, 4-6 parts of an antirust agent, 0-2 parts of a bactericide, 2-4 parts of a coupling agent, 0.1-1 part of a defoaming agent and the balance of deionized water. The preparation method comprises the following steps: dissolving the amine in water in advance, adding the anti-rust raw material into the amine solution, fully stirring until the anti-rust raw material is completely dissolved, finally adding the base oil, the surfactant and other additives, and continuously stirring until the anti-rust raw material is completely clarified and transparent. The preferable antirust agent is tris (2-carboxyethyl) phosphine oxide, the excellent extreme pressure effect and bactericidal performance are achieved through carboxyethyl and phosphine oxide structures contained in the tris (2-carboxyethyl) phosphine oxide, and the finished product has good long-term stability, high oil film lubricity and excellent antirust and anti-corrosion performance.

Provided is a carbon dioxide absorbent that has excellent carbon dioxide absorption performance. The present invention provides a compound for a carbon dioxide absorbent, said compound being characterized by being a phosphine oxide compound represented by general formula (1) (where, a, b, and c each represent an integer of 1-10, R1, R2, and R3 each independently represent an amino group or a hydroxy group, and at least one of R1, R2, and R3 represents an amino group).

The invention provides a method for constructing an aryl C-P bond through a reaction of an Ar-F compound of a nickel catalysis electron donating group, which comprises the following steps: in the presence of a nickel catalyst, an additive and alkali, carrying out a coupling reaction on a substituted aryl compound in a formula B and a compound in a formula C diphenylphosphine oxide in an organic solvent to generate an aryl phosphine oxide compound in a formula A, the reaction formula is shown in the specification, Ar is or, and R is an electron-donating group. The method disclosed by the invention has the effects that the substrate has universality, the operation is simple, the condition is mild, a noble metal catalyst and a phosphine ligand are not needed, the cost is low, and the yield is high.

The invention provides a preparation method of photocatalytic hydrogel, belongs to the technical field of photocatalysis, and aims at solving the problems that traditional hydrogen production is high in energy consumption and pollution, and existing photocatalytic hydrogel is low in purity and unstable in performance. The method comprises the following steps: firstly, preparing seven precursors of CPDT-1, CPDT-2Br-SO3Na, PCT-SO3Na, Flu-2Br-SO3Na, PFT-SO3Na, PCBT-SO3Na and PFBT-SO3Na step by step, and carrying out nitrogen purging to prevent oxidation, acetone precipitation, recrystallization and Soxhlet extraction and purification in the process; the four active precursors are mixed with acrylic acid, pentaerythritol triallyl ether and (2, 4, 6-trimethylbenzoyl) diphenyl phosphine oxide respectively, the mixture is subjected to 365nm ultraviolet irradiation polymerization, and four photocatalytic hydrogels are prepared. The method has the advantages of mild conditions, controllable operation, high product purity and stable photocatalytic performance, and is suitable for hydrogen energy preparation and water pollution treatment.

The application provides a kind of eutectic solvent and its preparation method and application, the eutectic solvent includes hydrogen bond donor compound and hydrogen bond acceptor compound, the structural formula of hydrogen bond donor compound is wherein, R1 and R2 independently selected from n-octyl or iso-octyl, the hydrogen bond acceptor compound includes tri-n-octyl phosphine oxide.The eutectic solvent can be efficiently extracted from the permanent magnet rare earth waste hydrochloric acid solution of transition metal, can reduce the use of a large amount of organic solvent in the traditional extraction process.

This invention provides a novel phosphine oxide compound that inhibits SHP2, a composition thereof, a method for preparing the compound, and a method for treating SHP2-related diseases (such as cancer).

A process for the preparation of a compound of the sterically hindered alkoxyamine class is described, the process comprises the step of alkylating a sterically hindered hydroxylamine compound to a corresponding sterically hindered alkoxyamine by reacting said sterically hindered nitroxyl compound with a compound capable of producing a carbon-central alkyl radical, typically a territorial or secondary alkyl radical, the compounds capable of generating carbon-center alkyl radicals are selected from thermal radical initiators that form radical species in the temperature range of 40 DEG C to 200 DEG C, and from photoinitiators that undergo light excitation when irradiated with UV light or visible light in the range of 180 to 700 nm, in particular UV light in the range of 180 to 380 nm, the compounds capable of generating carbon center alkyl radicals are typically selected from the class of organic peroxides, azo compounds, benzoyl derivatives, benzophenone derivatives, thioxanthone derivatives, benzoin derivatives, benzoyl phosphine oxide derivatives, and the like. The invention relates to a peroxide, for example, selected from the group consisting of diacyl peroxides of formula (A), peracid esters of this formula (A), and oxalic acid peracid esters of formula (D) R-CO-O-O-Z-R (A), r-Z ''-X-CO-CO-O-O-Z''-R (D) wherein each R independently represents a primary or secondary alkyl or cycloalkyl group, preferably comprising from 1 to 15 carbon atoms, and X is oxygen-O-or peroxy-O-O-, Z represents CO or an alkylene group bonded to a quaternary carbon atom, the quaternary carbon atom being an alkylene group of formula (C) R '-C-R' (C), wherein each R'is selected from alkyl groups having 1 to 15 carbon atoms, and Z "represents the alkylene group bonded to a quaternary carbon atom having the formula (C). The described process produces the corresponding O-alkylated derivatives of the sterically hindered hydroxylamines, typically compounds of the class referred to as N-O-alkyl HALS, with very high selectivity and conversion and without the need for the use of catalysts, in particular metal catalysts.

The invention relates to the field of organic synthesis, in particular to a synthesis method of gamma-aminophosphine oxide compounds and derivatives thereof. According to the synthesis method disclosed by the invention, alpha, beta-unsaturated amide, diaryl phosphine oxide or phosphite ester is taken as raw materials, and under the action of acid, the gamma-aminophosphine oxide compound can be rapidly and efficiently synthesized by a one-pot method. The preparation method comprises the following steps of: generating conjugated nitrile positive ions or imine salt intermediates with strong electrophilicity from alpha, beta-unsaturated amide under the activation of acid, converting diaryl phosphine oxide or phosphite ester into strong nucleophilic three-coordination phosphorus species under the action of alkali, and further performing phosphorus-doped Michael addition reaction on the conjugated intermediates to finally generate the gamma-aminophosphine oxide compounds. According to the method disclosed by the invention, diaryl phosphine oxide or phosphite which is cheap, easy to obtain and stable in structural property is used as a phosphorus source, the substrate applicability is wide, and the economic cost is relatively low; in addition, the method realizes synthesis of a target product without participation of a metal catalyst, and is rapid and efficient.

The invention provides a lithium coordination extraction micro-cluster as well as a preparation method and application thereof. The lithium coordination extraction micro-cluster is obtained by assembling beta-diketone containing a benzene ring, alkyl phosphine oxide containing the benzene ring and a hydrocarbon compound containing the benzene ring through hydrogen-bond interaction. The lithium coordination extraction micro-cluster obtained by assembling the three substances through hydrogen-bond interaction not only can generate coordination with Li < + >, but also can generate repulsion on ions such as Na < + >, K < + > and B2O4 < 2->, is completely insoluble in water and has extremely high hydrophobicity, so that lithium can be effectively and selectively extracted from a lithium-containing solution, residues are not generated in a water phase, and the lithium-containing solution can be recycled. Therefore, the method is especially suitable for extracting lithium from alkaline salt lake brine in the Tibet autonomous region.

The invention provides a method for preparing a chiral helicene compound through cyclization reaction of an iridium-catalyzed 3-aryl indazole biaryl compound and disubstituted alkyne. The method comprises the following steps: under the action of an iridium catalyst, a chiral cyano phosphorus-oxygen ligand and an additive, carrying out an intermolecular asymmetric carbon-hydrogen bond activation reaction on a 3-aryl indazole biaryl compound and disubstituted alkyne, and after the reaction is finished, separating to obtain the chiral diazaspirene-containing compound, according to the invention, synthesis of the chiral helicene compound is realized through a transition metal catalysis asymmetric carbon-hydrogen bond activation method, the research technology of Cp metal catalysis asymmetric carbon-hydrogen bond activation is further developed, and the synthesis strategy of the chiral helicene compound is expanded at the same time; reaction substrates are wide in universality, and chiral control in the reaction process is realized through the chiral cyano phosphine oxide, so that the product has very high enantioselectivity; various chiral helicene compounds are synthesized, the synthesis method is simple and convenient, and the atom economy is high.

The invention discloses a production process of a cellulose acetate fiber fabric containing natural fragrance, a solvent formed by mixing a modified polymer, 2, 4, 6-trimethylbenzoyl-diphenyl phosphine oxide, a modified microcapsule and dimethylformamide is subjected to dry spinning to prepare the cellulose acetate fiber fabric, and the weight part ratio of the modified polymer to the modified microcapsule is (70-80): (6-8). The preparation method comprises the following steps: by taking an isocyanate group on excessive hexamethylene diisocyanate as a reaction site, firstly reacting with an intermediate containing dihydroxyl, and then reacting with cellulose acetate containing free hydroxyl, so as to prepare the modified polymer. The halamine structure on the molecular chain can destroy cell membranes, enzyme systems or genetic materials through oxidation. The modified capsule has a lavender essential oil and cinnamon essential oil double-component double-capsule-wall structure, the fragrance durability can be improved, the copper sulfide nanoparticles and quaternized chitosan structures can destroy the bacterial cell structure, and the antibacterial performance of the material is improved.

This invention discloses a photosensitive supramolecular fluorescent polymer, its preparation method, and its anti-counterfeiting application in water, using trifluoroethyl methacrylate, hexafluorobutyl acrylate, 4-(acryloyloxy)butyl4-(2-methyl-3-(2-(2-methylbenzo[b]thiophen-3-yl)-4-oxo-5,6-2H-4H-thiaran[2,3-)b]thiaran-3-yl)benzo[b]thiophen-6-yl)-4-oxobutyrate, 4 This polymer was prepared by a simple one-step free radical copolymerization method using 1,1-(acryloyloxy)butyl3-(3,3,4,4,5,5-hexafluoro-2-(2-methyl-1,1-dioxide benzo[b]thiophene-3-yl)cyclopent-1-en-1-yl)-2-methylbenzo[b]thiophene-6-carboxylate 1,1-dioxide and phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide (photoinitiator-819) as raw materials. The polymer exhibits excellent multicolor light-switching performance, high stretch ratio, high self-healing efficiency, strong substrate adhesion, and antifouling properties, especially demonstrating excellent stability under strong acid, strong alkali, and high salt environments. The synthetic route is simple, and it has great application potential in underwater anti-counterfeiting and encryption technologies.

Light-emitting diode (100, 200) with several quantum dots (10), having the light-emitting diode (100, 200): a first electrode (110, 210) and a second electrode (120, 220); an emitting material layer (150, 250); an electron transfer layer (164, 244); and a hole transfer layer (144, 264), wherein the emitting material layer (150, 250) is arranged between the electron transfer layer (164, 244) and the hole transfer layer (144, 264) and the emitting material layer (150, 250) has the quantum dots (10), where the quantum dots exhibit (10): a semiconductor nanocrystal or metal oxide core (20); a shell (30) covering the semiconductor nanocrystal or metal oxide core (20), wherein the shell (30) has an outer surface; an X-type ligand (42) having a functional group selected from the group consisting of a carboxylate group, a phosphate group and a thiolate group, which is bonded to a first region of the outer surface; and an L-type ligand (44) having a functional group selected from the group consisting of an amino group, a thiol group, a phosphine group and a phosphine oxide group, which is bonded to a second region of the outer surface, wherein the X-type ligand (42) is bound to the first region of the outer surface by a negatively charged functional group, and the L-type ligand (44) is bound to the second region of the outer surface by an undivided electron pair, wherein a multitude of the first regions of the outer surfaces of the quantum dots (10) are proximal to the hole transfer layer (144, 264) and distal to the electron transfer layer (164, 244), wherein a multitude of the second regions of the outer surfaces of the quantum dots (10) are proximal to the electron transfer layer (164, 244) and distal to the hole transfer layer (144, 264), and where the outer surface is spherical and the first area is a first hemisphere and the second area is a second hemisphere.

The application provides a method for constructing a C-P bond through a nickel-catalyzed Hirao reaction, comprising the following steps: coupling a substituted aromatic compound 1 and a diphenyl phosphine oxide 2 in an organic solvent in the presence of a nickel catalyst, an additive and a base to generate an aromatic phosphine oxide compound 3, and the reaction formula is as follows: wherein X is any one of F, Cl, Br, I, OTf, B(OH)2 and OCF3; and Ar is an aromatic group. The method has the effects of universality of substrates, simple operation, mild conditions, low cost of noble metal catalysts and phosphine ligands and high yield.

The application relates to a method for synthesizing ferrocene phosphine oxide compounds. Specifically, a ferrocene-substituted compound, diaryl phosphine oxide is used as raw material to realize C-H phosphine oxide reaction of ferrocene under the promotion of electricity. The application has the following advantages: the ferrocene-substituted compound is directly used as a C-H donor without guidance, no additional oxidant and metal catalyst are needed, the condition is mild, the substrate range is wide, and the yield is good.

The invention discloses a self-repairing mute tire and a preparation method thereof, and relates to the technical field of tires, the self-repairing mute tire comprises a tire body, and a self-repairing rubber layer and a mute material which are sequentially attached to the inner wall of the tire body from inside to outside; the self-repairing adhesive layer is prepared from the following components: epichlorohydrin rubber, acrylate rubber, a rosinyl phenyl phosphine oxide isoxazolyl functional polymer, 4, 4-chloroformyl phenyl ether, a catalyst, 2, 2-bis [4-(4-aminophenoxy) phenyl]-1, 1, 1, 3, 3, 3-hexafluoropropane, trithiocyanuric acid, a filler, an accelerant TMTD (Tetramethylthiuram Disulfide) and an auxiliary agent; the rosinyl phenyl phosphine oxide isoxazolyl functional polymer comprises structural units introduced through a condensation polymerization reaction of the following monomers: glycerol triabietate, bis (4-carboxyl phenyl) phenyl phosphine oxide and 3, 5-isoxazoledicarboxylic acid. The tire is remarkable in self-repairing effect, good in mute performance, sufficient in performance stability and long in service life.

The invention provides a Fe-Co-Ni series nano-alloy and a preparation method and application thereof, and belongs to the technical field of functional materials. The alloy is prepared by the following steps of: weighing and proportioning 0.5 mmol of each element by taking chlorate or acetylacetonate or acetate of iron, cobalt, nickel, manganese, copper, zinc and the like with the purity of more than 99.5% and other metal chlorides which are rich in earth surface and economical and practical as precursors, putting the precursors into a pressure-resistant bottle, taking n-trioctylphosphine oxide (TOPO) as a ligand, taking ethanol and 1-octadecene (ODE) as a mixed solvent, and uniformly stirring to prepare the alloy. And synthesizing the hexagonal nano-alloy at low temperature by using a wet chemical method. The method can be used for synthesizing 3-10-element medium-entropy and high-entropy alloy, and has a wide application prospect. The synthesis is a precise process which is guided by an organic ligand, is coordinated by multiple metals and is subjected to nucleation-self-assembly-anisotropic growth.

The application belongs to the technical field of asymmetric catalytic synthesis, and particularly relates to an alpha-carbon chiral phosphine compound and a preparation method thereof. In a protective gas atmosphere, an asymmetric boron protonation reaction is carried out on a dienyl phosphine oxide compound shown in a structure of formula II, pinacol borate, a copper (I) catalyst, a chiral ligand, an organic alkaline compound and a proton additive in a polar organic solvent to obtain an alpha-carbon chiral phosphine compound shown in a structure of formula I; the chiral ligand is a cyclic phosphine ligand (S, S)-Ph-BPE or a cyclic phosphine ligand (R, R)-Ph-BPE. The preparation method provided by the application can synthesize the alpha-carbon chiral phosphine compound shown in the structure of formula I with high yield and excellent enantioselectivity, the synthesis method is simple and low in cost, and the alpha-carbon chiral phosphine compound can be further converted into a new optically active product.

The application provides a lithium ion battery positive electrode with high rate and high safety performance and a preparation method thereof. The preparation method comprises the following steps: S1, polymerizing a phosphite monomer containing trivalent phosphorus, a functional monomer with a phosphine oxide group and a methacrylate monomer to obtain a thermal expansion polymer inner core; adopting a liquid deposition and electrostatic self-assembly process to coat a solid lithium ion conductor and a carbon-based material on the surface of the inner core to form a brittle composite conductive shell layer, thereby preparing a core-shell structure flame-retardant microsphere; S2, coating a primer slurry containing a pyrolysis gas binder and a conductive agent on the surface of a current collector and drying the primer slurry at a temperature lower than the decomposition temperature of the binder to form a thermal trigger safety primer layer; and S3, mixing a positive electrode active material, a binder, a conductive agent and the core-shell structure flame-retardant microsphere to prepare a slurry, coating the slurry on the surface of the primer layer and drying the slurry through gradient temperature rising to obtain the positive electrode. The lithium ion battery positive electrode realizes the simultaneous consideration of high rate and high safety performance.