27 results about "Phenylphosphine" patented technology

The application relates to the technical field of catalysts, and discloses a palladium / alumina catalyst and a preparation method and application thereof. A Schiff base phosphine cyclodextrin ligand is synthesized through two-step reactions of nucleophilic substitution and Schiff base condensation, the molecular structure of the ligand covalently bridges the hydrophobic cavity of beta-cyclodextrin and the strong coordination site of diphenylphosphine through a rigid Schiff base bond; subsequently, the phosphine group of the ligand is coordinated with a palladium salt under a specific pH, and a uniform and stable palladium-ligand colloid precursor is formed under the assistance of a directing agent and a stabilizing agent; finally, the colloid is mixed with an alumina carrier for impregnation, drying, and a palladium / alumina catalyst is obtained. Through molecular design and process innovation, the problems of low activity, poor selectivity and insufficient stability of traditional catalysts are solved. When the catalyst is used for preparing hydrogen peroxide by hydrogenating anthraquinone, the hydrogenation efficiency is significantly improved, the selectivity is extremely high, and the cycle stability is excellent, so the catalyst has important industrial application value.

The application discloses a high-temperature-resistant polyvinyl chloride adhesive tape and a preparation method thereof, and belongs to the technical field of polymer materials and adhesive products. The high-temperature-resistant polyvinyl chloride adhesive tape comprises the following raw materials in parts by weight: synergistically modified polyvinyl chloride, diphenyl phosphine oxide, chlorinated polyethylene, diisononyl phthalate, antimony trioxide, calcium stearate, zinc stearate, an antioxidant and a leveling agent; the synergistically modified polyvinyl chloride is obtained by introducing catechol structures on the surface of polyvinyl chloride through dopamine self-polymerization deposition, forming a dynamic borate ester structure with 3-aminobenzoic acid, and constructing a Si-O-Si network structure through hydrolytic condensation reaction of octa(3-aminopropyl)silsesquioxane and N-(beta-aminoethyl)-gamma-aminopropyl triethoxysilane. The dopamine-borate ester-silicone synergistic network structure is constructed, and the diphenyl phosphine oxide is introduced for function regulation, so that the heat resistance, mechanical properties and dimensional stability of the polyvinyl chloride adhesive tape are significantly improved.

The present invention relates to a method for recovering and reusing a selective homogeneous hydrogenation catalyst. The present invention relates to a method for recovering a selective homogeneous hydrogenation catalyst from a second reaction resolution in which a synthesis of cyclododecene is completed after synthesizing the cyclododecene by selective hydrogenation of a first reaction solution containing cyclododecatriene, triphenylphosphine, formaldehyde, and ruthenium chloride, and the method includes: preparing the selective homogeneous hydrogenation catalyst from the triphenylphosphine, the formaldehyde, and the ruthenium chloride during the selective hydrogenation of the first reaction solution, and synthesizing the cyclododecene; mixing a solvent containing cyclododecanone with the first reaction solution; and recovering the selective homogeneous hydrogenation catalyst through evaporation separation from the second reaction solution in which the synthesis of the cyclododecene is completed.

The present invention relates to an improved process for preparing triphenylphosphine (TPP) by reacting triphenylphosphine oxide (TPPO) with a specific catalyst.

This invention discloses a semi-sandwich structured ruthenium triphenylphosphine dithiocarboxylic acid complex with a simple preparation process and its applications. The complex has the structure shown in Figure (I), with the central ruthenium and... η 5 - Coordination with cyclopentadiene, triphenylphosphine, and dithiocarboxylic acid derivatives, wherein the dithiocarboxylic acid ligands are selected from ethyl xanthic acid, isopropyl xanthic acid, ... N,N Diethyldithiocarbamic acid, morpholine dithiocarbamic acid, and carbazole dithiocarbamic acid. This invention employs a simple one-step method of room temperature preparation and recrystallization purification using a ruthenium precursor and dithiocarbamic acid ligand. This method offers advantages such as readily available raw materials, mild reaction conditions, simple post-processing, and high yield. In vitro tests show that the complexes exhibit excellent anti-proliferative activity against non-small cell lung cancer A549 cells, significantly superior to cisplatin. The complexes demonstrate activity by reducing mitochondrial membrane potential, inducing intracellular reactive oxygen species accumulation, and arresting the cell cycle (G1 phase), leading to late apoptosis in A549 cells.

This invention relates to the field of perovskite solar cell technology, and discloses a method for preparing a hole transport layer and a perovskite solar cell. The method utilizes spiro-OMeTAD as the hole transport layer, mixes ethyltriphenylphosphine bis(trifluoromethanesulfonyl)imide salt (ETPTFSI) in a CB solvent, forms a precursor solution through photopretreatment, and then forms the hole transport layer through a coating process. The method also explores the discovery of ethyltriphenylphosphine cation (ETP... + The lowest unoccupied molecular orbital (LUMO) energy level is similar to that of organic high conductivity layers (HTLs), and upon photoexcitation, it accepts an electron from the organic semiconductor and forms a neutral radical ETP. • ETP • The unpaired electrons in the chlorobenzene have high energy and can break the C-Cl bond in chlorobenzene. This reaction chain promotes the efficient doping of organic HTL by the solvent CB through CB. In addition, ETPTFSI has extremely low hygroscopicity and a large space size, which helps to improve moisture resistance and reduce the migration of iodide ions to the HTL / silver electrode, thereby significantly improving stability.

The application discloses a preparation method of a photoinitiator TPO and belongs to the field of photoinitiators. The preparation method of the photoinitiator TPO comprises the following steps: carrying out chlorination reaction on diphenyl phosphoric acid and a chlorinating agent to generate diphenyl phosphinic chloride; carrying out condensation reaction on the diphenyl phosphinic chloride and 2,4,6-trimethylbenzyl magnesium chloride to obtain (2,4,6-trimethylbenzyl) diphenyl phosphine oxide; and carrying out oxidation addition reaction on the (2,4,6-trimethylbenzyl) diphenyl phosphine oxide and an oxidizing agent to obtain the photoinitiator TPO. The diphenyl phosphoric acid originally as solid waste is fully utilized, waste is turned into treasure, energy is fully utilized, environmental protection pressure is reduced, the synthesis mode of the photoinitiator TPO is expanded, and the production cost of the photoinitiator TPO is reduced, and the economic and environmental friendliness of the photoinitiator TPO makes the preparation method convenient for large-scale popularization and application.

This invention relates to the field of phosphomolybdate catalyst technology, specifically disclosing a phenylphosphine-functionalized phosphomolybdate, a photoelectric sensor, its preparation method, and its application. The molecular formula of the phenylphosphine-functionalized phosphomolybdate is: [Na2(bib)2(H2O)3]{Fe[Mo6(PO3C6H5)4O 15 H5]2}·2H3O, where bib is 4,4'-bis(1H-imidazol-1-substituted)-1,1'-biphenyl. The phenylphosphine-functionalized phosphomolybdate provided by this invention possesses excellent photocatalytic and electrocatalytic activity. Photoelectric sensors prepared from it exhibit outstanding electrochemical sensing performance, including high sensitivity, wide linear range, low detection limit, and rapid response. Furthermore, they demonstrate good cycling stability and anti-interference ability, showing broad application prospects in the dual-function detection of trace and ultra-trace amounts of Cr(VI) and LVF.

A zwitterion polymer of formula (1) or a labeled form thereof, and a preservative composition for biological samples, comprising the samewherein X1 and X2 each represent a carbon or nitrogen atom; Y1 and Y2 each represent —COO−, —SO3−, —OP═O(H)O−, —OP═O(CH3)O−, or —OP═O(OR1)O−; Z represents a hydrogen atom, an aromatic hydrocarbon group having 6 to 10 carbon atoms, an 5- or 6-membered aromatic heterocyclic group, an nitrogen-containing heterocyclic ammonium salt, a tetraalkylammonium salt, a tetraphenylphosphonium salt, a tetraalkylphosphonium salt, a trialkylsulfonium salt, or an alkyl group having 1 to 22 carbon atoms; e and f each represent an integer 0 or 1; 1, m, and n are each a number which satisfies 0<1≤1, 0≤m<1, 0≤n<1, and 1+m+n=1; and p, q, r, s, and t are each an integer 0 to 6.

This invention relates to a method for preparing trivalent phosphorus from triphenylphosphine sulfur, belonging to the field of organic synthesis technology. The invention applies this method to the conversion of phosphorus and sulfur compounds, using metallic iron powder as a reducing agent to achieve a high yield of triphenylphosphine sulfur by reduction at 100℃-135℃. In this invention, the catalyst for triphenylphosphine sulfur, ferric chloride, is only required in a small amount, for example, 1-5 mol%, to produce a high yield of triphenylphosphine. This invention overcomes the problem in existing technologies where the reduction of triphenylphosphine sulfur is limited by high reaction temperatures. The raw materials used in this invention are inexpensive and readily available, and it does not use expensive reagents such as silane or borane, resulting in a significant cost advantage and making it suitable for large-scale industrial applications.

The present invention describes the gold-catalyzed construction of geminocyano-substituted tricyclic [4.4.0.0] 1,5 The method for synthesizing the decane skeleton belongs to the field of organic synthesis technology. Compound 1 is added to an organic solvent, and the reaction is carried out at 25℃-80℃ for 3 hours in the presence of a gold catalyst and additives to obtain product compound 2. The gold catalyst is selected from triphenylphosphine monochloride, triphenylphosphine gold(I) 3-methylbenzotriazole salt, and triphenylphosphine gold(I) trifluoromethanesulfonate. The additive is selected from silver trifluoromethanesulfonate, silver fluoroantimonate, and silver bis(trifluoromethanesulfonylimide). The synthetic method described in this invention is simple to operate, low in cost, highly efficient, and widely applicable, possessing practical application value. Substrate 1 in this invention can be flexibly derivatized by adjusting the structure of its synthetic raw materials or through subsequent functionalization modifications, providing greater convenience for skeleton modification. This invention utilizes the properties of gold catalysts to achieve rapid and convenient synthesis of fused-ring skeletons containing three-membered rings that are difficult to synthesize under other conditions.

The application belongs to the technical field of phosphine salt catalysts and packaging, and discloses a tetraphenyl phosphonium salt high-latency catalyst and application of the catalyst in a chip packaging epoxy plastic packaging material; tetraphenyl phosphonium cations and large steric hindrance aryl organic acid anions are combined through ionic bonds in a molar ratio of 1:0.95-1.05, and the organic acid anions are selected from naphthalene ring dicarboxylic acid monoanions, diphenyl sulfonic acid anions or tert-butyl phenyl phosphoric acid anions; the catalyst has no epoxy ring opening catalytic activity, the ionic bond is quickly dissociated when the temperature reaches 160 DEG C or above, the solubility is greater than or equal to 10 wt% at 170 DEG C, the total halide content is less than 10 ppm, and the thermal decomposition temperature is higher than 220 DEG C. The application adopts an ionic structure design, solves the problems of normal temperature pre-crosslinking of existing small-molecule organic phosphine accelerators, reduction of halogen impurities to reduce device reliability, poor compatibility of microcapsule type accelerators, and complex process, is suitable for existing epoxy plastic packaging material production processes, and can be used in the field of semiconductor packaging.

This invention discloses a sprayable polyurea material and its preparation method suitable for in-situ spray repair of underground pipelines, belonging to the field of polymer materials and infrastructure repair technology. The material consists of two components, A and B, in a 1:1 volume ratio. Component A includes a bio-based terminal amine polyether, a specifically formulated amine chain extender, and functional additives; component B is a phosphorus-doped isocyanate prepolymer obtained through a two-step prepolymerization reaction of hexamethylene diisocyanate, 4,4'-(pentane-2,2-diyl)diphenol, and acetic acid phenylphosphine. This material innovatively introduces the flame-retardant element phosphorus in a covalent bond form, and, in conjunction with bio-based hydrophobic segments and a rigid benzene ring structure, achieves a bonding strength higher than 1.0 MPa on a damp substrate with a relative humidity ≥90%, a flame retardancy rating of UL94 V-0, high tensile strength and toughness, and excellent corrosion resistance and durability. This solves the core problems of traditional repair materials, such as poor adhesion on damp substrates, lack of flame retardancy, and limited structural reinforcement.

This invention belongs to the field of electrode material technology, and discloses a Fe-N / P co-doped porous carbon, its preparation method, and its application in lithium-sulfur batteries. The porous carbon is obtained by pyrolyzing sodium citrate. The three-dimensional porous carbon framework and its hierarchical channels achieve Fe-N / P co-doping through electrostatic interactions. 3+ Spatial confinement and initial fixation; subsequently, glucose and Fe 3+ A chelation reaction occurs, forming dispersed organometallic units, effectively inhibiting the aggregation of iron species; finally, mild pyrolysis promotes the exchange of N / P and Fe elements in melamine (triphenylphosphine). 3+ By combining with a porous carbon matrix, a single-atom catalyst with a stable Fe-N-P-C coordination structure is constructed. The method of this invention balances high metal loading with large-scale production; the sulfur cathode material obtained by compositing the Fe-N / P co-doped porous carbon with sulfur exhibits excellent electrochemical performance in lithium-sulfur batteries.

The present application relates to the technical fields of nano-catalytic material preparation and heterogeneous catalysis, and particularly relates to a Pd5P2 / CNFs catalyst based on sulfide replacement phosphorization and a preparation method and application thereof.A mixed solution of palladium acetate and thiourea is adsorbed on carbon nanofibers; a palladium sulfide Pd4S / CNFs intermediate is generated in situ through hydrogen atmosphere heat treatment; triphenylphosphine is used as a phosphorus source to realize the replacement of sulfur by phosphorus through gas phase migration under low temperature conditions, and a topological phase change generates the Pd5P2 / CNFs catalyst.The present application uses sulfur atoms as anchoring agents to prevent metal aggregation, and as sacrificial templates to reduce the energy consumption of phosphorization, so that small-size, highly-dispersed palladium phosphide catalysts can be prepared under mild conditions.The present application solves the problem that palladium phosphide is usually prepared under high temperature conditions.The application of the present application to quinoline selective hydrogenation reactions exhibits excellent catalytic activity, selectivity and significant nitrogen poisoning resistance.

The application belongs to the technical field of catalyst preparation, and provides a high-loading cobalt monatomic transition metal-based composite catalyst, a preparation method thereof and oxygen reduction application. ZIF material of the application is converted into nitrogen-phosphorus co-doped porous carbon through pyrolysis reaction combined with triphenylphosphine, the porous carbon is used as a carrier, and monatomic cobalt, cobalt nanoparticles, molybdenum species (MoC) and cobalt species (Co9S8) generated by pyrolysis are limited in the porous carbon. The nitrogen-phosphorus co-doped porous carbon can improve the conductivity of the catalyst, and the existence of phosphorus and nitrogen elements provides a stable environment for metal monatomic atoms, so that the catalyst has high metal loading while maintaining the monatomic structure. At the same time, Co9S8 generated by cobalt sulfide increases the metallicity of the catalyst, further provides rich catalytic active sites for the catalyst, so that the catalyst exhibits excellent performance in the oxygen reduction reaction, and the half-wave potential can reach 0.94 V, which is 90 mV higher than that of the Pt / C-based catalyst.

The application discloses a kind of chiral 7-azaindoline amide compounds, its synthesis method and application, belong to organic chemistry synthesis and medical technology field, the compound has with N-[3-phenyl-3-(diphenyl phosphoryl) propionyl] Substituted 7-azaindoline as basic skeleton Structural characteristics;Its synthesis method is: under room temperature condition, copper salt is dissolved in organic solvent with chiral ligand (L) Stirring mixing, then sequentially adding α, β-unsaturated 7-azaindoline amide (I), diphenyl phosphine (II) And base, after stirring reaction, the target product is obtained by separation and purification;The compound provided by the application can be efficiently converted into other novel 7-azaindoline derivatives by simple reaction, and has potential application value in the field of medicinal chemistry and asymmetric catalysis;The synthesis method provided by the application has the advantages of simple operation, mild reaction condition, wide substrate applicability, high yield and high enantioselectivity.

This invention discloses a method for the synergistic catalytic carbonylation of furfuryl alcohol to FDCA using rhodium and iodide ligands, relating to the field of FDCA synthesis technology. Using rhodium dicarbonyl chloride dimer ([Rh(CO)₂Cl]₂) as the main catalyst, iodomethane (CH₃I) as the co-catalyst, and triphenylphosphine (PPh₃) as the ligand, the method achieves efficient carbonylation of furfuryl alcohol in an acetic acid-water mixed solvent at 180-200°C and 4-6 MPa carbon monoxide pressure. Through synergistic design of the catalytic system and optimization of process conditions, highly efficient conversion of furfuryl alcohol and highly selective generation to FDCA are achieved. The furfuryl alcohol conversion rate can reach over 95%, and the FDCA selectivity can reach over 93%, significantly superior to traditional rhodium catalytic systems, reducing the generation of byproducts and the burden of subsequent purification.

The present invention belongs to the technical fields of lipid peroxidation fluorescent probe design synthesis and visualization imaging. Provided are a lipid peroxidation detection probe based on a perylene imide-triphenylphosphine structure, a preparation method therefor and the use thereof. The structural formula of the lipid peroxidation detection probe is shown as formula (I). The lipid peroxidation detection probe is based on structural optimization of perylene imide-triphenylphosphine compound Liperfluo, thereby greatly improving the stability thereof. The present invention has good sensitivity and selectivity to a ferroptosis marker lipid hydroperoxides, involves simple pretreatment of test samples, can be used for detecting ferroptosis endogenously and exogenously caused by fibrosarcoma cells, and can be used for studying specific regulation mechanisms and biological functions for ferroptosis-related metabolic diseases. The detection probe is a solid powder, is easy to store and use, involves a simple synthesis method, has a high yield and a low cost, and has good prospects in market application.

The application discloses an ethyne hydrochlorination reaction catalyst, which is prepared by stirring nitrogen-containing precursors, phosphorus-containing precursors, copper sources and organic solvents uniformly, drying, high-temperature calcination and acid washing; the nitrogen-containing precursors are one or more of 1-butyl-3-methyl imidazole bromide, 1-butyl-3-methyl imidazole chloride, 2-methyl imidazole and pyridine; the phosphorus-containing precursors are one or more of phosphoric acid, triphenyl phosphine, tetraphenyl phosphonium bromide and tetraphenyl phosphonium chloride; and the copper source is copper chloride or copper nitrate. The catalyst obtained by the application has the advantages of high stability and high activity.

The application discloses a chiral pyrroloimidazolone-xanthene-triphenylphosphine ligand. The application generates a target product chiral pyrroloimidazolone-xanthene-triphenylphosphine ligand through condensation reaction of corresponding prolyl arylamine 1 and triphenylphosphine xanthene formaldehyde 2. The ligand comprises a triphenylphosphine group, a xanthene group and a chiral pyrroloimidazolone group. The chiral pyrroloimidazolone group can provide a chiral cavity environment, the xanthene group can provide a rigid skeleton, and the phosphorus atom of the triphenylphosphine group belongs to an electron-rich coordination site, can form coordination with metal, thereby generating a chiral ligand metal phosphine complex, and the application in catalyzing asymmetric allyl alkylation of alcohol. Therefore, the ligand has important application value in the field of asymmetric catalytic synthesis, and the synthesis method is very economical and simple. The ligand also has good air stability, wide applicability and good compatibility for various substituents.

The application belongs to the technical field of carbon capture, and discloses an organic amine absorbent suitable for carbon capture of cement kiln flue gas, and a preparation method and application thereof. The organic amine absorbent comprises the following components in mass fraction: 3.0-6.0 parts of a main agent, 1.0 parts of an auxiliary agent, 0.1-0.5 parts of a promoter, and 0.1-0.5 parts of a stabilizer. The main agent comprises a binary amine, the auxiliary agent comprises a tertiary amine, and the promoter is one or more of 1,3,5-tri-tert-butylbenzene, tert-butyl acetate, triphenyl carbinol and triphenyl phosphine. The application can take into account high-temperature degradation resistance and selective adsorption of impurities, and simultaneously solves the problems of insufficient high-temperature stability and lack of anti-impurity interference ability of the organic amine absorbent in the prior art.

The application discloses a preparation method of a benzopyran derivative containing an amide structure, which comprises the following steps: reacting propargyl ether compound, hexafluoroisopropanol and N-iodosuccinimide at 60 DEG C for 1 h, then adding a nitro compound, palladium acetate, 2-diphenylphosphine-biphenyl, carbonyl molybdenum, potassium carbonate and water to react at 100 DEG C for 24 h, and after the reaction is completed, post-treatment is carried out to obtain the benzopyran derivative containing the amide structure. The preparation method uses the nitro compound as a reactant and a nitrogen source, and uses the carbonyl molybdenum as a carbonyl source, has mild reaction conditions, simple operation, a wide functional group tolerance range of a substrate and high reaction efficiency. According to actual needs, various benzopyran derivatives containing the amide structure can be synthesized, and the method is convenient to operate and wide in practicability.

The application discloses a kind of alpha-lipoic acid loaded polylactic acid composite nanoparticles and preparation method and application thereof.The nanoparticles are formed with polylactic acid-glycolic acid copolymer to form a hydrophobic inner core, with distearoyl phosphatidyl ethanolamine-polyethylene glycol- triphenylphosphine to form a surface functional layer, and alpha-lipoic acid is loaded. The system has the advantages of mild preparation conditions, uniform particles, high drug loading efficiency, slow release in gastric acid environment, sustained release in neutral or weak acid environment, good cell compatibility, and enhanced mitochondrial regional positioning. The nanoparticles can reduce hypoxia-induced reactive oxygen species and Ca²⁺ elevation, improve ATP deficiency, and reduce myocardial and lung tissue damage, and are suitable for preparing pharmaceutical preparations for alleviating hypoxia-induced mitochondrial dysfunction and related organ damage.

The application discloses a preparation method of a metal-loaded carbon catalyst and application of the metal-loaded carbon catalyst in synthesis of ynamines, and an expression formula of the metal-loaded carbon catalyst is M@C-T or M / L@C-T, wherein M is any one or more than one of metals Cu, Ni, Fe or Co; L is any one or more than one of bipyridine, triphenylphosphine, o-phenanthroline, tributyl phosphate or triethyl phosphite; C represents carbon; and T is temperature, and T is 300 DEG C to 800 DEG C. Through construction of the carbon catalyst and a suitable catalytic system, the application realizes preparation of ynamine derivatives by catalyzing reaction of O-acetyloxime and a terminal alkyne.