12 results about "Triphenyl phosphonium" patented technology

The invention belongs to the technical field of coatings, and particularly relates to an aerogel heat preservation and insulation coating, a preparation method and application. The aerogel thermal insulation coating is prepared from the following raw materials in parts by weight: 20-40 parts of deionized water; 1-2 parts of a dispersant; 10 to 20 parts of flame retardant powder I; 1-10 parts of flame retardant powder II; 1-10 parts of superfine heavy calcium carbonate; 1-5 parts of cellulose HECs; 1-2 parts of a multifunctional additive; 1-2 parts of a wetting agent; 1-2 parts of ethylene glycol; 1-2 parts of a defoaming agent; 1 to 5 parts of aerogel; 1-2 parts of a coalescing agent; 1-2 parts of a bactericide; 10 to 20 parts of an emulsion; 1-10 parts of an elastic emulsion; and 10-20 parts of hollow microspheres. The multifunctional auxiliary agent is prepared from the following raw materials: vinyl trimethoxy silane, gamma-glycidyl ether oxypropyl trimethoxy silane, n-dodecyl trimethoxy silane, 3-methyl-1-pentyne-3-alcohol and deionized water, and the multifunctional auxiliary agent is prepared from the following raw materials: trimethoxy silane, gamma-glycidyl ether oxypropyl trimethoxy silane, n-dodecyl trimethoxy silane, 3-methyl-1-pentyne-3-alcohol and deionized water. The bactericide is prepared from the following raw materials: a quaternary ammonium salt bactericide, didodecyl dimethyl dibenzyl ammonium tin chloride, dodecyl triphenyl phosphonium bromide, ditributyltin oxide and a penetrant.

The invention discloses a synthesis method and application of (3S)-1, 3-dimethyl piperazine-2-ketone, and the method comprises the following steps: S101, dissolving D-alanine methyl ester hydrochloride in a first organic solvent, then adding alkali A and 2-methylaminoethanol, after addition, heating to 60-150 DEG C, carrying out stirring reaction for 8-20 hours, after the reaction is completed, carrying out first post-treatment on the reaction liquid, and carrying out second post-treatment on the reaction liquid, so as to obtain the (3S)-1, 3-dimethyl piperazine-2-ketone; the crude product of (R)-2-amino-N-(2-hydroxyethyl)-N-methyl propionamide is obtained; and S102, dissolving (R)-2-amino-N-(2-hydroxyethyl)-N-methylpropanamide in a second organic solvent, then adding (1, 2-bis (ethoxycarbonyl) hydrazino) triphenylphosphonium trifluoromethanesulfonate and alkali B, after addition, carrying out stirring reaction at 15-40 DEG C for 8-20 hours, and after the reaction is completed, carrying out secondary post-treatment on the reaction liquid to obtain the target (3S)-1, 3-dimethyl piperazine-2-ketone.

The invention belongs to the technical field of preparation of hexafluoroisobutylene, and particularly relates to a preparation method of hexafluoroisobutylene, which comprises the following steps: adding an anhydrous tetrahydrofuran solvent into a high-pressure kettle under the condition of maintaining an inert atmosphere in the whole process; then adding a methyl triphenyl phosphorus bromide raw material, controlling the temperature in the high-pressure kettle to be stabilized at 0 DEG C in the process, adding a preset equivalent amount of organic alkali into the high-pressure kettle, continuously stirring and reacting for 4 hours at 0 DEG C in an inert atmosphere to obtain a tetrahydrofuran solution of methylene triphenyl phosphorus serving as a ylide reagent, reducing the temperature to-30 DEG C, and reacting for 2 hours at 0 DEG C in an inert atmosphere to obtain a tetrahydrofuran solution of methylene triphenyl phosphorus serving as a ylide reagent; introducing anhydrous hexafluoroacetone into the high-pressure kettle, reacting for 10 hours, slowly heating to 30 DEG C, and continuously stirring to react for 10 hours; according to the method, the reaction process is simple, the reaction conditions are mild, generated by-products are harmless and convenient to treat, continuous operation of a reaction device is guaranteed, the prepared hexafluoroisobutene product is high in purity and yield, and the preparation method has excellent industrial application prospects.

The invention discloses a preparation method of unsaturated fatty acid cis-9-tetradecenoic acid, and belongs to the technical field of organic compound preparation. The preparation method provided by the invention comprises the following steps: reacting azelaic acid monomethyl ester with a borane reagent to obtain 9-hydroxy methyl nonanoate; then, the 9-formyl methyl nonanoate reacts with a Dess-Martin oxidizing agent, and 9-formyl methyl nonanoate is obtained; then reacting with n-amyl triphenyl phosphorus bromide or diethyl amyl phosphonate in the presence of bis (trimethylsilyl) sodium amide, so as to obtain cis-9-tetradecenoic acid methyl ester; and finally, carrying out hydrolysis reaction to obtain the cis-9-tetradecenoic acid. According to the method disclosed by the invention, the high-purity cis-9-tetradecenoic acid is efficiently and highly selectively prepared by taking the cheap and easily available monomethyl azelate as a starting raw material through key steps of reduction, oxidation, high-selectivity Wittig alkylenation and the like, and large-scale production is facilitated.

The present application relates to the technical field of thermoplastic elastomer, in particular to a disposable visual double-lumen bronchial cannula and a preparation method thereof.The ethylene-propylene thermoplastic elastomer, polypropylene resin, antibacterial silver material and antibacterial zinc oxide material are mixed, and then melt extrusion, cooling and traction are carried out to obtain a pipe material.The pipe material is sequentially subjected to water washing, alcohol washing, drying and plasma treatment to obtain a pretreated pipe material.The antibacterial hydrogel solution is obtained by adding hydroxyethyl acrylamide, acrylic acid, polyvinylpyrrolidone, propenyl quaternary ammonium salt, allyl triphenyl phosphonium bromide and 1-allyl imidazole.The pretreated pipe material is soaked in the antibacterial hydrogel solution, and then the finished product is obtained after ultraviolet irradiation.The finished product prepared by the present application has excellent antibacterial property and lubricity, and therefore has a wide application prospect in the technical field of thermoplastic elastomer.

The invention discloses a preparation method of a cyclopofol intermediate cyclopropyl [2-hydroxy-3-(propyl-2-yl) phenyl] ketone. 2-isopropyl phenol is used as a starting material and reacts with a halogenating reagent under the acidic condition to obtain a compound (A), the compound (A) reacts with a benzyl reagent under the condition of an alkaline reagent to generate a compound (B), the compound (B) and cyclopropanecarbonyl chloride are subjected to a Friedel-Crafts alkylation reaction under the condition of Lewis acid to obtain a compound (C), and the compound (C) and cyclopropanecarbonyl chloride are subjected to a Friedel-Crafts alkylation reaction under the condition of Lewis acid to obtain the compound. The compound (C) finally generates an intermediate compound (D) cyclopropyl [2-hydroxy-3-(propyl-2-yl) phenyl] ketone under the condition of a hydrogenation reagent, the molar yield can reach 85 +%, and the intermediate compound (D) and methyl triphenyl phosphorus bromide are subjected to ylide reaction to obtain 2-(1-cyclopropyl vinyl)-6-(propyl-2-yl) phenol. Splitting (R)-(+)-1-phenylethyl isocyanate to obtain {[(1R)-1-phenylethyl] amino} methanoic acid-6-[(1R)-1-cyclopropylethyl]-2-(propyl-2-yl) phenyl ester with a single configuration, wherein the {[(1R)-1-phenylethyl] amino} methanoic acid-6-[(1R)-1-cyclopropylethyl]-2-(propyl-2-yl) phenyl ester has a single structure; the purity of the finished cyclopofol finished product obtained through refining can reach 99.9%, the cost is low, operation is easy and convenient, and industrial production is easy.

The application discloses a preparation method of 2-methyl-4-chloro-2-butenoic acid ethyl ester, which comprises the following steps: taking an ethoxycarbonyl ethyl triphenyl phosphonium salt aqueous solution and a monochloroacetaldehyde aqueous solution as raw materials, and performing a Wittig reaction under the action of an alkali to obtain 2-methyl-4-chloro-2-butenoic acid ethyl ester, wherein the content of alkali metal ions in the 2-methyl-4-chloro-2-butenoic acid ethyl ester is 1-3 ppm. The method has the advantages of high reaction yield, simple and mild process conditions, moderate residual amount of metal ions in the product, good storage stability of the product and the like.

The application discloses a near-infrared film and a preparation method thereof. The near-infrared film is prepared by the following method: mixing cadmium bromide, antimony bromide and propyl triphenyl phosphonium bromide, wherein the ratio of the sum of the molar amounts of the cadmium bromide and the antimony bromide to the molar amount of the propyl triphenyl phosphonium bromide is 1:2.001; the molar amount of the antimony bromide is 0.1% to 50% of the molar amount of the cadmium bromide; then adding a polar solvent to dissolve and filter to obtain a precursor solution, and finally using the precursor solution to prepare the near-infrared film. The application introduces the antimony element into the organic-inorganic hybrid cadmium halide, combines ligand regulation engineering and halogen regulation engineering, and prepares a novel near-infrared film. The near-infrared film realizes near-infrared light emission with a peak position of 760 nm for the first time by using the antimony element, the light emission is not affected by a matrix, the light emission efficiency is high, the stability is high, the film forming performance of the film is good, the preparation method is simple and easy to implement, and the near-infrared film has low cost and large-scale production potential.

The invention discloses a high-transparency manganese-based halide luminescent organogel and a preparation method thereof, and the preparation method comprises the following steps: dissolving manganese bromide and isoamyl triphenyl phosphonium bromide in 1-vinyl-2-pyrrolidone to obtain a mixture; adding 1-hydroxycyclohexyl phenyl ketone into the mixture, and carrying out ultrasonic treatment to obtain a transparent solution; and carrying out a photocuring reaction on the transparent solution to obtain the high-transparency manganese-based halide luminous organogel. According to the preparation method, all the raw materials are directly mixed to prepare a uniform and transparent solution, under the irradiation of ultraviolet light, polymerization reaction of monomers is synchronously realized to form a high-transmittance gel network and in-situ generation of a manganese-based halide light-emitting unit, and finally, the amorphous manganese-based halide light-emitting organic gel with high transparency is obtained.

Compositions and methods for treating chlorine gas-induced pulmonary injury are disclosed. The described approach targets calcium / calmodulin-dependent protein kinase II (CaMKII), an enzyme activated in lung cells upon chlorine exposure, which contributes to oxidative stress and inflammation. The compositions include one or more CaMKII inhibitors, such as CaMKIIN peptides, encapsulated in liposomes and / or nanoparticles designed for pulmonary delivery. The liposomes can be conjugated with mitochondrial targeting moieties, such as triphenyl phosphonium bromide (TPP), to enhance delivery to mitochondria, where CaMKII activation occurs. The method involves administering the composition via inhalation or other routes to mitigate lung damage, reduce oxidative stress, and improve pulmonary function. This approach provides a targeted and effective solution for managing chlorine¬ induced respiratory distress, addressing limitations of current therapies.

This invention relates to the field of manganese metal halide technology, specifically to a metal halide with multiple excitation sources. The metal halide has the structural formula A2[MnCl4], where A is CTP or BTP, CTP is (2-chlorobenzyl)triphenylphosphonium cation, and BTP is benzyltriphenylphosphonium cation. The preparation method of the metal halide includes step 1: dissolving MnCl2 and substance A in methanol at room temperature to form a clear and transparent solution; step 2: slowly evaporating the solution from step 1 in an oven for 48 hours to prepare a light green blocky A2[MnCl4] single crystal. The (CTP)2MnCl4 and (BTP)2MnCl4 prepared by this invention exhibit defect-assisted four-coordinated Mn at 513 and 516 nm, respectively. 2+ The strong green light emission generated by the d-d transitions of the CTP2MnCl4 and BTP2MnCl4 photoluminescence quantum yields reached as high as 98.5% and 88.4%, respectively. Based on commercial CsI:Tl scintillators, the photoluminescence yields of the CTP2MnCl4 and BTP2MnCl4 scintillators were calculated to be as high as approximately 89,000 and 49,000 photons / MeV, respectively. The scintillator screen of CTP2MnCl4@PDMS also achieved high-resolution X-ray imaging with a speed of up to 9.1 lp / mm.

The invention relates to the technical field of oil field water treatment, in particular to a corrosion inhibition bactericide for oil field sewage and a preparation method thereof.The method comprises the steps that 1, dibromo-hydrocarbon, triphenylphosphine and a first solvent are mixed according to the required amount, and after a reaction is conducted, a bromo-alkyl triphenyl phosphonium bromide intermediate is obtained; and step 2, mixing a required amount of brominated alkyl triphenyl phosphonium bromide intermediate, a nitrogen-containing organic matter and a solvent 2, and reacting to obtain the corrosion inhibition bactericide for the oilfield sewage, wherein the nitrogen-containing organic matter is one or two of long-chain alkyl dimethyl tertiary amine and quinoline. The corrosion inhibitor has a good corrosion inhibition effect, can effectively inhibit corrosion of CO2 acid gas in oilfield sewage, has a better bactericidal effect than a single quaternary ammonium salt, is small in dosage, can avoid the problem of compatibility when two different agents are used, and can achieve the effects of inhibiting metal corrosion and killing sulfate reducing bacteria in the oilfield sewage treatment and reinjection process.