42 results about "Zinc trifluoromethanesulfonate" patented technology

Disclosed is a chargeable water-system zinc ion battery with long cycle life and high energy density. The chargeable water-system zinc ion battery comprises a positive electrode shell, an elastic sheet, a gasket, a positive electrode active substance, a diaphragm, a negative electrode active substance and a negative electrode shell, and all the components form a laminated layer structure in sequence, wherein the positive electrode active substance is positive ion defect type ZnMn<x>O<4>/C nanocomposite; the negative electrode is zinc foil or spherical zinc powder; the diaphragm is polyethylene nonwoven fabric or filter paper; and the electrolyte is a zinc trifluoromethanesulfonate water solution. The chargeable water-system zinc ion battery has the advantages that the ZnMn<x>O<4>/conductive carbon composite electrode material has simple and easily feasible preparation process; the synthesized ZnMn<x>O<4> nano crystals are uniformly embedded in the conductive carbon; due to the electrolyte, the Zn deposition/separation-out coulombic efficiency can reach about 100% and a wide electrochemical window of 0-2.5Vvs.Zn<2+>/Zn is realized; the positive electrode active substance and the novel electrolyte are applied to the water-system zinc ion battery, so that the battery shows a good electrochemical performance; and meanwhile, the battery has high reversible zinc storage capacity with high active substance content, and excellent cycling stability .

A process for chemically synthesizing 1, 2, 3, 4-tetrazolium includes such steps as dissolving zinc trifluoro methylsulfonate in water, adding nitrile and sodium azide, reacting, adding acid for neutralizing and filter. Its advantages are high output rate, and no pollution.

The invention discloses a preparation method of a silodosin intermediate. The preparation method comprises the following steps that in an organic solvent, under the action of lewis acid, friedel-crafts acylation reaction occurs between a compound 2 and a compound 3, so as to obtain a compound 4, wherein the lewis acid is one of or more of zinc trifluoromethanesulfonate, bismuth trifluoromethanesulfonate, scandium trifluoromethanesulfonate and aluminum trichloride; under the action of organic acid or boron trifluoride ether complex, the compound 4 reacts with triethyl silicane, so as to obtain a compound 5; the compound 5 reacts with sodium azide, so as to obtain a compound 6; under the action of catalysts, the compound 6 reacts with di-tert-butyl dicarbonate ester and hydrogen, so as to obtain a compound 7; under an acidic condition, the deamination protective reaction of the compound 7 occurs, so as to obtain a compound 8; the compound 8 reacts with L-tartaric acid, so as to obtain a compound 1, namely the silodosin intermediate. The preparation method of the silodosin intermediate has the advantages of simplicity, economy and mild reaction conditions, and chiral resolution is not needed.

The invention relates to a method for preparing a 1, 3-dioxolane compound. With the catalysis of zinc trifluoromethanesulfonate, an epoxy compound reacts with ketone or aldehyde to generate the 1, 3-dioxolane compound and the rate of conversion is increased. The method can be applied to the development of a new production technology that ethylene alcohol is prepared by the hydrolysis of epoxy ethane in the field of petrochemical industry, save energy and reduce investment in equipment.

The invention discloses a method of preparing polyaspartic ester. The preparation method comprises the following steps: (1) organic primary amine and unsaturated dibasic acid ester are subjected to Michael addition reaction under the catalysis of a supported Lewis acid catalyst, and (2) a catalyst and excessive unsaturated dibasic acid ester are removed from the reaction solution obtained in the step (1) to obtain polyaspartic ester, wherein the supported Lewis acid catalyst comprises 40-60 wt% of indium trifluoromethanesulfonate, 10-30 wt% of one or more of indium chloride, copper trifluoromethanesulfonate, aluminum trifluoromethanesulfonate and zinc trifluoromethanesulfonate, and the balance of a carrier, and the content is based on the total weight of the catalyst. Raw materials of thecatalyst are common and easy to obtain, the preparation method is simple and convenient, and the method has the advantages of good catalytic activity, high primary amine conversion rate, simplicity and convenience in operation, high product quality and the like when used for preparing polyaspartic ester.

The invention relates to the technical field of catalyst synthesis, in particular to a zinc trifluoromethanesulfonate-loaded spherical mesoporous material, and a preparation method and application thereof. The mesoporous material serves as a catalyst which is used for a reaction process for preparing cyclohexanone-1,2-propylene glycol from cyclohexanone and 1,2-propylene glycol. The mesoporous material has the advantages of high conversion rate of a reactant after a catalytic reaction, a small number of side reactions, high product purity, high conversion rate after repeated use and environmental friendliness.

The invention relates to a method for asymmetrically synthesizing a dihydrofuran-2-(3H)-one compound under the catalysis of nickel, wherein the method comprises the steps: by taking gamma-ketonic acid as a raw material, adding a nickel catalyst, a ligand and Lewis acid in an organic solvent environment in which hydrogen is taken as a hydrogen source at the pressure of 0.1-6 MPa and the temperature of 50-90 DEG C, and carrying out hydrogenation reaction to synthesize the dihydrofuran-2-(3H)-one compound. By adopting a transition metal-lewis acid synergistic catalysis strategy and taking nickel acetate tetrahydrate as a transition metal catalyst, the preparation method has the advantages of easiness in obtaining and low cost; zinc trifluoromethanesulfonate is added, so that the reaction temperature is greatly reduced from 150 DEG C to 70 DEG C, and compared with a metal catalytic reaction in the prior art, the reaction is milder. The method disclosed by the invention is wide (suitable) in application range, simple in catalytic system, simple and convenient to operate and high in yield and enantioselectivity (the yield is as high as 97%, and ee is as high as 95%), the production cost is greatly reduced, and the method has remarkable social benefits and economic benefits.

The invention discloses a method for synthesizing 1,8-cineole from terpilenol, and relates to the technical field of synthesis of 1,8-cineole. Terpilenol is converted into 1,8-cineole through heterogeneous catalysis with zinc trifluorosulfonate or copper trifluorosulfonate as the catalyst. Terpilenol, dichloromethane and a solid catalyst are added into a reaction bulb for a stirring reaction through a stirrer under the protection of nitrogen at normal temperature and normal pressure, and the interference of an external environment is avoided. Dichloromethane diluted reaction liquid is added after the reaction is completed, a saturated sodium bicarbonate solution is added for extraction, a dichloromethane phase is synthesized and washed three times with a saturated salt solution, anhydroussodium sulfate is added for drying, and an organic phase is concentrated to obtain 1,8-cineole with certain purity. It is verified through experiments that the terpilenol conversion rate is up to 98%and the effective conversion rate of 1,8-cineole reaches 60% or above. Terpilenol is low in price and easy to obtain when serving as the raw material, and the production cost is reduced; high temperature, high pressure and other strict conditions are avoided, the technological steps are simple, the reaction time is short, and the conversion rate is high; no harmful byproducts can be generated, andthe method is friendly to the environment.

The invention belongs to the field of production of zinc trifluoromethanesulfonate, and discloses a preparation process of zinc trifluoromethanesulfonate, which comprises the following raw materials:carbon disulfide, trifluoroiodomethane, sulfur, mercury, hydrogen peroxide and zinc, and comprises the following production steps: step 1, reacting carbon disulfide with trifluoroiodomethane and sulfur to generate (CF3-S-S-CF3); step 2, reacting (CF3-S-S-CF3) with mercury under illumination to obtain trifluoromethylthio mercury; 3, further oxidizing the trifluoromethylthio mercury and an oxidizingagent to generate trifluoromethanesulfonic acid monohydrate; 4, filtering the trifluoromethanesulfonic acid monohydrate to obtain a trifluoromethanesulfonic acid aqueous solution; and step 5, addingsufficient zinc into the trifluoromethanesulfonic acid aqueous solution, and heating and refluxing until the solution is neutral. Compared with an existing zinc trifluoromethanesulfonate production process, the preparation efficiency and the preparation purity of zinc trifluoromethanesulfonate can be effectively improved, the final product of zinc trifluoromethanesulfonate preparation is neutral,excessive influence on the outside is avoided, and recovery is convenient.

The invention provides a preparation method of an organic porous material. The preparation method includes the following steps that ion-like liquid and 2,4,6-trihydroxy-1,3,5-benzene trioxin are addedinto a reaction vessel, then a catalyst is added to be subjected to ultrasonic processing and mixing evenly, the reaction vessel is placed in liquid nitrogen to be frozen for 1-3 min, vacuumized to 0.01-1 pa, and sealed, and a product is obtained through a reaction for 24-72 h at 90-150 DEG C; the ion-like liquid is prepared from a hydrogen bond donor and a hydrogen bond receptor, and the hydrogen bond donor is one of carbamide and thiourea; the catalyst is one of scandium trifluoromethanesulfonate, europium trifluoromethanesulfonate, indium trifluoromethanesulfonate, ytterbium trifluoromethanesulfonate hydrate, yttrium trifluoromethanesulfonate, and zinc trifluoromethanesulfonate; the product is washed through a solvent, and filtered after Soxhlet extraction for 12-48 h; and the productis dried under the vacuum condition to obtain the organic porous material. According to the preparation method of the organic porous material, use of volatile and toxic organic solvents can be avoided, and environmental-friendly performance is improved.

The invention discloses a synthetic method of CMC-P (MAEDS-co-AA) polymer zwitter-ion hydrogel and a preparation method of the polymer zwitter-ion hydrogel. The preparation method comprises the following steps: taking carboxymethyl cellulose, acrylic acid and [2-(methylacryloyloxy) ethyl] dimethyl-(3-sulfopropyl) ammonium hydroxide as raw materials, dissolving, and carrying out thermal polymerization to synthesize the hydrogel electrolyte. After the hydrogel electrolyte is soaked in a zinc trifluoromethanesulfonate solution for one hour, the hydrogel electrolyte has the excellent ionic conductivity of 25.3 mS cm < 1 >. The obtained hydrogel electrolyte is assembled into a quasi-solid-state zinc ion hybrid capacitor for electrochemical performance testing, the current density is 0.25-20 A g <-1 > during testing, and the voltage range is 0.2-1.8 V. The preparation method is simple and convenient, the microstructure of the synthetic material is of a porous structure, and the assembled quasi-solid zinc ion hybrid capacitor shows excellent specific capacity and rate capability.

A composite catalyst for propiconazole cyclization reaction and a preparation method thereof are disclosed, the composite catalyst is prepared from the following raw materials in parts by weight: 1.5-3.5 parts of zinc trifluoromethanesulfonate, 0.8 to 2.2 parts of sodium trinitrobenzene sulfonate, 0.6 to 1.4 parts of sodium dichromate and 9.5-10.6 parts of a catalyst carrier; according to the preparation method disclosed by the invention, the zinc trifluoromethanesulfonate, the sodium trinitrobenzene sulfonate and the sodium dichromate are compounded together through the catalyst carrier to prepare the composite catalyst, and the composite catalyst is good in stability and excellent in performance, so that the reaction medium environment of the propiconazole cyclization reaction can be improved, the rate of the propiconazole cyclization reaction and the yield of a cyclization substance are increased, the recovery is convenient and thorough, no impurities can be brought to the subsequent bromination reaction, the yield of the bromination reaction is not affected, and the yield and purity of the final propiconazole original medicine are improved.

The invention provides synthesis method and application of an imidazole derivative. The method uses carbodiimide, hydrochloride salt of amino-acid ester, tertiary amine and zinc triflate in a catalytic amount to prepare 2-amino or imino substituted imidazole derivative. The synthesis method is scientific and rational, provides a general method for synthesis of an imidazole derivative with a variety of substituents, and can further synthesize more complex heterocyclic molecules, such as benzimidazole imidazolone. The method has the advantages of easily available raw materials, wide range of application, high separation yield, simple laboratory equipment and operations, is convenient for further development and application; and the synthesized products have potential applications in biology, pharmacy and materials.

The invention relates to a chemical synthesis method for an azithromycin intermediate. According to the chemical synthesis method for the azithromycin intermediate,erythromycin 6,9-imino ether is usedas a raw material and reduced by potassium borohydride and zinc trifluoromethanesulfonate, hydrolysis is assisted through IR.A-743 or ZXC-700 resin, and 9-deoxo-9-alpha-aza-9[alpha]-homoerythromycinA is obtained with a high yield.

The invention relates to preparation and application of a zinc negative electrode material of a novel aqueous zinc ion battery. The preparation method of the zinc negative electrode material comprises the following steps: dissolving polyvinyl chloride and zinc trifluoromethanesulfonate in a polar solvent at room temperature to form a precursor solution for preparing the electrode material; and blade-coating the precursor solution on the surface of a zinc metal substrate by using a simple blade-coating method to prepare the novel zinc negative electrode. A chlorine atom group in polyvinyl chloride can become an active site for guiding zinc deposition, uniform zinc deposition is induced, corrosion reaction is reduced, meanwhile, dendritic crystal formation can be inhibited, coulombic efficiency is improved, the electrochemical performance of a battery is improved, and the cycle life of the battery is prolonged.