35 results about "Tetrazole" patented technology

The invention discloses a novel synthetic method for 5-phenyl tetrazole, which includes the following steps: firstly performing acid neutralization to hydrazine hydrate; then adding mixing solution formed by cyanobenzene, water and ethyl alcohol to generate phenyl aminoguanidine salt; adopting sodium nitrite for diazotization to obtain nitrine amidine under the acidic condition; obtaining 5-phenyl tetrazole crude product through closed loop under the alkaline condition; obtaining 5-phenyl tetrazole acceptable product through adopting ethyl alcohol for refining. The method has the advantages of simple technology, simplicity in operation and high product yield.

This invention discloses a method for synthesizing cefotiam, using 7-aminocephalosporanic acid (7-ACA) as the parent nucleus and introducing a 4-dimethylaminopyridine-dimethyl carbonate composite catalytic system. The reaction is carried out in a one-pot process involving 3-position nucleophilic substitution, 7-position amidation, and simultaneous deprotection in a green mixed solvent of ionic liquid [BMIM]BF₄-water with 1-(2-dimethylaminoethyl)-1H-5-mercapto-tetrazole and compound I. This method simplifies the process, improves selectivity, produces a high-purity product with stable yield, and is suitable for industrial production.

Substituted tetrazoles of formula I-a, I-b, or I-c:or a pharmaceutically acceptable salt, deuteroisotope, stereoisomer or tautomer thereof; useful as ACSS2 inhibitors are provided.

Provided are a method for processing a semiconductor substrate, a method for manufacturing a semiconductor device, and a processing solution for a semiconductor device usable therefor, in which: a processing step of processing a semiconductor substrate including a layer containing a metal nitride with a processing solution for a semiconductor device is included; the processing solution for a semiconductor device contains NH3, a corrosion inhibitor, and water; the corrosion inhibitor is at least one selected from the group consisting of 5-methyl-1H-benzotriazole, imidazole, and 5-amino-1H-tetrazole; and a mass ratio of a content of NH3 to a content of the corrosion inhibitor (NH3 / corrosion inhibitor) is 5 to 60.

The instant invention relates to a method for treating a surface of a metal, a metal alloy or a metal oxide by contacting the at least one section of said metal, metal alloy or metal oxide with an alkaline aqueous precoat solution comprising one or more than one tetrazole and / or triazole in combination with an acidic cleaning step which is performed either prior to or following the precoat step. It has surprisingly been found that when such pretreated surfaces are subsequently contacted with triazine compounds that the surfaces exhibit an improved resistance to delamination under thermal, humidity, and chemical stress conditions. This is demonstrated by increased adhesion strength and wedge void reduction.

The instant invention relates to a method for treating a surface of a metal, a metal alloy or a metal oxide by contacting the at least one section of said metal, metal alloy or metal oxide with an acidic aqueous precoat solution comprising one or more than one tetrazole and / or triazole in combination with an acidic cleaning step which is performed either prior to or following the precoat step. It has surprisingly been found that when such pretreated surfaces are subsequently contacted with triazine compounds that the surfaces exhibit an improved resistance to delamination under thermal, humidity, and chemical stress condi- tions. This is demonstrated by increased adhesion strength and wedge void reduction.

Provided herein are polymorphs of (R)—N-(5-(5-isopropyl-1,2,4-oxadiazol-3-yl)-2,3-dihydro-1H-inden-1-yl)-2-methyl-2H-tetrazole-5-carboxamide, compositions thereof, methods of preparation thereof, and methods of their uses.

This invention relates to the field of resource recycling technology, specifically disclosing a system and method for extracting and recovering metals from etching waste liquid. The extractant combination of this invention can minimize the loss of etching aids, preserve the original composition of the etching liquid, and allow the etching liquid to be completely reused after reducing copper, molybdenum, and other metal ions. The extractant of this invention has a long effective life cycle of extraction-back-extraction, minimal loss of extractant aids in the extraction-back-extraction cycle, and no emulsification / flocculation of the extract phase during the extraction process. The extraction rate of copper and molybdenum in the etching liquid is high. By using a specific three-phase extractant combination, more than 98% of copper and molybdenum in the waste liquid can be recovered. The copper extraction process has a good retention effect on nitrogen azole etching aids, such as 5-aminotetrazole, thereby forming a closed loop in the extraction-back-extraction cycle of the etching liquid, reducing material input and pollution.

The application discloses a kind of nitrogen-rich high-energy anti-perovskite materials and preparation method thereof, respectively with nitrogen-rich compound 5,5-bis-tetrazole and 3,5-dinitramino-1,2,4-triazole as negative divalent ion and negative monovalent ion component raw material, with hydroxylamine as positive monovalent ion component raw material, three components are integrated by ionization reaction, and nitrogen-rich anti-perovskite material ANP-1 is obtained.The synthesis method of the application has the characteristics of easy to obtain raw materials, simple operation, high safety, high yield and the like.

The application relates to the field of photocatalytic hydrogen evolution and relates to a preparation method and application of a copper-phosphotungstic acid hybrid functional material. The application aims to solve the problems of existing polyacid materials, such as easy recombination of photo-generated electron holes, insufficient photocatalytic hydrogen evolution activity and high cost of photocatalysts. The patent designs and develops a copper-phosphotungstic acid hybrid functional material, and the method comprises the following steps: taking phosphotungstic acid, copper chloride and 5-(2-pyridyl)tetrazole as raw materials, dissolving, adjusting pH, carrying out hydrothermal reaction and stepwise temperature reduction treatment, and obtaining blue-green rectangular block-shaped crystals. When the material is used in a water / acetone (1 / 2) solution and a 500 W xenon lamp light irradiation condition and triethanolamine is used as a sacrificial agent, the photocatalytic hydrogen evolution rate can reach 3983 mu mol g-1 h-1, the three-dimensional hybrid structure has excellent charge separation efficiency and stability, and the application demand of photocatalytic hydrogen evolution can be met.

This invention belongs to the field of biomedical technology, specifically disclosing a method for preparing a novel tetrazolium MOF-based photodynamic antibacterial dressing and its applications. The dressing is a Cd-MOF-D crystal with the chemical formula (C8H4Cd1Cl1N8). n Orthorhombic crystal system, space group Imma, cell parameters α=β=γ=90°, a=23.4459(13)Å, b=7.5964(4)Å, c=14.1731(9)Å, Z=4; Cd-MOF-H crystal, chemical formula (C 16 H 16 Cd2N 16 O4)n·6(H2O), monoclinic crystal system, space group P21 / n, with crystallographic parameters α=γ=90°, β=96.229(2)°, a=9.462Å, b=8.251Å, c=17.563Å, Z=4. In this disclosure, crystal transformation is achieved through regulation, thereby promoting the release of the contents and achieving a good sustained-release effect in a short period of time.

The application provides a general energetic burning rate catalyst, a preparation method and application, and has a chemical structural formula: sodium azotetrazole salt is dissolved in distilled water and dimethyl sulfoxide to form a reaction solution, palladium acetate is added into the reaction solution, stirring is carried out at room temperature until the reaction solution is clear; then the reaction is sealed and placed at 105 DEG C, after the completion of the placement, the reaction is completed by cooling to room temperature, then filtration is carried out, and the filtrate is filtered out, and the obtained is the general energetic burning rate catalyst. The burning rate catalyst realizes the true "general type", the addition amount is only 2 wt.%, and the catalyst has excellent catalytic effect on five kinds of currently active energetic materials, and is a truly "general type" energetic burning rate catalyst.

The present invention provides a method for processing a semiconductor substrate, a method for manufacturing a semiconductor device, and a processing solution for a semiconductor device, all of which offer excellent removal capabilities for metal nitrides and corrosion protection of the metal layer. [Solution] The present invention provides a method for processing a semiconductor substrate, a method for manufacturing a semiconductor device, and a semiconductor device processing solution usable for these, comprising a processing step of processing a semiconductor substrate having a layer containing a metal nitride with a semiconductor device processing solution; wherein the semiconductor device processing solution contains NH3, a corrosion inhibitor, and water, and the corrosion inhibitor is at least one selected from the group consisting of 5-methyl-1H-benzotriazole, imidazole, and 5-amino-1H-tetrazole, and the mass ratio of the content of NH3 to the content of the corrosion inhibitor (NH3 / corrosion inhibitor) is 5 to 60.

This invention belongs to the field of organic chemical synthesis, specifically relating to a method for stabilizing tetrazolium using a metal-organic cage. The method includes the following steps: placing a pentagonal tritetrahedral metal-organic cage in acetonitrile solvent to form a mixture; then placing the mixture in a sealed container (such as a hydrothermal reactor or a hard glass tube) and heating it at 100°C for 72 hours under solvothermal conditions, followed by slow cooling to obtain the tetrazolium compound. The preparation method provided by this invention is simple and easy to control. It utilizes the azide groups in the metal-organic cage structure to synthesize tetrazolium in situ. Simultaneously, the metal-organic cage can stabilize energetic tetrazolium molecules, avoiding the risk of explosion due to collisions during transportation and storage. This has significant implications for expanding the synthesis and storage of tetrazolium and similar energetic molecules.

The objective is to provide novel heterocyclic compounds and methods for producing the same. [Solution] A heterocyclic compound represented by the following general formula (1) is provided, where R 2 is a monovalent hydrocarbon group or hydrogen atom, and R 3 X is a hydrogen atom, a methyl group, or an ethyl group, X is a triazole or tetrazole structure represented by the following formula (2), and Y is a sulfur atom or an NH group, and in general formula (2), R 1 This is a monovalent hydrocarbon group or a hydrogen atom. JPEG2026086780000025.jpg87170

The application discloses a method for preparing spherical zinc azotetrazolate, wherein a bottom liquid and zinc azotetrazolate particles with a certain particle size are added into a container as seed crystals, a zinc salt solution and a sodium azotetrazolate solution are stirred and added at a certain temperature, and the spherical zinc azotetrazolate is obtained after a reaction for a period of time. The method does not need to introduce an additional crystal form control agent, and the PH of the solution is controlled to control crystallization. The obtained zinc azotetrazolate particles present a spherical shape, and the flowability and the loose bulk density are greatly improved. By controlling the particle size of the added seed crystals, the preparation of large-particle spherical zinc azotetrazolate with a particle size in the range of 80-200 mu m can be realized.

The application discloses a wet-winding water-resistant cable and a production process thereof, and the cable comprises a cable conductor, a semi-conductive layer, an insulating layer and a waterproof sheath material arranged in sequence; components of the insulating layer comprise ethylene-vinyl acetate copolymer, tri (methacrylic acid) trimethylolpropane ester, pyrazole 1, 3, 5-triazine and / or 6, 8-diamino-7-nitro-tetrazol [1, 5-b] pyridazine, an absorption type light stabilizer, a polymer of succinic acid and 4-hydroxy-2, 2, 6, 6-tetramethyl-1-piperidinol and the like; components of the semi-conductive layer comprise ethylene-butyl acrylate copolymer, metal organic framework modified conductive carbon black, graphene oxide powder, trimethylolpropane and the like. The insulating layer material adopted by the application has excellent radiation resistance, insulation, heat resistance, mechanical properties and water tree resistance, and only 2.0 mm can reach the standard strength, and the semi-conductive layer and the waterproof sheath material with excellent water resistance are assembled to have a good shielding effect, so that the cable of the application can meet the working environment requirements in the wet-winding motor nuclear main pump.

The present application relates to a kind of core-shell structure five-core copper (I) complex and its preparation method and application, the molecular formula of the core-shell structure five-core copper (I) complex is [C 112 H 82 Cu5S4N 22 P4]PF6, molecular weight is 2469.78, its preparation method includes: pyridine and imidazole bisphosphine ligand L and auxiliary ligand 1-phenyl-1H-tetrazole-5-thiol are added to the mixed solvent of CH2Cl2 And CH3OH, stirring is uniformly obtained mixed solution;[Cu (CH3CN) 4]PF6 is added to mixed solution, filter after stirring at room temperature to culture bottle, the filtrate is slowly volatilized in culture bottle at room temperature, obtain transparent light yellow crystal;The obtained crystal is washed with anhydrous ethanol and vacuum dried, and the core-shell structure five-core copper (I) complex is obtained.The preparation method of the present application has mild conditions, and the preparation process is simple, and the operation is simple, and it can be prepared at room temperature.The obtained core-shell structure five-core copper (I) complex has excellent luminescent performance, and is an excellent orange phosphor material.

The application discloses a method for photoelectrocatalytic green synthesis of nitrogen-containing heterocyclic azo compounds, and uses a composite electrode with a cobalt tetraoxide@nickel molybdate modified layer loaded on a substrate as a working electrode, and an alkaline solution of 5-amino tetrazole as an electrolyte, and performs a catalytic reaction under the condition of simultaneously applying an external bias and visible light irradiation, and finally obtains a target product through post-treatment. The method breaks through the technical bottleneck of the existing synthesis route by using photo-electricity synergistic catalysis, and provides a brand-new technical path for green, safe and efficient preparation of energetic compounds.

A synergistic insecticidal composition comprising (A) isothiazolyl amide; (B) one insecticide selected from the group consisting of chlorantraniliprole, cyantraniliprole, cyclaniliprole, tetraniliprole, pyridalyl, pymetrozine, chlorfenapyr, sulfoxaflor, flubrocythrinate, sulfoxaflor; and (C) one or more insecticides selected from the given list. The invention also relates to a process for the preparation of said composition in specific amounts. The invention also relates to a process for the preparation of said composition together with at least one formulation excipient, and to the formulation of said composition. The invention also relates to a synergistic composition, wherein the active ingredients present in fixed amounts exhibit a synergistic effect in terms of insecticidal activity.

The application provides a two-dosage-form copper etching liquid and a preparation method thereof, and belongs to the technical field of copper etching liquids, and comprises the following steps: mixing deionized water, ethylene glycol monobutyl ether and a hydrogen peroxide aqueous solution to obtain an A agent; mixing and reacting deionized water, a glucose acid aqueous solution, aminotri (methylenephosphonic acid), lactic acid, triisopropanolamine, gamma-glycidyl ether oxypropyl trimethoxysilane and aluminum lactate to obtain an aluminum-containing hybrid precursor; adding a first phosphoric acid aqueous solution, methanesulfonic acid and lactic acid into the aluminum-containing hybrid precursor, and then adding triisopropanolamine, a second phosphoric acid aqueous solution, 5-amino tetrazole and deionized water, and performing aging and filtration to obtain a B agent; and mixing the A agent, the B agent and deionized water to obtain the two-dosage-form copper etching liquid. The application can improve the storage stability, etching uniformity and copper surface flatness of the etching liquid.