74 results about "Cyclic ketone" patented technology

The invention belongs to the field of chemical engineering manufacturing industry, and relates to equipment and a method for producing cyclic ketone compounds by oxidizing cycloolefin by using waste gas produced by adipic acid. Raw material gas A containing nitrous oxide from an adipic acid production process production line can be subjected to oxygen removal, so that the oxygen content is less than 100ppm; the raw material gas A containing nitrous oxide from the adipic acid production line can also be purified into purer gas containing 50-99% of N2O, and the purer gas is used for reacting with the cycloolefin compound; the reaction equation is CnH2n-2 (cycloolefin) + N2O (nitrous oxide)-> CnH2n-2O (a product cyclic ketone compound) + a byproduct + N2 superscript (nitrogen), wherein n is a positive integer from 4 to 24. The device is stable in consumption quota, low in production cost and high in economic benefit compared with the prior art.

The invention provides a solvent-free polyaspartic acid ester polyurea floor coating and a preparation method thereof, the coating comprises a main agent and a curing agent, the main agent comprises polyaspartic acid ester resin, a functional auxiliary agent and a pigment filler; the functional auxiliary agent comprises a dispersing agent, a defoaming agent, a flatting agent, a water absorbent and a coupling agent, and the pigment filler comprises pigment and filler; the curing agent comprises a hydroxyl cyclic ketone compound modified polyisocyanate composition. By optimizing and modifying the components in the radix asparagi polyurea coating, a terrace material can be endowed with excellent properties in the aspects of rapid curing, high-humidity constructability, performance retention rate after curing, leveling wettability, good adhesive force with various coating substrates, high and low temperature resistance, high strength and the like, and the comprehensive performance is excellent; the method is suitable for different terrace application fields.

This two-component type room temperature rapid-curable resin composition comprises, at a specific ratio: a first agent containing, at a specific ratio, (A) an organic polymer in which the molecule chain terminals are blocked by a hydrolysable silyl group and / or a hydroxyl silyl group, and in which an organopolysiloxane structure is not included in the polymer main chain, (B) a hydrolyzable organosilane compound represented by formula (1) (in formula (1), R1 represents a monovalent hydrocarbon group, n represents 1-8, and m represents 3 or 4) and / or a partial hydrolysis condensate thereof, and (C) a curing catalyst; and a second agent containing (A') an organic polymer in which the molecule chain terminals are blocked by a hydrolysable silyl group and / or a hydroxyl silyl group, and in which an organopolysiloxane structure is not included in the polymer main chain. The two-component type room temperature rapid-curable resin composition has excellent rapid curability and deep curability, provides fine workability, and, when being cured, causes elimination / release of a cyclic ketone compound such as cyclobutanone and cyclopentanone as a leaving group (elimination compound). Thus, the composition solves problems regarding safety and hazardous properties with respect to human and the environment.

An object of the present invention is to provide a chemical liquid which makes it possible to form a thinner resist film having a uniform thickness on a substrate by using a small amount of resist composition and demonstrates excellent defect inhibition performance. Another object of the present invention is to provide a pattern forming method. A chemical liquid of the present invention contains a mixture of two or more kinds of organic solvents, in which the organic solvents are selected from the group consisting of compounds represented by Formulae (1) to (7), compounds represented by Formulae (9) to (11), a 3- to 5-membered cyclic ketone compound that may have a substituent, a cyclic ketone compound with 6 or more members that may have a substituent, a lactone compound, and a lactam compound, the chemical liquid contains or does not contain an ether-based compound other than the compounds represented by Formula (1), Formula (5), Formula (7), and Formulae (9) to (11), and in a case where the chemical liquid contains the ether-based compound, a content of the ether-based compound in the chemical liquid is less than 10 mass ppm with respect to a total mass of the chemical liquid.

The invention discloses a preparation method of cyclic ketone. The invention provides a preparation method of a compound as shown in a formula C. The preparation method comprises the following steps: (1) in the presence of metal salt, carrying out n-th thermal rearrangement reaction on a compound as shown in a formula B to obtain the compound as shown in the formula C; after the reaction is finished, enriching metal salt; (2) adding a compound as shown in a formula B into the reaction system in the previous step, and carrying out (n + 1) th thermal rearrangement reaction to obtain a compound as shown in a formula C; after the reaction is finished, enriching metal salt; and (3) repeating the step (2) for m times. The preparation method has the advantages of high efficiency, simplicity, convenience, high catalytic efficiency, invariable yield and purity during repeated application, mild reaction conditions, less three wastes and industrial production prospect.

This invention provides a method and system for removing waxy substances from the washing water of product gas in an MTO (Methanol-to-Olefins) unit, belonging to the field of methanol-to-olefins technology. The method includes: introducing product gas into a separation tower for countercurrent contact with washing water; introducing the washing water from the middle and bottom sections of the separation tower into a first membrane extraction separator and a second membrane extraction separator, respectively, for membrane extraction with an extractant; after extraction, part of the washing water is discharged, and the remaining heat is recovered and returned to the separation tower; the extractant is regenerated in a solvent regeneration tower and recycled. The membrane extraction separator integrates impinging flow mixing, ultrasonic-enhanced mass transfer, and inorganic membrane extraction functions. The extractant is a mixture of aromatic esters, nitro aromatic compounds, and phenyl cyclic ketone compounds, or a mixture of pyridyl ionic liquid and phenyl cyclic ketone compounds. This invention can efficiently remove waxy substances from the washing water, reduce extractant loss and COD, and the extractant is easily regenerated, ensuring long-term stable operation of the unit.

This invention discloses a method for synthesizing a full-carbon quaternary carbocyclic ketone-spirocyclic pseudoindole derivative. This method uses a metal carbonyl compound as a safe carbonyl source and involves a catalytic cycle from zero-valent palladium to divalent palladium. Specifically, it involves the oxidative addition of palladium(O) via a carbon-halogen bond, the coordination and migration insertion of CO to form a carbonyl palladium species, followed by nucleophilic attack of the indole C3 ring to achieve dearomatization of the indole ring, and then reductive elimination to obtain the full-carbon quaternary carbocyclic ketone-spirocyclic pseudoindole derivative. Specifically, compound 1 and the metal carbonyl compound Co2(CO)8 are reacted under heating conditions with palladium as a catalyst, organophosphine as a ligand, and sodium salt as a base to obtain the full-carbon quaternary carbocyclic ketone-spirocyclic pseudoindole molecule. This method is a novel synthetic method for full-carbon quaternary carbocyclic ketone-spirocyclic pseudoindole derivatives, solving the problems of existing technologies such as the need for multiple reaction steps, harsh reaction conditions, narrow substrate range, and high toxicity of starting materials.

The invention discloses a method for cross coupling of aromatic aldehyde and cyclic ketone through electrochemical catalysis and application of the method, and belongs to the technical field of electrochemical synthesis.The method comprises the following steps that a three-electrode system is adopted, a cathode chamber and an anode chamber of the three-electrode system are separated by a proton exchange membrane, electrolyte of the cathode chamber is the same as electrolyte of the anode chamber, and the proton exchange membrane is a proton exchange membrane; a working electrode and a reference electrode are arranged in a cathode chamber, a counter electrode is arranged in an anode chamber, foamed nickel loaded with Pd-HSiW ZIF-67 is used as the working electrode, Ag / AgCl is used as the reference electrode, a platinum electrode is used as the counter electrode, and in the cathode chamber, aromatic aldehyde and cyclic ketone are subjected to an electrochemical catalysis cross-coupling reaction to synthesize a target product. The Pd-HSiW ZIF-67 is used as an active catalyst component and has high catalytic activity and good stability and reusability. The method has the advantages of mild reaction conditions, effective reduction of side reactions, substantial improvement of the selectivity and yield of the target product, and suitableness for industrial amplification production.

A food with an extended shelf-life and a method of extending shelf-life of food is provided herein. The extended shelf-life is provided by treating the food with at least one shelf-life extender selected from a group consisting of an isothiocyanate, a non-aromatic cyclic ketone, a boronic acid, a ligand and their precursors.

The invention provides an electrolyte additive and application, the electrolyte additive comprises a compound with a structure shown in a formula 1, X and Y are respectively and independently selected from R1 and R2, and are respectively and independently selected from a single bond, substituted or unsubstituted-CH2-and substituted or unsubstituted-CH2-CH2-. The electrolyte additive disclosed by the invention contains the compound with the structure as shown in the formula 1, and the keto-carbonyl group can be coordinated with metal ions in electrolyte salt, so that the additive can move to the surface of an electrode along with current to generate electrochemical reaction on the surface of the electrode; in addition, an open ring of a cyclic ketone structure is polymerized and crosslinked with organic matters in the battery or self to form a double-electrolyte salt organic film with good stability, high structural strength and good ion permeability, so that the high-temperature storage and high-temperature cycle performance of the battery is improved.

A food with an extended shelf-life and a method of extending shelf-life of food is provided herein. The extended shelf-life is provided by treating the food with at least one shelf-life extender selected from a group consisting of an isothiocyanate, a non-aromatic cyclic ketone, a boronic acid and a ligand.

A tetra-aza corand compound of formula (Ia) and compound of formula (Ib) and salts thereof. The tetra-aza corand of formula (Ia) and (Ib) of the present invention relates to novel corand entity having a substantially enclosed volume and a framework structure, the compounds are designed as therapeutic carriers for molecule therapeutics delivery and pharmaceutical compositions thereof.

The invention relates to the technical field of molecular sieve synthesis, and discloses a Sn-Y type molecular sieve, a preparation method and application thereof, and a cyclic ketone oxidation reaction method, the surface silicon-tin molar ratio of the molecular sieve is 50-70, and the bulk phase silicon-tin molar ratio is 200-300. According to the Sn-Y type molecular sieve provided by the invention, Sn is mainly and intensively distributed on the outer surface of the Y molecular sieve, so that the Sn-Y type molecular sieve has better catalytic performance on Baeyer-Villiger oxidation reaction of cyclic ketone.

The application belongs to the technical field of photocatalytic synthesis, and particularly relates to a preparation method of a medium ring cyclic ketone compound by using a cerium catalytic system. The application directly and efficiently synthesizes a medium ring cyclic ketone compound with five to ten members by using a cerium catalyst, a cocatalyst and an additive in combination, starting from a fused tertiary alcohol substrate. The preparation method provided by the application has a wide application range of substrates, and can be used to synthesize a series of medium ring cyclic ketone compounds with different functional groups. The high selectivity of the cerium catalytic system is used to ensure high-purity output of the medium ring cyclic ketone compound, and a purification step is simplified.

The invention provides a cyclic ketone compound and a medical effect thereof, and belongs to the technical field of anesthetic drugs. The cyclic ketone compound is a compound as shown in a formula (I), or a stereoisomer thereof, or a deuterated derivative thereof, or a prodrug thereof, or a salt thereof, or a solvate thereof. It is found that the cyclic ketone compound and the prodrug thereof can significantly improve respiratory depression caused by anesthesia and / or sedative, and can improve the respiratory function in inhalation general anesthesia retaining spontaneous respiration; meanwhile, compared with sodium camphorsulfonate and oxycamphor, the compound disclosed by the invention can obviously improve respiratory depression induced by opioids at a lower dosage, the minimum dosage for inducing adverse reactions is higher, and the safety is better. The invention has a good improvement effect on respiratory depression caused by opioids and inhalation anesthetics, provides a new solution for respiratory depression caused by clinical anesthesia, and has a wide application prospect.

The invention discloses a method for refining polymer-grade m-pentadiene. The method comprises the following steps: carrying out selective hydrogenation reaction on a crude m-pentadiene material to remove alkyne so as to obtain an alkyne-removed m-pentadiene intermediate material; mixing the deacetylated m-pentadiene intermediate material with cyclic ketone, alcohol and organic alkali, and carrying out reactive distillation to remove cyclopentadiene so as to obtain decyclized m-pentadiene; and refining and purifying the decyclized m-pentadiene through water washing and extractive distillation to obtain the decyclized m-pentadiene. The obtained polymer-grade pentadiene product is high in purity, the content of impurity cyclopentadiene in the polymer-grade pentadiene product is lower than 1ppm, and the content of impurity alkyne in the polymer-grade pentadiene product is lower than 20ppm.

The present invention relates to an improved Bayer-Villiger oxidation process of cyclic ketones to lactones in the presence of oxygen and an aldehyde.

The application discloses a method for preparing high-tension four-membered ring alkane fuel by one-pot method of cyclic ketone or cyclic alcohol and application of the fuel, wherein the fuel synthesis process is as follows: wherein n=1 or 2, 3, R1, R2, R3, R4, R5 and R6=H or-CH3 or-CH2CH3; the four-membered ring fuel matrix is prepared by one-pot method of oxidation / [2+2] cycloaddition of biomass-derived cyclic ketone or cyclic alcohol in the presence of an oxidant and a light source, the reaction temperature of the process is 0-80 DEG C, the reaction time is 12-36h, and the fuel matrix is obtained by reaction, and the yield is about 95%. The raw material of the application has low price, the reaction condition is mild, the synthesis cost is low, and the post-treatment is simple; the four-membered ring alkane fuel has excellent performances of high density, high calorific value and low freezing point.

This invention discloses a method for synthesizing lactone compounds and cerium-catalyzed lactone compounds. The synthesis method comprises the following steps: under visible light irradiation, in an oxygen atmosphere, and in the presence of a photocatalyst and a cerium catalyst, a cyclic ketone compound containing a structural fragment as shown in Formula II is subjected to a cyclization reaction in a solvent to obtain a lactone compound containing a structural fragment as shown in Formula I. This method uses readily available raw materials to conveniently and rapidly synthesize various medium- and large-cyclic lactones, and is simple, economical, and environmentally friendly.

A Sn-Beta molecular sieve, a preparation method therefor and a use thereof, and an oxidation reaction method for a cyclic ketone. The silicon-to-tin molar ratio of the molecular sieve is 8-15, and the molecular sieve has a Lewis acid content of 600-900 μmol / g as measured by pyridine infrared spectroscopy at a desorption temperature of 200°C. The Sn-Beta molecular sieve has high Sn content and high Lewis acid content, and has excellent catalytic performance for Baeyer-Villiger oxidation reaction of cyclic ketones.

A method of extending shelf-life of food is provided herein. The extended shelf-life is provided by treating the food with at least one shelf-life extender selected from a group consisting of an isothiocyanate, a non-aromatic cyclic ketone, a boronic acid and a ligand.

The invention relates to a compound of the following formula I: formula (I) or one of the enantiomers, isomers or diastereoisomers of same, or a mixture thereof, wherein R is a linear or cyclic C3-C6 alkyl, comprising two hydroxyl functions, a linear or cyclic C3-C6 aldehyde, comprising two hydroxyl functions, or a linear or cyclic C3-C6 ketone, comprising two hydroxyl functions, and wherein R1 is a C1-C3 alkyl, or a salt, or a solvate thereof.

The present invention relates to polymerizable liquid crystalline formulations and especially to an ink formulation for inkjet printing comprising 10 to 50% w / w of one or more polymerizable liquid crystalline compounds and 50 to 90% w / w of one or more organic solvents selected from the group of aliphatic ketones, cyclic ketones, alkyl ethers of ethylene glycol or propylene glycol, alkyl esters of menthyl or aromatic solvents.

The invention relates to the technical field of ion exchange membranes, in particular to a high-strength self-supporting or enhanced poly (arylene-quinine salt) anion exchange membrane and a preparation method thereof. 3-quinuclidinone or salt or hydrate thereof, halogenated ketone or aldehyde and an aromatic compound are mixed to obtain a polymeric monomer system; adding a first organic solvent and organic strong acid for catalytic polycondensation; dropwise adding into a first precipitant, filtering and drying; dissolving in a second organic solvent, and adding an ionization reagent; adding a second precipitant, filtering and drying; dissolving in a third organic solvent; and coating on a homogeneous substrate or a porous substrate, and drying to obtain the self-supporting or enhanced poly (arylene-quinine salt) anion exchange membrane. The high molecular weight of the polymer is improved through copolymerization with high-activity halogenated ketone or aldehyde, a cross-linked network is further constructed during coating, and the obtained poly (arylene-quinine salt) anion exchange membrane shows high mechanical strength, high alkali resistance, good ionic conductivity and outstanding gas barrier property.

The present invention relates to a salt recovery solution and to a process for separating a salt from an aqueous solution. The present disclosure also relates to a salt recovery solution and to its use to concentrate a salt or brine solution by recovering water therefrom. The salt recovery solution comprising at least two or more components independently selected from any combination of integers a), b), c) and d): where a) is a straight, branched or optionally substituted cyclic C4-C9 ether containing compound; b) is a straight chain or branched C3-C9 alkyl substituted by —OH; c) is a straight chain, branched or cyclic C4-C9 ketone or C4-C9 diketone; and d) is a straight chain or branched C3-C9 ester containing compound.

An oral care composition is provided and includes a hops extract, where the hops extract includes dimethyl disulfide, a stannous ion source, and a stabilizing system including a Michael acceptor. The Michael acceptor has an alpha, beta-unsaturated carbonyl group. The alpha, beta-unsaturated carbonyl group can include an aldehyde, a ketone, a cyclic ketone, or a combination thereof.

The application discloses a method for preparing mixed hydrogen natural gas and cyclic ketone compounds based on a water-phase reforming system, which comprises the following steps: adding a CeO2 or ZrO2 or TiO2 supported Ni-based catalyst into a reaction kettle, adding cellulose and water, controlling the mass of the cellulose to be 0.4-0.5% of the mass of the water, sealing the reaction kettle, replacing the air in the reaction kettle, and reacting at a temperature of 230-250 DEG C under a pressure of 0.1-1 MPa for 2-4 h; after the reaction is completed, the mixed hydrogen natural gas is obtained in the gas component, and the cyclic ketone compounds are obtained in the liquid phase. The method realizes that the gasification C accounts for >99% of the proportion of the raw material C, the yield of the mixed hydrogen natural gas can reach 94.3%, and the selectivity of the mixed hydrogen natural gas can reach 71%. The method has the advantages of high efficiency, low cost and environmental protection, and has important values for the high-value utilization of cellulose and the development of environmental protection energy.

To provide a polyimide precursor composition that enables efficient formation of an intermediate molded body for forming a polyimide molded body through heating at a relatively low temperature.SOLUTION: A polyimide precursor composition comprises a polyimide precursor and an organic solvent that is at least one of a cyclic ketone and a cyclic ether. The polyimide precursor includes a structural unit represented by formula (I). At least one of X1 and X2 includes a group represented by formula (10).SELECTED DRAWING: None

The invention discloses a chiral thiourea carboxylic acid zirconium-based metal organic framework material as well as a preparation method and application thereof. The chiral thiourea carboxylic acid pickaxe-based metal organic framework material adopts a solvothermal synthesis method and comprises the following operation steps: preparing a thiourea-containing zirconium-based metal organic framework material from biphenyldicarboxylic acid, (S)-2-(3-(pyrrolidine-2-yl methyl) thiourea-[1, 1 '-biphenyl]-4, 4'-dicarboxylic acid and zircon salt; the prepared metal organic framework material has a relatively high specific surface area (BET specific surface area is 772 m < 2 > / g), and the adsorption capacity of CO2 under 1atm and 273 K reaches 58.0 cm < 3 > / g. The chiral thiourea carboxylic acid zirconium-based metal organic framework material is used as a catalyst for asymmetric Michael addition reaction of nitroolefin and cyclic ketone compounds, has the advantages of high catalytic activity, high dr value proportion, high ee value of a product, good stability and the like, and is mild in reaction condition, convenient to operate and wide in substrate applicability. The catalyst is recycled for 3 times, the yield is slightly reduced, the dr and ee values are almost unchanged, and the catalyst is a good heterogeneous chiral catalyst.

The invention discloses a method for preparing dinitrile compounds from cyclic ketone compounds, and belongs to the technical field of cyclic ketone compound synthesis. The method for preparing the dinitrile compound by using the cyclic ketone compound comprises the following steps: mixing the cyclic ketone compound, ammonia water, a Cu-based catalyst, a 1, 10-phenanthroline ligand and a solvent, and then carrying out ammoxidation reaction in an oxygen atmosphere to obtain the dinitrile compound. The method provided by the invention has the advantages of simple preparation process, high yield, mild reaction conditions, cheap and easily available raw materials and no use of noble metals, and provides an efficient, environment-friendly and low-cost synthetic route for the production of dinitrile compounds.