52 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.

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 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 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 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 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.

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.

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 independently selected from alkyl or halogenated alkyl with a carbon atom number of 1-5, and R is selected from alkyl or halogenated alkyl with a carbon atom number of 1-5. 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.

The purpose of the present invention is to provide a polyamic acid composition containing a polyamic acid that has a suitable viscosity and is obtained by specifically using a cyclic ketone-based solvent as an organic solvent in which a diamine component and a tetracarboxylic acid dianhydride component undergo a satisfactory addition polymerization reaction.　The present invention is a polyamic acid composition containing an organic solvent and a polyamic acid that is the product of an addition reaction between a diamine component and a tetracarboxylic acid dianhydride component in the organic solvent, wherein the organic solvent includes a cyclic ketone-based solvent, and the diamine component includes a compound having one or more ether group, sulfone group, or trifluoromethyl group in each molecule. The diamine component more preferably includes an aromatic diamine compound that has an ether group and has three or more aromatic rings in each molecule. The tetracarboxylic acid dianhydride component more preferably includes a compound that has an aromatic ring and an ether group or ketone group as an aromatic ring linking group.

This invention discloses a method for constructing disulfide mimetic compounds for late cyclization of peptides. The disclosed method provides late cyclization via thioacetalization of peptides containing two cysteine ​​residues to form a thioacetal group. These bonds are stable under acidic, basic, and reducing conditions. A wide range of cyclic ketones, and even acetone, can be used as crosslinking agents in this reaction. Since trifluoroacetic acid (TFA) can function as both a catalyst and the sole solvent, most peptide sequences can be cyclized by the disclosed method. The disclosed method offers many advantages and merits, including the use of TFA as a robust catalyst and the sole required solvent, the readily available availability of acetone and a variety of cyclic ketones as reactants, good chemoselectivity and tolerance of natural peptides to this reaction, and the fact that the resulting crosslinks are structural mimetic compounds of disulfides.

A process for producing a C10-C18 dialkylcycloalkane, the process comprising: (i) subjecting a furfural compound, a furfuryl alcohol compound or a mixture of a furfural compound and a furfuryl alcohol compound to a reductive rearrangement reaction in the presence of water, hydrogen and a hydrogenation catalyst comprising a supported transition metal, to produce a reaction product comprising an active methylene group-containing cyclic ketone selected from the group consisting of cyclopentanone, substituted cyclopentanone, cyclohexanone or substituted cyclohexanone and mixtures thereof; (ii) reacting the active methylene group-containing cyclic ketone obtained in step (i) with a furfural compound in an aldol condensation reaction in the presence of a catalyst to produce a reaction product comprising an unsaturated C10-C18 oxygen-containing cyclic organic dimer and / or trimer compound; (iii) subjecting the unsaturated C10-C18 oxygen-containing cyclic organic dimer and / or trimer compound produced in step (ii) to a hydrogenation reaction in the presence of hydrogen and a hydrogenation catalyst to produce a saturated C10-C18 oxygen-containing cyclic organic dimer and / or trimer compound; and (iv) subjecting the saturated C10-C18 oxygen-containing cyclic organic dimer and / or trimer compound produced in step (iii) to a hydrodeoxygenation step in the presence of hydrogen and a hydrodeoxygenation catalyst to produce a hydrocarbon product comprising C10-C18 dialkyl cycloalkanes, wherein the reaction product of step (i) is subjected to an azeotropic distillation step (ia) to produce a distillate stream comprising a majority of the active methylene group-containing cyclic ketone and a bottoms stream comprising a majority of water and a fraction of the active methylene group-containing cyclic ketone, the cyclic ketone containing active methylene groups is recovered from the reaction product produced in step (i), wherein the distillate stream is used as a feed in step (ii).

The present application relates to a kind of encapsulated copper silicon-aluminum molecular sieve, the molecular sieve contains Lewis acid center and Bronsted acid center;Copper particles are encapsulated in silicon-aluminum molecular sieve crystal;The molar ratio of silicon, aluminum, copper is 1: (0.005-0.2) : (0.005-0.3). The preparation method of the encapsulated copper silicon-aluminum molecular sieve is: in the presence of aqueous solvent, proportioning mixing of silicon source, aluminum source, copper source, auxiliary agent, dispersing agent, alkaloid compound and alkali source, to obtain mixed system;The mixed system is hydrothermally treated, then after filtration, drying, calcination, reduction obtains encapsulated copper silicon-aluminum molecular sieve. The encapsulated copper silicon-aluminum molecular sieve is applied to the method for preparing cyclic ketone and cyclic enone directly from cyclic olefin, solve the problem of low conversion rate and high toxicity in the preparation of cyclic ketone and cyclic enone from cyclic olefin, improve the effective utilization rate of cyclic olefin and the production efficiency of product cyclic ketone and cyclic enone, reduce the cycle energy consumption of substrate cyclic olefin, so that production process is more economical.

The invention discloses a construction method of disulfide bond mimetics for later cyclization of peptides. The disclosed methods provide for late cyclization by thioacetalation of a peptide comprising two cysteine residues to form a thioacetal group. These bonds are all stable under acidic, alkaline and reducing conditions. The reaction may use a variety of cyclic ketones, even acetone, as cross-linking agents. Trifluoroacetic acid (TFA) alone can act as a catalyst and sole solvent, such that most of the peptide sequences are cyclized by the disclosed methods. The disclosed methods have numerous benefits and advantages, such as the fact that trifluoroacetic acid is used as a robust catalyst for the reaction and the sole solvent required, acetone and various cyclic ketones used as reactants are readily available, good chemoselectivity and good resistance of natural peptides to the reaction, and the fact that the resulting cross-links are structural mimetics of disulfide bonds.

The invention discloses a method for removing trace cyclopentadiene in 1, 3-pentadiene, which comprises the following steps: mixing a crude 1, 3-pentadiene product with a solution containing cyclic ketone compounds, alcohol and organic alkali to react, and rectifying to obtain alcohol-containing 1, 3-pentadiene and rectifying still liquid; and carrying out water washing and liquid separation on the alcohol-containing m-pentadiene to obtain the high-purity m-pentadiene and alcohol-containing wastewater. According to the method, the organic base is added for catalysis in the reaction process, no precipitate is generated in the reaction process, the reaction time is short, the removal degree of cyclopentadiene is high, and the treating agent can be recycled.

The invention relates to the field of electrocatalytic organic matter conversion, and discloses a method for preparing dicarboxylic acid and coupling hydrogen production through electrocatalytic oxidation of cyclic alcohol / cyclic ketone, and the method comprises the following steps: taking a transition metal hydroxide nano electrocatalyst as an anode and a cathode catalyst as a cathode, performing electrocatalytic oxidation on an electrolyte solution containing cyclic alcohol and / or cyclic ketone, dicarboxylic acid is obtained; the transition metal hydroxide nano electrocatalyst comprises a transition metal hydroxide nano material and a conductive substrate, transition metal elements of the transition metal hydroxide nanometer material comprise nickel and at least one of manganese, vanadium and copper. According to the invention, cyclic alcohol / cyclic ketone oxidation with high Faraday efficiency under high current density can be realized in a wide voltage range at room temperature and normal pressure, the oxygen evolution side reaction of an anode is inhibited, the energy utilization efficiency is improved, and hydrogen is produced by coupling at a cathode while no oxynitride waste gas is discharged.