100 results about "Cyclic ketone" patented technology

The invention discloses an aqueous zinc ion battery electrolyte as well as a preparation method and application thereof, and relates to the technical field of electrolytes. The electrolyte is modified by adding the cyclic ketone small-molecule additive into zinc sulfate, growth of zinc dendrites on the surface of the zinc negative electrode and hydrogen evolution reaction can be effectively inhibited, so that the problems of zinc corrosion and zinc negative electrode passivation are relieved, the mechanism of improving the stability of the zinc negative electrode by the quantity and position of zinc-philic functional group carbonyl is discussed, and the stability of the zinc negative electrode is improved. Experiments prove that the zinc ion battery prepared from the electrolyte successfully constructs the aqueous zinc ion battery with high performance and long cycle stability.

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 belongs to the technical field of biological catalysis, and particularly relates to application of R-transaminase and a mutant thereof in asymmetric synthesis of chiral amine compounds. The amino acid sequence of the R-transaminase is as shown in SEQ ID NO. 1. The amino acid sequences of the R-transaminase mutants are respectively shown as SEQ ID NO: 2 (G66L), 3 (F127A), 4 (F127M), 5 (G66L / F127M), 6 (G66L / F127A), 7 (G66L / F127M / L160I) and 8 (G66L / H67N / F127M / L160I). The recombinant transaminase mutant obtained by the invention has the advantages of high catalytic activity, strict stereoselectivity, mild reaction conditions and the like for various cyclic ketone and N-heterocyclic ketone compounds.

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.

A process for producing C10-C18 dialkyl cycloalkanes 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 hydrogenation catalyst comprising a supported transition metal to produce a reaction product comprising an active methylene-group containing cyclic ketone selected from 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 unsaturated C10-C18 oxygen-containing cyclic organic dimer and / or trimer compounds; (iii) subjecting the unsaturated C10-C18 oxygen-containing cyclic organic dimer and / or trimer compounds produced in step (ii) to a hydrogenation reaction in the presence of hydrogen and a hydrogenation catalyst in order to produce saturated C10-C18 oxygen-containing cyclic organic dimer and / or trimer compounds; and (iv) subjecting the saturated C10-C18 oxygen-containing cyclic organic dimer and / or trimer compounds 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 active methylene-group containing cyclic ketone is recovered from the reaction product produced in step (i) by subjecting the reaction product of step (i) to an azeotropic distillation step (ia) to produce a distillate stream comprising a major portion of the active methylene-group containing cyclic ketone and a bottom stream comprising a major portion of water and a minor portion of the active methylene-group containing cyclic ketone, wherein said distillate stream is used as feed in step (ii).

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 present invention is characterized by containing (A) an organic polymer which has a molecular chain terminal terminated with a hydrolyzable silyl group and / or a hydroxysilyl group and does not contain an organopolysiloxane structure in the main polymer chain, and (B) a hydrolyzable organosilane compound represented by formula (1) and / or a partial hydrolysis-condensation product thereof at a specific ratio: (1) (R1 is a monovalent hydrocarbon group, n is 1-8, and m is 3 or 4). (C) a first agent of a curing catalyst; the two-component type room-temperature fast-curing resin composition, which is composed of a specific ratio of a component A, a component B and a component C, and a second agent containing (A ') an organic polymer in which the molecular chain end is blocked by a hydrolyzable silyl group and / or a hydroxysilyl group and which does not contain an organopolysiloxane structure in the main polymer chain, has excellent fast curability and deep curability, and also has good workability. Furthermore, during curing, as a release group (release compound), cyclic ketone compounds such as cyclobutanone, cyclopentanone and the like are released and released, so that the problems of harmfulness to a human body and the environment and safety are solved. # imgabs0 #

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 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 isothiocyanate, a non-aromatic cyclic ketone, a boronic acid, a ligand and their precursors.

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 present invention relates to a novel process for synthesizing 3α-hydroxy-5α-pregnane-20-one, which is generally known as bryosone, wherein the corresponding cyclic 20-ketal compound or cyclic 20-ketalthiolate compound of formula (IV) is deprotected using iodine in an organic solvent.

The invention relates to the technical field of catalytic organic synthesis, in particular to calix [4] arene cyclohexanediamine derivatives and a method for green catalysis of asymmetric Aldol reaction by the calix [4] arene cyclohexanediamine derivatives. The method comprises the following steps: by taking aromatic aldehyde and cyclic ketone as raw materials, calix [4] arene cyclohexanediamine derivative as a phase transfer catalyst, p-nitrobenzoic acid as an additive and water as a solvent, reacting at 25 DEG C for 24-48 hours, adding dichloromethane after the reaction is finished, extracting and separating to obtain an organic phase, drying by using anhydrous Na2SO4, and separating and purifying by column chromatography to obtain an Aldol product. The calix [4] arene cyclohexanediamine derivative is mild in synthesis process condition and high in catalytic reaction efficiency, asymmetric Aldol reaction catalyzed by the calix [4] arene cyclohexanediamine derivative takes water as a solvent, the calix [4] arene cyclohexanediamine derivative is green and environment-friendly, good dr value and ee value can be obtained through catalytic reaction at room temperature, and the calix [4] arene cyclohexanediamine derivative 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.