80 results about "Aromatic ketone" patented technology

A radiation-sensitive composition containing a resist compound A, an acid generator B, and an acid crosslinking agent C. The resist compound A is (a) a polyphenol compound which is produced by the condensation of a C_5-45 aromatic ketone or aromatic aldehyde with a C_6-15 compound having from 1 to 3 phenolic hydroxyl groups, and, (b) its molecular weight is form 300 to 5000. The radiation-sensitive composition is solvent-soluble and exhibits a high sensitivity, high resolution, and high heat resistance.

Catheter injectable depot compositions are provided that include a bioerodible, biocompatible polymer, a solvent having miscibility in water of less than or equal to 7 wt. % at 25° C., in an amount effective to plasticize the polymer and form a gel therewith, a thixotropic agent, and a beneficial agent. The solvent comprises an aromatic alcohol, an ester of an aromatic acid, an aromatic ketone, or mixtures thereof. The compositions have substantially improved shear thinning behavior and reduced injection force, rendering the compositions readily implanted beneath a patient's body surface by injection.

The invention relates to PNHO tridentate ligands and application of related ligands in asymmetric hydrogenation and similar reactions. The novel tridentate nitrogen-phosphine-oxygen ligands are first tridentate nitrogen-phosphine-oxygen ligands containing ferrocenyl planar chiral phosphine, and are successfully applied to high-efficiency high-selectivity asymmetric hydrogenation and other similar reactions of simple aromatic ketone, alpha-hydroxyketone and beta-ketone ester. Compared with other dominant tridentate ligands, the ligands provided by the invention have the advantages of simple synthesis route and low cost, can easily implement large-scale synthesis, are stable in air, and have high activity and high selectivity in asymmetric hydrogenation reactions of carbon-oxygen double bonds.

The invention discloses a kind of compounds with a general formula of I-VIII. The compounds can be singly used as an alkene unsaturated system photopolymerization initiator and also can be combined with another photoinitiator and/or other additives.

The invention relates to a method for synthesizing an aromatic ketone compound and particularly relates to DES (Deep Eutectic Solvents) catalyzed Friedel-Crafts (F-C) acylation reaction methods. The aromatic ketone compound is synthesized from an aromatic hydrocarbon compound and an acylating reagent through F-C acylation reaction, and a DES (wherein the ratio of ZnCl2/ChCl is 2: 1) serves as a catalyst during reaction. According to the method, the DES (wherein the ratio of ZnCl2/ChCl is 2:1) serves as the reaction catalyst while serving as a reaction solvent; the process is simple, the stability is strong, no volatilization exists, and the catalytic activity is high; during reaction aftertreatment, acid is not required to be added, so that the method is simple, convenient and environmental friendly.

The invention provides polyimide, as well as a preparation method and an application thereof. The polyimide has a general formula (1) as shown in the specification, wherein Ar and Ar' can represent aryl, aromatic ether or aromatic ketone; and furthermore, the Ar and the Ar' at least comprise a side chain which contains one or more than two of N, O and F atoms at the terminal end and can form a hydrogen bond with hydroxyl. According to the polyimide disclosed by the invention, as the polyimide at least comprises the side chain which contains one or more than two of N, O, F and other atoms at the terminal end and can form the hydrogen bond with the hydroxyl, when the polyimide disclosed by the invention is utilized for forming an alignment film, the rubbing effect of rubbing cloth against the alignment film can be improved and the uniformity in liquid crystal orientation can be further improved.

The invention discloses high-liquidity poly(ether sulfone ketone) (PESK) resin. Aromatic ketone monomers are introduced into a poly(ether sulfone) (PES) polymer, and particularly heterogeneous aromatic ketone monomers are copolymerized; and the main chain of the obtained polymer molecule contains an irregular copolymer structure of polyarylether sulfone and polyaryletherketone, wherein the molar ratio of the groups is (5-9):1. An industrial production process of the high-liquidity PESK resin consists of a salifying stage and a polymerization stage, wherein the solid content of the system in the salifying stage is 20-25%; and the solid content in the polymerization stage is 35-45%. By adopting the process provided by the invention, the processing forming temperature of the obtained polymer is generally not higher than 350 DEG C, the polymer has relatively high liquidity and is easy to process; and moreover, the solvent resistance is excellent, and the application fields of the product are widened.

The invention discloses a synthesis method of a difluoroalkyl substituted aromatic ketone compound under photocatalysis. The preparation method comprises the following steps: dissolving an aromatic ketone compound, a CF2 reagent, a bidentate ligand, a photocatalyst and an alkali in an organic solvent, reacting for 10-48 h under an illumination condition, and carrying out post-treatment on the reacted solution after the reaction is finished in order to obtain the difluoroalkyl substituted aromatic ketone compound. The method provided by the invention realizes difluoroalkylation of aromatic ketone compounds under illumination, and has the advantages of easily available raw materials, mild reaction conditions, wide substrate applicability, good reaction selectivity, simplicity in operation and the like.

The invention discloses an application of a dehydroabietylamine-chiral thiourea catalyst in both-hands synthesizing gamma-nitro-aromatic ketones and gamma-nitro-aromatic mixed ketones chiral compounds in a high enantiomer. The invention successfully utilizes the chiral source of the nature to synthesize a noveldehydroabietylamine-chiral thiourea catalyst with high catalytic activity. The catalyst has low price, is easy to decorate and prepare, is simple in treatment, can be separated or recycled from the products, can be reutilized and extends the limited range of known thiourea catalyst. The invention realizes that the same catalyst in the same reaction system can generate high optical pure target product with different configurations by high-efficiency and high-activity asymmetric catalysis. The method has simple operation, uses no metal reagent and has less environmental pollution. The reaction condition is mild and the reaction can be carried out in air rather than the strict anhydrous and oxygen-free conditions.

The invention relates to a preparation method of an optically active aryl vicinal diol by reducing an alpha-hydroxy aromatic ketone under catalysis of whole yeast cells, belonging to the technical field of optically active alcohol preparation utilizing a biological catalysis method. According to the invention, the whole yeast cells are used as a biocatalyst to catalyze the asymmetric reduction of the alpha-hydroxy aromatic ketone, so as to obtain high substrate conversion rate and high enantiomeric excess value of a product. Based on the invention, when the substrate concentration is 5.0-15 g/L, different conditions of whole yeast cell catalyst systems are selected according to the different substrates, thus the conversion rate of the substrate (alpha-hydroxy aryl ketone) reaches 72.4-98.4% and the enantiomeric excess value of the product (optically active aryl vicinal diol) reaches 92.2-99.7%, and the preparation has high application value.

The invention discloses a method for preparing borate by utilizing p-toluidine lithium. The method comprises the following steps: in a water-free and oxygen free environment and in an inert gas atmosphere, adding boron into a reaction bottle subjected to dehydration and deoxygenation treatment, then adding a catalyst (p-toluidine lithium), uniformly mixing, then adding ketone, carrying out hydroboration reaction, and carrying out termination reaction by being exposed to the air, so that borate is obtained, wherein the ketone is aromatic ketone or heterocyclic ketone. The invention firstly finds that p-toluidine lithium can catalyze the hydroboration reaction on the aromatic ketone or heterocyclic ketone and borane, and a new scheme is provided for preparation of borate by carrying out thehydroboration reaction on a carbonyl compound and borane.

The invention provides a novel carbonyl reductase and a method for asymmetric reduction by using recombinant carbonyl reductase. Compared with asymmetric ketone reduction catalyzed other enzymes, the carbonyl reductase provided by the invention has the following advantages in the asymmetric reduction: the carbonyl reductase has wide substrate selectivity, can catalyze reduction of a plurality of substituted aromatic ketones like a benzene ring, a naphthalene ring, pyridine and benzopyridine and enables the optical purity of a product to be as high as more than 99% under the condition of catalysis of a substrate with a concentration as high as 100 g/L. A preparation method for the carbonyl reductase in the invention has the advantages of high concentration and high optical purity of the produced carbonyl reductase, mild reaction conditions, environment friendliness, simple operation and easy industrial scaling-up.

The invention relates to an economic and efficient method for asymmetric synthesis of R-configuration aromatic alcohol through copper salt catalysis, and belongs to the technical field of preparing optically active alcohol through catalysis asymmetric hydrosilation. According to the method, Cu salt and chiral bisphosphine ligand form a clathrate with a certain spatial configuration, and a substance with catalytic activity is formed by in-situ reaction under the action of stoichiometric hydrogenous silane and is used for preparing the R-configuration aromatic alcohol with asymmetric catalysis hydrosilation reduction aromatic ketone. According to the method, a non-noble metal catalyst is adopted, raw materials are easy to get, nitrogen protection is not needed, reaction condition is mild, operation is simple, use of hazardous articles, such as hydrogen, can be avoided, the method is safe, reliable and environmental-friendly, atom economy is good, substrate conversion rate is up to 99%, an enantiomer excess value of the product of the R-configuration aromatic alcohol is up to 93%, the simple, direct and efficient new method is provided for preparing chiral aromatic alcohol, and the method has an important industrial application value.

The invention relates to an iridium complex containing a carbonboryl benzimidazole structure and a preparation method and application thereof. The preparation method of the iridium complex comprises the following steps that 1, an n-BuLi solution is added into an carborane solution for a reaction at the room temperature for 30-60 minutes; 2, bromobenzimidazole is added for a reaction at the room temperature for 6-8 hours; 3, [Cp*IrCl2]2 is added for a reaction at the room temperature for 3-5 hours, and post-treatment is carried out to obtain the iridium complex; the iridium complex is used forcatalyzing asymmetric reduction of aromatic ketones to prepare chiral alcohol compounds. Compared with the prior art, the iridium complex adopts the dual-core iridium compound [Cp*IrCl2]2 as a raw material which reacts with n-BuLi and ortho-carbonboryl benzimidazole to obtain the trivalent iridium complex containing the ortho-carbonboryl benzimidazole structure. The iridium complex has stable physical and chemical properties and thermal stability, a synthesis process is simple and environmentally friendly, and the iridium complex catalyzes an asymmetric reduction reaction of aromatic ketones to synthesize chiral alcohol compounds under mild conditions and has excellent catalytic activity and enantioselectivity and a high yield.

The invention belongs to the technical field of preparation of lithium ion battery diaphragms, and particularly relates to a battery diaphragm for a solid-state lithium ion battery and a preparation method of the battery diaphragm. The battery diaphragm is prepared through steps as follows: preparation of an ethanol solution of ionic liquid polymers and an aromatic ketone ultraviolet cross-linking agent; ultraviolet cross-linking of polyimidazole salts and a polypropylene porous membrane; anionic recombination of the polyimidazole cross-linked polypropylene porous membrane; final drying for preparation of the battery diaphragm for the solid-state lithium ion battery. The overall performance of the ionic liquid polymers is enhanced by the aid of the polypropylene porous membrane, and a finished product of the battery diaphragm for the solid-state lithium ion battery better overcomes defects that an existing ionic liquid diaphragm is low in strength, difficult to form and prone to damage, has better strength and stability and has certain popularization and application value.

The invention discloses environmentally-friendly recycled polyethylene (PE) modified particles for an emulsion explosive package and a preparation method thereof. The recycled PE modified particle comprises the following components in parts by weight: 100 parts of waste toothpaste aluminum-plastic package recycled PE plastic, 0.2-0.5 part of photosensitizer, 0.03-0.05 part of caprylate compound and 1-3 parts of PE special toughening agent, wherein the photosensitizer comprises aromatic ketones and benzoin ethers. Through the recycled PE modified particles prepared by adding the photosensitizer, the caprylate compound and the PE special toughening agent, the performance defect of the traditional recycled plastic particles is overcome, the degradation performance of the recycled plastic is improved; and the recycled PE modified particle and the method disclosed by the invention facilitate the environmental protection and reduce the environmental pollution.

A curable resin composition containing an isocyanate compound (A) and aromatic ketimine (B) obtained by reacting aromatic amine having an amino group directly bound to an aromatic ring with cyclic ketone, in which storage stability and curability are compatible when the composition is used as a one-liquid type and a working life is appropriately long and working property is excellent because no thickening is caused by mixture of two liquids when the composition is used as a two-liquid type.