25results about "Imino compound preparation" patented technology

The application provides a triarylmethane derivative, a pigment dispersion liquid, a preparation method thereof and a photoresist, and relates to the field of photoresists. The structural general formula of the triarylmethane derivative is: wherein X1 is selected from one of long-chain alkyl groups with a length of C1-C12, X2 is selected from hydrogen or an alkyl group, X3 is selected from one of H, an alkyl group and an aromatic group, and Q is selected from one of a carboxyl group, a sulfonic acid group and a phosphoric acid group. The triarylmethane derivative can generate strong van der Waals force and pi-pi conjugation effect with pigment molecules in a colorant by virtue of the large-plane conjugated triarylmethane skeleton, so as to be firmly anchored on the surface of the pigment particles; the strong polar functional groups such as the sulfonic acid group in the molecular structure of the triarylmethane derivative are combined with the alkaline dispersant, the side long-chain alkyl groups fully act on the dispersion medium, and the re-aggregation of the nano pigment particles is effectively prevented through strong steric hindrance and electrostatic stabilization mechanism, so that the problem of poor dispersion stability is solved.

The invention provides an alpha-diimine ligand compound, an alpha-diimine nickel catalyst and a preparation method and application of the alpha-diimine ligand compound and the alpha-diimine nickel catalyst, and belongs to the technical field of organic synthesis. Wherein R1 is selected from hydrogen, methoxyl or tertiary butyl; r2 is selected from methyl, ethyl or isopropyl; and R3 is selected from hydrogen or methyl. The alpha-diimine nickel catalyst prepared by adopting the alpha-diimine ligand compound can catalyze olefin to carry out homopolymerization reaction or copolymerization reaction, so that not only is excellent catalytic performance shown, but also a polyolefin material obtained by catalyzing olefin monomer homopolymerization reaction has excellent elastic recovery performance; and the catalyst has certain application potential in olefin polymerization industry.

The application discloses a Salen catalyst which has a structure shown in formula (I-1). The Salen catalyst is a polynuclear catalyst, two or more mononuclear catalysts can be connected into the polynuclear catalyst through a group containing an amide bond, the catalytic efficiency, the resolution yield, the recovery rate and the activity after recovery of the catalyst can be improved, the polynuclear catalyst after recovery can be mixed with a fresh polynuclear catalyst for use, and the resolution yield is high, and the polynuclear catalyst can be recycled and reused for multiple times. In addition, when the polynuclear catalyst participates in a resolution reaction, an excessive amount of water is not needed, the reaction yield can be improved, the time for resolving an end epoxy compound can be shortened, the prepared product has high purity and few impurities, and the problem of difficult purification of a final product can be solved.

The objective of the present invention is to provide a method for producing a carbonyl halide safely and efficiently. The method for producing a carbonyl halide according to the present invention is characterized in comprising the step of irradiating a light to a halomethane having 1 or more halogeno groups selected from the group consisting of chloro, bromo and iodo in the presence of oxygen and ozone.

The application discloses a method for preparing alpha-deuterated-alpha-trifluoromethyl amine compounds by organic catalysis. The chiral product can be prepared by a betaine inner salt catalyst based on a cinchona alkaloid skeleton or a tertiary amine catalyst based on a cinchona alkaloid skeleton. The racemic product can be prepared by a non-chiral tertiary amine catalyst, a phase transfer catalyst or a crown ether. Meanwhile, the deuterium substitution reaction process adopts organic catalysis, has no transition metal residue risk, simple and mild conditions, good functional group compatibility, and the product is easy to purify. The method is suitable for the synthesis of alpha-deuterated-alpha-trifluoromethyl amine compounds of different types of substitution including alkyl and aryl, has high deuterium substitution rate and good selectivity.

The application discloses a kind of vinylidene acenaphthene double asymmetric alpha-diimine chemical intermediates and catalyst prepared from it, intermediate and the preparation method and application of catalyst. 2,4,6-tri-tert-butyl aniline is used as raw material, in the presence of catalyst, under the condition of 120 DEG C, the vinylidene acenaphthene double asymmetric alpha-diimine chemical intermediate with structure as shown in formula (I) is obtained.Compared with prior art, the application uses commercially available, low-cost and storage condition loose 2,4,6-tri-tert-butyl aniline instead of high-cost, storage harsh 2,4-di-tert-butyl aniline as reaction raw material, which effectively reduces the raw material procurement threshold and comprehensive production cost, and simplifies the storage condition.The raw material of the method is easy to obtain, low in cost, easy to operate, high in yield, and suitable for industrial scale-up production.

The present invention belongs to the field of organic chemical synthesis, and specifically relates to a method for preparing sulfoxide compounds as single enantiomers or in an enantiomerically enriched form. A catalyst used therein is as represented by formula I, wherein R1 is methyl or ethyl; and C* positions are chiral centers, both in the R configuration or the S configuration. The catalyst of the present invention exhibits an excellent effect in catalyzing the asymmetric oxidation of thioether compounds to prepare sulfoxide compounds as single enantiomers or in an enantiomerically enriched form, produces target compounds with a high purity and a high yield, and is applicable to industrial production.

The application provides an N-alkyl amino acid surfactant and a preparation method thereof, and belongs to the technical field of surfactants; sodium glycinate, aliphatic aldehyde and deionized water are added into a reactor according to a certain molar ratio, a certain amount of BaO-CeO2 catalyst is added, and the reaction is carried out under the conditions of a temperature of 65-85 DEG C and stirring for 1-2 hours; then, heating and stirring are stopped, and the temperature is reduced to room temperature; the filtrate is filtered, and the lower layer liquid is obtained after the filtrate is layered and left to stand, so that the amino acid surfactant is obtained. The sodium glycinate and the aliphatic aldehyde are subjected to a dehydration reaction under the action of the BaO-CeO2 catalyst to prepare the amino acid surfactant; the method is simple in operation, high in product yield, and the prepared amino acid surfactant has excellent foam stabilizing and emulsifying properties; the BaO-CeO2 catalyst is prepared by using a grinding method and a supercritical oxygen crystallization method, which is beneficial to forming the nano BaO-CeO2 catalyst with small crystal grain size, good dispersity and large specific surface area.

The application discloses a green and efficient styrene polymerization inhibitor and a preparation method thereof. The general structure of the polymerization inhibitor is as follows: wherein the substituent group R1 is independently selected from a hydrogen atom and a methyl group, and R2 is independently selected from a hydrogen atom and a tert-butyl group. The polymerization inhibitor is high in efficiency, low in toxicity, and small in environmental pollution, effectively alleviates the problems of large use amount, high cost and environmental pollution caused by the common polymerization inhibitor in the existing process production, and can be used in the storage, transportation and production process of styrene to effectively prevent the occurrence of the styrene polymerization problem, thereby providing a new selection for the use of the styrene polymerization inhibitor.

This invention provides (η) 4 (-Cyclopentadienyl)osmium-pentadienylene, its preparation method and application: Starting from osmium-pentadienylbenzene 1, it reacts with lithium triisopropylsilylacetylene to generate osmium-pentadienylbenzene 2, which is then reacted with lithium phenylacetylene to prepare the catalyst (η). 4 (-cyclopentadienyl)osmium-heptapentane 3; the preparation of this catalyst requires only two steps. Under light and oxygen atmosphere, under irradiation with a 48 W blue LED lamp, 1 mol% (η 4 (-Cyclopentadienyl)osmium pyropentadiene 3 can convert benzylamine into the target imine with a 76% NMR yield after 7 hours at room temperature.

This invention discloses a porphyrin-based porous organic salt (Por-POS), its preparation method, and its photocatalytic application. Its chemical structure is shown in Formula 3. The preparation method is as follows: using the organic base 5,10,15,20-tetra(4-aminophenyl)-21H,23H-porphyrin (Formula 1) and the organic acid 1,5-naphthalenedisulfonic acid (Formula 2) as raw materials, Por-POS material is synthesized through charge-assisted hydrogen bond self-assembly and acid-base neutralization reaction. This method has advantages such as simple process, no need for external catalyst, mild reaction conditions, and short reaction time. The prepared Por-POS can serve as a highly efficient heterogeneous photocatalyst, exhibiting excellent photocatalytic activity and stability in the photocatalytic oxidative coupling reaction of benzylamine under blue light irradiation.

The application provides an anisaldehyde hippuric acid molecular top and a preparation method and application thereof, and belongs to the technical field of detection of gibberellic acid liquid preparation. The anisaldehyde hippuric acid molecular top has a unique configuration of a rigid aromatic ring rotor and an amide bond flexible support shaft, can convert micro-viscosity changes into visual light signal output, and releases light signal intensity that regularly increases with the increase of micro-viscosity, so that the dilution degree of the gibberellic acid liquid preparation can be observed in real time and accurately controlled. The sensitive coefficient of the MBABG to viscosity is high (x=0.65), the conjugated system formed by the amide bond and the aromatic ring in the molecular structure of the MBABG gives the MBABG excellent chemical stability, the MBABG can resist the complex environment of multiple components such as thickening agents, surfactants and pH regulators in the gibberellic acid liquid preparation, and can exist stably for a long time.

The application belongs to the technical field of organic synthesis and particularly relates to a preparation process of high-efficiency synthesis of imine catalyzed by an organic base. The preparation process uses water as a solvent, uses an organic base as a catalyst, and uses a primary amine and an aldehyde as raw materials. A reaction product is obtained through reaction, and the target product imine is separated from the reaction product. The organic base is DBU. The application uses water as a reaction solvent and uses DBU as a catalyst, so that high-efficiency preparation of the primary amine to the imine can be realized, environmental pollution caused by the use of an organic solvent in the synthesis of the imine can be avoided, and the yield reaches more than 80%, which is high and simple to operate.

This invention relates to a stabilizer for inhibiting asphaltene precipitation, its preparation method, and its application, comprising: X being an aromatic core, wherein the aromatic core is a polyaromatic amine or a heterocyclic aromatic core; L1 and L2 being connecting chains that are independently C2-C6 alkylene chains; and Y being a C8-C6 alkylene chain. 20 The asphaltenes are composed of straight-chain or branched alkyl, alkoxy, or alkyl ester groups; R¹ is an optional polarity regulating group selected from -COOR², -SO2R², and -CONHR², where R² is a C1-C6 alkyl group; n=2~6, m=3~9. This invention achieves recognition and encapsulation of asphaltenes molecules through π-π interactions between the large π-conjugated structure and the fused-ring aromatic hydrocarbons of asphaltenes. The connecting chain links the aromatic core and end groups, regulating the spatial topology of the molecule and avoiding excessive branching.

The invention relates to a racemization method of trans-chiral indene amine, belonging to the field of organic synthesis. The method comprises the following steps: adding chiral indene amine and a phase transfer catalyst into a solvent, adding an oxidant, carrying out an oxidation reaction for 14-16 hours, washing and desolventizing an oil layer to obtain an intermediate imine chloride, and carrying out catalytic hydrogenation to obtain racemic trans-indene amine. The invention aims to realize racemization and cyclic utilization of ineffective body chiral indene amine through oxidation and reductive hydrogenation of low-drug-effect or ineffective trans-chiral indene amine so as to achieve the purposes of saving raw materials, reducing resource waste and saving indene amine production cost.

This disclosure relates to a method and apparatus for recovering purified materials from a crude mixture, such as a method and apparatus for recovering purified 2-methylglutaronitrile from a crude mixture obtained by an industrial nitrile manufacturing process.

The application belongs to the field of organic chemical synthesis, and particularly relates to a preparation method of a single enantiomer or an enantiomerically enriched sulfoxide compound. A catalyst used in the application is shown in formula I: wherein R1 is methyl or ethyl; C* is a chiral center, and is in R configuration or in S configuration. The catalyst has excellent effect in catalyzing asymmetric oxidation of a sulfide compound to prepare a single enantiomer or an enantiomerically enriched sulfoxide compound, the target compound has high purity and high yield, and is suitable for industrial production.

The invention discloses an open-chain imine axially chiral compound and a synthesis method thereof. According to the method, MBH carbonate and a (2-methoxynaphthalene-1-yl) (phenyl) methylenimine derivative are taken as raw materials, palladium acetate and a chiral phosphoramidite ligand are taken as catalysts, lithium carbonate is taken as alkali, methylbenzene is taken as a solvent, and the enantiomer-enriched open-chain imine axially chiral compound is obtained. The compound can react with m-chloroperoxybenzoic acid to realize efficient conversion from axial chirality to central chirality. The method has the advantages of mild reaction conditions, easily available raw materials, high product enantioselectivity and excellent yield, and provides a simple and efficient way for preparation and conversion application of open-chain imine axially chiral compounds.

The present application belongs to the technical field of polyurethane material recycling, and particularly relates to a method for preparing regenerated polyols from Schiff base polyurethane. The Schiff base polyurethane has an imine structure, and the preparation of regenerated polyols from amino alcohols and cyclic aliphatic carbonates is prone to metathesis reaction. The depolymerization can be performed at a temperature below 100 DEG C, thereby reducing the occurrence of side reactions such as oxidation and achieving energy-saving effects. Moreover, the obtained regenerated polyols can be fully reused as raw materials for preparing polyurethane foams or non-foam materials. Test data show that the rigid polyurethane foam prepared from the regenerated polyols obtained from the Schiff base polyurethane waste has improved thermal insulation performance and good compressive strength.

This invention relates to a carbon-nitrogen group-modified inverse opal bismuth halide perovskite material, its preparation method, and its application. The preparation method includes: mixing a carbon-nitrogen precursor with the inverse opal bismuth halide perovskite material, followed by calcination to obtain the carbon-nitrogen group-modified inverse opal bismuth halide perovskite material. This invention significantly enhances the application of the inverse opal bismuth halide perovskite material in the photocatalytic oxidative coupling reaction of benzylamine by modifying its surface with carbon-nitrogen groups. It exhibits excellent catalytic activity and selectivity under long-wavelength light irradiation. Furthermore, the preparation method provided by this invention is simple and reproducible, offering a new technical solution for the application of bismuth halide perovskite materials in organic oxidation reactions.

The application belongs to the technical field of catalytic synthesis, and particularly relates to a kind of N(BzBnme2) ‑ The application discloses an ionic liquid modified metal organic framework UiO-66-NH2 picoline emulsion, a preparation method and application thereof. The application uses UiO-66-N(Bnme)2OAc as an emulsifier, toluene and water as solvents, to form a kind of UiO-66-N(Bnme)2OAc stable picoline emulsion. The preparation method of the UiO-66-N(Bnme)2OAc stable picoline emulsion disclosed by the application is simple in operation, and the method has high catalytic efficiency and stability in aldehyde amine condensation reaction.

The application discloses a binaphthol Salph ligand, a Salph catalyst and a preparation method and application thereof in ring-opening polymerization, belongs to the technical field of catalysts, and first proposes a binaphthol Salph ligand and a Salph catalyst, enriches the types of the Salph ligand and the Salph catalyst, widens the application field of the Salph ligand and the Salph catalyst, and further relates to a polymerization reaction system containing the Salph catalyst, and a method for preparing P(Me-DBO) with different regularity by selectively ring-opening polymerizing racemic Me-DBO by using the polymerization reaction system containing the Salph catalyst. This is the first report on the Salph ligand and the Salph catalyst for selectively ring-opening polymerizing an axially chiral monomer to obtain an axially chiral polymer.

The application discloses a preparation method of a metal-loaded carbon catalyst and application of the metal-loaded carbon catalyst in synthesis of ynamines, and an expression formula of the metal-loaded carbon catalyst is M@C-T or M / L@C-T, wherein M is any one or more than one of metals Cu, Ni, Fe or Co; L is any one or more than one of bipyridine, triphenylphosphine, o-phenanthroline, tributyl phosphate or triethyl phosphite; C represents carbon; and T is temperature, and T is 300 DEG C to 800 DEG C. Through construction of the carbon catalyst and a suitable catalytic system, the application realizes preparation of ynamine derivatives by catalyzing reaction of O-acetyloxime and a terminal alkyne.

This invention discloses a novel [N,O]amide nickel catalyst for copolymerization of ethylene and polar comonomers, its preparation method, and its application, belonging to the field of olefin polymerization technology. The [N,O]amide nickel catalyst has the following general structural formula (II): where R1, R2, R3, R4, and R7 are independently selected from C1 to C2. 20 One of the substituted phenyl, isopropyl, and alkyl groups; R5 and R6 are independently selected from hydrogen, C1 to C6, respectively. 20 The radicals are alkyl, fluorine, chlorine, bromine, iodine, nitro, hydroxyl, phenyl, or substituted phenyl; represent tetrakis(3,5-bis(trifluoromethyl)phenyl)borate anion; and those linked to Ni represent allyl. Beneficial effects: The high activity and stability of the catalysts, along with the high molecular weight of the polymer, indicate the electron-donating ability of the catalyst substrate framework to the metal center, thereby affecting the steric hindrance of the metal center and making the activity of these catalysts far higher than that of previously reported framework catalysts.

The present application relates to the technical field of organic synthesis, and particularly to chiral alpha-amino acid and a preparation method and a method for synthesizing a natural product of a phalloidin. t The asymmetric coupling is completed under the alkali and solvent system, the unactivated primary / secondary alkyl halide and alpha-carbonyl bromide are high enantioselectively converted, and a series of chiral unnatural alpha-amino acids are prepared. In addition, the present application first completes the total synthesis of the natural product of the phalloidin through a 4+3 linear synthesis strategy and a multi-step reaction by taking the chiral alpha-amino acid 3w as a key raw material, and expands the substrate range of the chiral alpha-amino acid, thereby providing a new path for the synthesis of the natural product of the cyclic peptide.