21 results about "Dithiane" patented technology

The application relates to the field of photoelectric technology, and discloses a conjugated polymer thin film and a preparation method and application thereof. In the presence of a first solvent and a first catalyst, ternary copolymerization is carried out on (4,8-bis(5-(2-ethylhexyl)-4-fluorothiophenyl)benzo[1,2-b:4,5-b']dithiophenyl)bis(trimethyl tin), 1,3-bis(5-bromothiophene-2-yl)-5,7-bis(2-ethylhexyl)benzo[1,2-c:4,5-c']dithiophene-4,8-dione and a monomer shown in formula I, so as to obtain a ternary conjugated polymer; the obtained ternary conjugated polymer, a second solvent, a crosslinking agent and a second catalyst are blended to form a film, and annealing is carried out to obtain the conjugated polymer thin film. The conjugated polymer thin film can be used as a light absorption layer to prepare an organic electronic device. The conjugated polymer thin film obtained by the method has significantly improved mechanical performance on the basis of ensuring photoelectric performance; the in-situ crosslinking strategy is adopted, solution processing performance is ensured, the operation is simple, the controllability of the polymer structure is high, and batch repeatability is high.

The invention belongs to the field of new materials, and particularly relates to a benzoxazine phenoxazine modified dithienyl ethylene derivative as well as a preparation method and application of the benzoxazine phenoxazine modified dithienyl ethylene derivative. The invention provides a full visible light regulated benzoxazine phenoxazine conjugate modified dithienyl ethylene molecular switch, the photochromic degree of the molecular switch is the same as the effect under ultraviolet irradiation when the molecular switch drives a ring-closing reaction through visible light, and the molecular switch has high visible light responsiveness and light isomerization conversion rate.

An agent containing at least one aroma compound selected from the group consisting of E-beta-damascone, S-(2-methyl-3-furyl)ethanethioate, beta-caryophyllene oxide, beta-ionone, 2,5-dihydroxy-1,4-dithiane, methyl anthranilate, S-furfuryl thioformate, 1-isothiocyanate-3-(methylthio)propane, nootkatone, 1,4-dioxacycloheptadecane-5,17-dione, sclareol, and sclareolide is effective for masking an unpleasant smell and for making oral products in which an unpleasant smell is masked.

The application provides a continuous turbulent tubular reactor for preparing 2,5-dihydroxy-1,4-dithiane, relates to the technical equipment field of organic synthesis, and comprises a cylindrical reaction cavity, a shell coaxially fixed outside the reaction cavity, a closed annular cooling cavity left in the middle, a stirring shaft connected at both ends of the shell, a driving motor connected at one side of the stirring shaft, staggered conical protrusions fixed to the outer wall of the stirring shaft and continuous spiral blades fixed to the conical protrusions, and a temperature sensor arranged in the reaction cavity. The application forms a fluid turbulent reaction field through the composite stirring structure of the spiral blades and the conical protrusions, forms a double-channel cooling mode through the cooling cavity and the cooling channel, and can solve the problems of many impurities, low efficiency and high cost in the process of preparing 2,5-dihydroxy-1,4-dithiane in the prior art.

To provide a masking agent for unpleasant odors derived from plants, in particular a grassy odor of soybean and an unpleasant odor derived from fats and oils of processed meat products (such as a hexanal odor), a method for masking unpleasant odors using the compound, and a method for producing an oral product in which unpleasant odors are masked.SOLUTION: The present invention provides an unpleasant-odor masking agent for oral products which contains at least one aroma compound selected from the group consisting of E-beta-damascone, S-(2-methyl-3-furyl) ethanethioate, beta-caryophyllene oxide, beta-ionone, 2,5-dihydroxy-1,4-dithiane, methyl anthranilate, S-furfuryl thioformate, 1-isothiocyanate-3-(methylthio)propane, nootkatone, 1,4-dioxacycloheptadecane-5,17-dione, sclareol, and sclareolide.SELECTED DRAWING: None

The application belongs to the field of organic chemistry and provides a 1,3-dithiane substituted cyclobutene derivative and a preparation method and application thereof. That is, with acetylenic thiane compound and cinnamate compound as raw materials, intermolecular cycloaddition occurs under the promotion of a base to obtain. And through negative ion relay chemistry, a more complex cyclobutene can be obtained. The structural feature is that it has a structure shown in formula (I), wherein R 1 , R 2 is aryl; R 3 is alkyl or aryl; X = oxygen (O) or sulfur (S); and E is hydrogen, alkyl or aryl. The method provided by the application uses a cheap strong base as a promoter, avoids using a noble metal catalyst, has mild reaction conditions, simple operation, wide substrate applicability, does not need anhydrous and oxygen-free operation, has strong practicability and a prospect of industrial application. The method provided by the application can be used for synthesis and later modification of natural products, drug molecules and functional material molecules.

The invention relates to a thiophene-modified copper-cluster metal covalent organic framework material and application of the thiophene-modified copper-cluster metal covalent organic framework material in photocatalysis of organic conversion of thioamide into thiadiazole. According to the invention, a cyclic trinuclear copper cluster unit is used as a raw material, and the cyclic trinuclear copper cluster unit, 2, 5-bis (thiophene-2-yl) benzene-1, 4-diamine (alpha SPA) and 2, 5-bis (thiophene-3-yl) benzene-1, 4-diamine (beta SPA) are prepared into two types of thiophene modified copper cluster metal covalent organic framework (M-COF) materials with efficient charge separation efficiency through a solvothermal method. The material is applied to the field of photocatalytic organic conversion, and thioamide cyclization and conversion of derivatives of thioamide are achieved under irradiation of a white light LED. The prepared M-COF has excellent charge separation efficiency and electron mobility, the catalyst is applied to performance research of photocatalytic thioamide cyclization reaction, and the synthesis strategy of the catalyst has wide substrate universality and functional group compatibility. The activity is not obviously attenuated after continuous and repeated recycling, and the efficient and sustainable photocatalytic conversion performance is manifested.

The invention belongs to the technical field of organic photoelectric functional materials, and particularly relates to a luminescent material based on a conjugated modified dithienyl anthracene-phenanthroimidazole skeleton and a preparation method and application thereof. According to the invention, substituent groups (phenyl, naphthyl, anthryl, pyrenyl and triphenylamine) with different conjugation degrees are selectively introduced, and the system regulates the steric hindrance and electronic structure of molecules, so that collaborative optimization of mechanical stimuli response and aggregation-induced emission is successfully realized; the molecular engineering strategy can accurately control the force-induced discoloration behavior (blue-green-yellow reversible transformation) and AIE characteristics of the material, and keeps excellent biocompatibility at the same time. The method disclosed by the invention not only discloses a regulation and control rule of substituent conjugation degree and spatial configuration on material performance, but also provides a designable molecular platform for developing a novel intelligent luminescent material, and has important application value in the fields of anti-counterfeiting encryption, biological imaging, flexible photoelectricity and the like.

The application relates to a dithiophene glycol hydrazine aluminum ion fluorescent probe and a preparation method. The dithiophene glycol hydrazine aluminum ion fluorescent probe is prepared by carrying out an amidation reaction on 2,2-dithiophenyl glycolic acid methyl ester and hydrazine hydrate, and then carrying out an amine aldehyde condensation on 2-hydroxy-1-naphthaldehyde. The material ratio of 2,2-dithiophenyl glycolic acid methyl ester, hydrazine hydrate and methanol is 1g:2mL:16mL, the mass concentration of hydrazine hydrate is 40%-50%, the molar ratio of the intermediate 1 and 2-hydroxy-1-naphthaldehyde is 1:1, and the eluent is petroleum ether / ethyl acetate with a volume ratio of 1:4. The dithiophene glycol hydrazine aluminum ion fluorescent probe preparation method is simple, fast in response speed, strong in anti-interference ability, wide in pH application range, beneficial to convenient and trace detection of aluminum ions in an ecological environment and water, and has popularization and application values.

To provide a masking agent for unpleasant odors derived from plants, in particular a grassy odor of soybean and an unpleasant odor derived from fats and oils of processed meat products (such as a hexanal odor), a method for masking unpleasant odors using the compound, and a method for producing an oral product in which unpleasant odors are masked.SOLUTION: The present invention provides an unpleasant-odor masking agent for oral products which contains at least one aroma compound selected from the group consisting of E-beta-damascone, S-(2-methyl-3-furyl) ethanethioate, beta-caryophyllene oxide, beta-ionone, 2,5-dihydroxy-1,4-dithiane, methyl anthranilate, S-furfuryl thioformate, 1-isothiocyanate-3-(methylthio)propane, nootkatone, 1,4-dioxacycloheptadecane-5,17-dione, sclareol, and sclareolide.SELECTED DRAWING: None

Organic photovoltaics (OPVs) based on a slot-die coated ternary blends for low-intensity light harvesting are disclosed herein. The ternary blends comprise either a N-annulated perylene diimide-based electron acceptor material or an aalkyl-12,13-dihydro[1,2,5] thiadiazolo[3,4e]thieno[2″,3″:4′,5] thieno[2′,3′:4,5] pyrrolo[3,2-g] thieno [2′,3′:4,5]thieno [3,2-b]indole-2,10-diyl)bis(methanylylidene)) bis(3-oxo-2,3-dihydro1H-indene-2,1-diylidene))dimalononitrile) (BTP)-based electron acceptor material, a second acceptor material, and an electron donor material which comprises poly[(2,5-bis(2-hexyldecyloxy) phenylene)-alt-(5,6-difluoro-4,7-di(thiophen-2-yl)benzo[c] [1,2,5]thiadiazole)] (PPDT2FBT). In an aspect, a N-annulated perylene diimide dimer (tPDI2N-EH, PDI) acceptor material was incorporated into a blend of donor polymer material (PPDT2FBT) and fullerene acceptor [6,6]-phenyl-C61-butyric acid methyl ester (PC61BM) material to give ternary bulk heterojunction (BHJ) blends. In a further aspect, a BTP-based electron acceptor material was incorporated into a blend of donor polymer material (PPDT2FBT) and fullerene acceptor [6,6]-phenyl-C61-butyric acid methyl ester (PC61BM) material to give ternary bulk heterojunction (BHJ) blends.

The application discloses a kind of synthesis methods for rapidly synthesizing five-membered aromatic heterocycle-indane derivative, belong to the field of organic synthesis. With five-membered aromatic heterocyclic compound, chloroalkyl-1,3-dithiane substituent as raw material, under the action of Lewis acid, five-membered aromatic heterocycle-indane derivative is efficiently constructed through one-step experimental operation. The method has the advantages of good selectivity, mild reaction conditions, high yield, simple and safe operation, etc. The five-membered aromatic heterocycle-indane derivative synthesized by the application has a thioxane molecular structure, which can realize further chemical conversion. At the same time, it overcomes the deficiency of requiring expensive noble metal catalyst and multiple steps in most indene ring synthesis reactions, and has certain application prospect in the field of organic synthesis and medicinal chemistry.

This invention belongs to the field of new materials technology, and more specifically, relates to an alkoxytriphenylamine conjugated modified dithienylethylene derivative and its applications. The dithienylethylene derivative has structural units as shown in formula (I): wherein R1O and R2O are each independently a C1-C4 alkoxy group, and Ar is a C6-C4 alkoxy group. 14 The aryl group. The alkoxytriphenylamine-modified dithienylethylene molecular switch designed in this invention has an absorption wavelength red-shifted to the visible light region, so that the ring-closing reaction can be driven by visible light, while the ring-opening reaction itself is driven by long-wavelength visible light. This achieves full visible light control of the dithienylethylene molecular switch and has strong and efficient visible light responsiveness and remarkable photoisomerization conversion rate.

The invention belongs to the technical field of organic synthesis, and discloses a method for preparing polysubstituted 4-hydroxy-2-thiabicyclo [3.1. 1] heptane through cycloaddition reaction catalyzed by lewis acid. The method comprises the following steps: by taking polysubstituted bicyclo [1.1. 0] butane and 2, 5-dihydroxy-1, 4-dithiane as raw materials, in the presence of a Lewis acid catalyst and an organic solvent, obtaining a cyclization product as shown in a formula I; and removing R1 from the cyclization product as shown in the formula I to obtain a molecule as shown in a formula II. In addition, an asymmetric catalysis method is developed to realize enantioselective synthesis of the cyclization product as shown in the formula I. Compared with a traditional method, the preparation method has the advantages that the raw materials and the catalyst are simple and easy to obtain, the synthesis route is short, the atom economy is high, and the substrate universality is wide; the reaction product can be used as a potential bioisostere of drug active molecules containing ortho-position, meta-position or 1, 2, 4-trisubstituted aromatic hydrocarbon, such as diflunisal; the 4-hydroxy-2-thiabicyclo [3.1. 1] heptane product is subjected to pharmacokinetics and other activity tests, and shows a good application prospect.

The invention provides a method for preparing 2, 5-dihydroxy-1, 4-dithiane by using a continuous turbulent tubular reactor, and belongs to the technical field of organic synthesis application. In a continuous turbulent tubular reactor, a sodium hydrosulfide aqueous solution and a chloroacetaldehyde aqueous solution are used as raw materials, and 2, 5-dihydroxy-1, 4-dithiane is generated within a short reaction time of dozens of seconds to several minutes. The method has the characteristics of simplicity, convenience and safety in operation and high-yield continuous production of the 2, 5-dihydroxy-1, 4-dithiane product. In addition, the environmental pollution of the process is greatly reduced. And the safety performance is greatly improved.

To provide a masking agent for unpleasant odors derived from plants, in particular a grassy odor of soybean and an unpleasant odor derived from fats and oils of processed meat products (such as a hexanal odor), a method for masking unpleasant odors using the compound, and a method for producing an oral product in which unpleasant odors are masked.SOLUTION: The present invention provides an unpleasant-odor masking agent for oral products which contains at least one aroma compound selected from the group consisting of E-beta-damascone, S-(2-methyl-3-furyl) ethanethioate, beta-caryophyllene oxide, beta-ionone, 2,5-dihydroxy-1,4-dithiane, methyl anthranilate, S-furfuryl thioformate, 1-isothiocyanate-3-(methylthio)propane, nootkatone, 1,4-dioxacycloheptadecane-5,17-dione, sclareol, and sclareolide.SELECTED DRAWING: None

Title: Fused quinoxaline-2,3-dicarbonitrile derivatives, their photochemical synthesis and use thereof The present invention relates to a new photochemical synthetic route towards fused quinoxaline-2,3-dicarbonitriles of general formula (I) wherein R refers to hydrogen, halogen, (C1-C6)alkyl, (C1-C6)alkoxy or (C1-C6)alkylthio, the method comprises photochemical cyclization of the corresponding disubstituted 5,6-di(thiophen-2-yl)pyrazine-2,3-dicarbonitrile, and is specific in the use of light of the wavelength ranging from 400 to 500 nm. The present invention further relates to quinoxaline-2,3-dicarbonitrile derivatives of general formula (I), and to the use thereof in catalysis of photoredox reactions.

This patent designs and synthesizes a metal-organic framework material—Co-TBTT—based on the dithienyloctacarboxylic acid ligand, and uses it as a non-enzymatic glucose electrochemical sensing material for glucose detection. Its potential in glucose sensing was evaluated through electrochemical performance testing. Experimental results show that the Co-TBTT-modified electrode exhibits excellent electrochemical response to glucose under enzyme-free conditions, with a linear detection range of 13.5 μM to 3 mM and a detection limit as low as 0.20 μM, outperforming most currently reported enzyme-free glucose sensors. The Co-TBTT electrode in the presence of Na... + K + Even in mixed solutions containing coexisting ions and interfering substances such as uric acid (UA), ascorbic acid (AA), and dopamine (DA), it maintains good anti-interference ability and exhibits strong selectivity. These excellent properties can be attributed to the porous structure and abundant metal active sites of the Co-TBTT material, providing a novel functional material for the electrochemical sensor detection of glucose.

The application belongs to the field of organic synthesis and relates to a preparation method of a tryptophan compound. The method is to modify an alkyl functional group on the basis of tryptophan and tryptophan-containing polypeptides, that is, to use tryptophan and tryptophan-containing polypeptides and 1,3-dithiane derivatives as raw materials to react in a system of a promoter and silane to obtain a kind of C2 alkylated modified tryptophan and tryptophan-containing polypeptide compound. The method does not need noble metal catalysis, does not need anhydrous and anaerobic operation, has mild conditions, wide substrate applicability, high selectivity, is suitable for free carboxyl or amino groups, and has strong practicability. Moreover, the application provides a metal-free and more environmentally-friendly method for selective alkyl modification of peptides, which has great potential in pharmaceutical chemistry and industrial application.

This invention belongs to the field of new materials technology, and more specifically, relates to a triphenylamine phenyl conjugated modified dithienylethylene derivative, its preparation and application. The dithienylethylene derivative has structural units as shown in formula (I): wherein R1 and R2 are each independently -H, C1-C4 alkyl, or C6-C... 24 The invention designs a triphenylamine phenyl-modified dithienylethylene molecular switch, which red-shifts the absorption wavelength to the visible light region, allowing the ring-closing reaction to be regulated by visible light. At the same time, the ring-opening reaction itself regulates the wavelength in the visible light region, realizing the full visible light regulation of the dithienylethylene molecular switch photoisomerization reaction, and possessing both high visible light responsiveness and on / off ratio.

The invention belongs to the technical field of chemicals, and discloses a preparation method of dithioerythritol, which comprises the following steps: S1, adding cis-1, 4-dichloro-2-butene, thiourea and tetrabutylammonium chloride into water, carrying out reflux reaction, dropwise adding a sodium hydroxide solution after the reaction, and collecting distillate at the same time to obtain a mixture of water and 2-butene-1, 4-dithiol; s2, mixing 2-butene-1, 4-dithiol, water and ethanol, then adding osmic acid, cooling to below zero, slowly adding hydrogen peroxide, quenching osmic acid after the reaction is completed, evaporating a solvent to be thick, cooling and crystallizing to obtain 4, 5-dihydroxy-1, 2-dithiane; and S3, adding 4, 5-dihydroxy-1, 2-dithiane into methanol, stirring and dissolving, adding palladium on carbon, introducing hydrogen at 25-35 DEG C, after the reaction is completed, filtering to remove impurities, concentrating methanol, crystallizing and filtering, collecting solids, and drying to obtain the dithioerythritol. The method has the beneficial effects that the raw material cost is greatly reduced, the product income is improved, and the method is suitable for enterprise production.