118 results about "Methylated naphthalene" patented technology

Provided herein are polymorphs and crystalline forms of 2-fluoro-5-((5S,5aS,6S,9R)-1-fluoro-12-(((2R,7aS)-2-fluorotetrahydro-1H-pyrrolizin-7a(5H)-yl)methoxy)-5-methyl-5a,6,7,8,9,10-hexahydro-5H-4-oxa-3,10a,11,13,14-pentaaza-6,9-methanonaphtho[1,8-ab]heptalen-2-yl)-3-methyl-4-(trifluoromethyl)aniline (Compound of Formula (I)), pharmaceutical compositions thereof, and methods of their use, for example, in the treatment of cancer. Also provided herein are synthetic processes for the manufacture of a compound of Formula (I) (i.e., 2-fluoro-5-((5S,5aS,6S,9R)-1-fluoro-12-(((2R,7aS)-2-fluorotetrahydro-1H-pyrrolizin-7a(5H)-yl)methoxy)-5-methyl-5a,6,7,8,9,10-hexahydro-5H-4-oxa-3,10a,11,13,14-pentaaza-6,9-methanonaphtho[1,8-ab]heptalen-2-yl)-3-methyl-4-(trifluoromethyl)aniline). Also provided are compounds useful in its synthesis (e.g., those of Formulae (A), (B), (By), and (H)) and synthetic processes directed thereto.

The invention discloses a composite material and application thereof in electrochemical carbon dioxide capture, and belongs to the technical field of electrochemistry and carbon dioxide capture. The composite material provided by the invention comprises a carbon felt and a 1, 4-naphthoquinone compound, the 1, 4-naphthoquinone compound is loaded on the carbon felt; the 1, 4-naphthoquinone compound comprises at least one of 1, 4-naphthoquinone, 2-methyl-1, 4-naphthoquinone or 2, 3-dimethyl-1, 4-naphthoquinone, and the compound is a compound of the 1, 4-naphthoquinone, the 2-methyl-1, 4-naphthoquinone and the 2, 3-dimethyl-1, 4-naphthoquinone. In the composite material disclosed by the invention, a 1, 4-naphthoquinone structure of the 1, 4-naphthoquinone compound can realize specific capture of CO2 through a reversible oxidation-reduction reaction, a carbon felt three-dimensional porous framework provides a smooth channel for CO2 mass transfer and electron transmission, and the 1, 4-naphthoquinone structure and the carbon felt three-dimensional porous framework cooperate with each other to solve the problems of low capture capacity, poor stability and high energy consumption of a traditional carbon material; therefore, the method has a good application prospect in electrochemical carbon dioxide capture.

The invention discloses an ultra-pure coal preparation method based on a catalytic hot-melt extraction method. The method comprises the following steps: (1) grinding a coal sample to obtain coal powder; (2) uniformly mixing the pyrite catalyst with pulverized coal to obtain a coal / catalyst mixture; (3) mixing the coal / catalyst mixture with a composite extraction solvent, and extracting; wherein the composite extraction solvent comprises methylnaphthalene oil and methanol; (4) carrying out solid-liquid separation on the extracted product to respectively obtain extraction residues and extraction liquid; and (5) distilling to remove the extraction solvent in the extraction liquid, and cleaning the obtained solid product to obtain the ultra-pure coal. Through cooperation of catalysis and hot melting extraction, the extraction effect is good, and the yield of the ultra-pure coal is high.

The invention discloses a compound dispersing agent, a mixed electroplating solution and application, the compound dispersing agent comprises a first anionic surfactant, a second anionic surfactant and a nonionic surfactant, and the first anionic surfactant comprises a sulfonate compound; and / or the second anionic surfactant comprises one or more of betaine or carboxylate; and / or the nonionic surfactant comprises one or more of a naphthoquinone sulfonate formaldehyde condensation compound, a melamine-formaldehyde condensation compound and methylnaphthalene sulfonic acid formaldehyde condensation compound sodium salt. In the compound dispersant, the first anionic surfactant plays a role in surface wetting and dispersing, the second anionic surfactant plays a role in main dispersing, and the nonionic surfactant plays a role in surface active wetting, so that the compound dispersant disclosed by the invention has good synergism; the graphene dispersing agent plays a role in dispersing graphene in a plating solution system, plays a certain positive role in ion migration in the plating solution, and does not cause poisoning harm to the plating solution.

The invention provides a method for separating 2-methyl-6-propionyl naphthalene through melt crystallization, which comprises the following steps: reacting 2-methylnaphthalene with propionic anhydride under the action of a catalyst to obtain a 2-methyl-propionyl naphthalene mixture; the 2-methyl-propionyl naphthalene mixture is distilled, and a 2-methyl-propionyl naphthalene crude product is obtained; and carrying out melt crystallization on the 2-methyl-acyl naphthalene crude product to obtain the 2-methyl-6-propionyl naphthalene. According to the method for separating the 2-methyl-6-propionyl naphthalene through melt crystallization, after the crude product of the 2-methyl-6-propionyl naphthalene is obtained through distillation and purification, the high-purity 2-methyl-6-propionyl naphthalene can be obtained through a melt crystallization one-step method. The method has the advantages of simple process operation, high separation efficiency, low energy consumption, high product purity and the like.

The invention provides a methylnaphthalene alkylation catalyst as well as a preparation method and application thereof. The methylnaphthalene alkylation catalyst is obtained by carrying out variable-pressure hydrothermal aging and acid pickling on an HMCM-22 molecular sieve; the external specific surface area of the methylnaphthalene alkylation catalyst is 100-140 m < 2 > / g, and the mesoporous volume is 0.8-1.5 cm < 3 > / g; the strong acid center at the temperature of 370-485 DEG C accounts for 80-90% of the weak acid center at the temperature of 200-350 DEG C; the total acid amount is 0.5 to 1.9 [mu] mol / NH3. The methylnaphthalene alkylation catalyst has good stability on the premise of ensuring high activity, is used for catalyzing alkylation of 2-methylnaphthalene and methanol to prepare 2, 6-dimethylnaphthalene, and has good selectivity on DMN and 2, 6-DMN.

The invention relates to a method for synthesizing menadione through in-tank indirect electrooxidation of 2-methylnaphthalene. Metal titanium is used as a substrate, a Sn-Ir-doped titanium-based PbO2 electrode is prepared by adopting a coating method and is used as an electrolytic anode, and a Pb electrode is used as a cathode. 2-methylnaphthalene, a solvent, cobaltous sulfate, sulfuric acid, ammonium sulfate, an electrocatalyst and water are prepared into anolyte according to a certain proportion, a sulfuric acid aqueous solution serves as catholyte, an oil-water two-phase reaction solution is obtained from an anode in a two-phase electrolysis mode, an oil phase is directly refined to obtain menadione, and a water phase is reused after being refined. The method is short in technological process, few in three wastes, mild in condition and extremely low in cost, and has extremely high industrialization prospects.

The application provides a method for preparing beta-methylnaphthalene from a methylnaphthalene-containing fraction based on solution homogenization crystallization separation, and comprises the following steps: pumping the methylnaphthalene-containing fraction into a fluidized bed reactor, performing primary cooling treatment, and performing ultrasonic treatment through an ultrasonic device arranged on the inner wall of the fluidized bed reactor, and then filtering after the crystallization treatment; re-heating the solid in the fluidized bed reactor, then performing secondary cooling treatment and ultrasonic treatment at the same time, and then filtering after the crystallization treatment; re-heating the solid in the fluidized bed reactor, then performing third cooling treatment, and performing ultrasonic treatment at the same time, and then filtering after the crystallization treatment, collecting the filter residue, and then drying to obtain high-purity beta-methylnaphthalene. The method combines the fluidized bed reactor with the ultrasonic treatment technology, and adopts step-by-step crystallization, so that impurities are effectively removed, high-purity beta-methylnaphthalene is obtained, and the yield of the product is obviously improved.

The present disclosure provides compounds, compositions, and methods for reducing or preventing fouling in an industrial processes. A compound or composition may include a methylnaphthalene sulfonate-formaldehyde polymer and / or a sulfonated dispersant. An industrial process may include, for example, a chemical manufacturing process, such as an acrylonitrile manufacturing process. The disclosure also provides methods of manufacturing the compounds and compositions disclosed herein.

The invention provides a methylnaphthalene alkylation catalyst as well as a preparation method and application thereof. The preparation method of the methylnaphthalene alkylation catalyst comprises the following steps: carrying out hydrothermal aging on an HMCM-22 molecular sieve; the HMCM-22 molecular sieve subjected to hydrothermal aging is placed in acid liquor for acid treatment, and the methylnaphthalene alkylation catalyst is obtained. The invention also provides the catalyst prepared by the method and a method for preparing 2, 6-dimethylnaphthalene by alkylation of 2-methylnaphthalene and methanol based on the catalyst. On the premise of ensuring high activity and high stability, the HMCM-22 molecular sieve provided by the invention also has good selectivity on dimethylnaphthalene and 2, 6-dimethylnaphthalene.

The invention discloses a method for directly preparing a racemic oxidation product from a fennerenone enantiomer through photocatalysis, and belongs to the technical field of organic synthesis.The method comprises the steps that an R-type fennerenone isomer is taken to be placed in a reaction bottle, a photosensitizer containing iridium or ruthenium is added, and a solvent is added at the speed of 0.1 M in the air atmosphere; the method comprises the following steps: dissolving 4-(4-cyano-2-methoxyphenyl)-5-ethoxy-2, 8-dimethyl-1, 6-naphthyridine-3-formamide in a solvent, stirring, transferring a mixture into a photoreactor of a blue light LED (Light Emitting Diode) with the wavelength of 455-465 nm, stirring, transferring a mixed solution after the reaction is finished into a round-bottom flask, purifying a volatile solvent to obtain a product 4-(4-cyano-2-methoxyphenyl)-5-ethoxy-2, 8-dimethyl-1, 6-naphthyridine-3-formamide, and carrying out chiral HPLC (High Performance Liquid Chromatography) analysis on the product. High temperature, high pressure or a strong oxidant is not needed, and reaction conditions are mild; oxygen in air is oxidized at room temperature, so that energy consumption and pollutant generation are reduced; compared with the traditional oxidation condition, the method does not need to undergo the process of oxidation first and then high-temperature induced racemization, and the racemization product can be directly obtained.

The invention relates to a synthesis method of 4-(4-cyano-2-methoxyphenyl)-5-ethoxy-1, 4-dihydro-2, 8-dimethyl-1, 6-naphthyridine-3-formamide, which comprises the following four steps: carrying out a Knoevenagel condensation reaction, carrying out a Hantzsch dihydropyridine synthesis method, carrying out an O-ethylation reaction and carrying out a deprotection reaction to synthesize the 4-(4-cyano-2-methoxyphenyl)-5-ethoxy-1, 4-dihydro-2, 8-dimethyl-1, 6-naphthyridine-3-formamide, and carrying out a reaction to obtain the 4-(4-cyano-2-methoxyphenyl)-5-ethoxy-1, 4-dihydro-2, 8-dimethyl-1, 6-naphthyridine-3-formamide. The preparation method of the 4-(4-cyano-2-methoxyphenyl)-5-ethoxy-1, 4-dihydro-2, 8-dimethyl-1, 6-naphthyridine-3-formamide has the advantages that the selectivity is high, the post-treatment is simple, the yield and the purity of the product are high, a new synthesis route and method are developed for synthesizing the 4-(4-cyano-2-methoxyphenyl)-5-ethoxy-1, 4-dihydro-2, 8-dimethyl-1, 6-naphthyridine-3-formamide, the amplified production is conveniently realized, and the method is suitable for industrial production. The method has good application potential and research value.

The invention discloses a preparation method of a low-pore-number composite lining, and belongs to the technical field of textiles. The preparation method of the low-hole-number composite lining comprises the following steps: (1) weaving polyester yarns into gray fabric; (2) shaping and preshrinking the gray fabric; (3) dyeing the set and pre-shrunk gray fabric; (4) shaping and finishing the dyed gray fabric to obtain a composite lining; wherein the dye for dyeing is obtained by reacting N-amino-4-N, N-dimethyl-1, 8-naphthalimide with ferrocene dicarboxaldehyde, and the dye for dyeing is obtained by reacting N-amino-4-N, N-dimethyl-1, 8-naphthalimide with ferrocene The setting agent for setting and finishing contains a hydrophilic softening agent, the hydrophilic softening agent is obtained by mixing polyether phenyl silicone oil with a compound emulsifier and deionized water, and the polyether phenyl silicone oil is obtained by reacting side chain hydrogen-containing silicone oil, allyl alcohol polyoxyalkyl ether, vinyltriethoxysilane and 1-(4-vinyl-phenyl)-ethanone; the prepared low-hole-number composite lining is good in hydrophilicity, color fastness and softness.

The embodiment of the invention provides an alkyl naphthalene sulfonate antirust agent produced through methylnaphthalene alkylation, and relates to the technical field of synthesis of petroleum sulfonate antirust agents. A method for producing an alkyl naphthalene sulfonate antirust agent through methylnaphthalene alkylation comprises the following steps: adding high-purity methylnaphthalene into a reaction kettle, adding a Lewis acid catalyst, uniformly stirring and mixing, slowly adding C9-C12 olefin into a reaction system in a dropwise adding manner under a stirring condition, dropwise adding for 30 minutes to 2 hours, and after the dropwise adding is finished, cooling to room temperature to obtain the alkyl naphthalene sulfonate antirust agent. After the dropwise adding is finished, continuously keeping the temperature, stirring and reacting for 2-4 hours, and cooling to room temperature after the reaction is finished, so as to obtain a reaction mixture containing alkyl naphthalene. The alkyl naphthalene sulfonate with clear components, high purity and excellent anti-rust performance is prepared by optimizing the molar ratio and reaction conditions of methylnaphthalene and olefin and combining an efficient purification process, green and efficient preparation of the anionic surfactant with controllable raw materials and stable quality is realized, and the method has a good industrial application prospect.

The invention provides a naphthalene aromatic hydrocarbon alkylation catalyst as well as a preparation method and application thereof. The naphthalene aromatic hydrocarbon alkylation catalyst is an MCM-22 molecular sieve loaded with a metal element, and the naphthalene aromatic hydrocarbon alkylation catalyst contains 0.1-4.0% of the metal element based on 100% of the mass of the naphthalene aromatic hydrocarbon alkylation catalyst; the metal elements comprise one or a combination of more than two of Fe, Co, Ni, Cu, Zn and Cr. The naphthalene aromatic hydrocarbon alkylation catalyst can be used for converting carbon monoxide and / or carbon dioxide into 2, 6-dimethylnaphthalene with high added value, and has the advantages of short process route, environmental protection, low carbon, high conversion rate of carbon monoxide and / or carbon dioxide, high alkylation rate of naphthalene aromatic hydrocarbon and high long-period stability.

The present application relates to a kind of device and method for extracting high-purity chemicals from coal tar wash oil fraction, comprising: naphthalene separation column, methylnaphthalene separation unit, acenaphthene-fluorene-dibenzofuran separation unit;Methylnaphthalene separation unit includes methylnaphthalene separation tower, β-methylnaphthalene subunit and α-methylnaphthalene subunit connected in sequence;Acenaphthene-fluorene-dibenzofuran separation unit includes light removal tower, acenaphthene subunit, dibenzofuran subunit and fluorene subunit connected in sequence;The material outlet of the bottom of naphthalene separation column is connected with methylnaphthalene separation tower;The material outlet of the bottom of methylnaphthalene separation tower is connected with the material inlet of light removal tower.The device provided by the present application can effectively extract target chemicals in coal tar wash oil fraction by reasonable configuration of the device and coupling cooperation between devices, and obtain high-purity products.Compared with existing wash oil extraction chemical technology, it has higher efficiency, wider applicability and better product quality.

The invention relates to the technical field of production of 2, 6-dimethylnaphthalene, and discloses a production method and a production system of 2, 6-dimethylnaphthalene, and the production method comprises the following steps: (1) under a liquid phase condition, in the presence of an alkyl transfer catalyst, contacting reaction raw materials with a transfer alkylating agent to obtain a product mixture; the content of the 2, 6-dimethylnaphthalene is not less than 15wt% on the basis of the total content of the bicyclic aromatic hydrocarbon in the product mixture; (2) rectifying the product mixture to obtain a light component and a heavy component containing the dimethylnaphthalene isomer, and returning the light component to the step (1) to provide at least part of reaction raw materials; (3) mixing the heavy component obtained by rectification with a complexing agent, carrying out complexing crystallization, and then carrying out alkali washing to obtain a 2, 6-dimethylnaphthalene crude product; and (4) mixing the 2, 6-dimethylnaphthalene crude product with a solvent, and recrystallizing. The method has the advantages of high purity and high yield of the 2, 6-dimethylnaphthalene.

The invention provides a catalyst for preparing 2, 6-dimethylnaphthalene by catalyzing alkylation of 2-methylnaphthalene as well as a preparation method and application of the catalyst. The catalyst is prepared from the following components in percentage by mass: 60 to 90 percent of H-type boron modified MCM-22 molecular sieve and 10 to 40 percent of binder, wherein the mass of the H-type boron modified MCM-22 molecular sieve is 100 percent. The catalyst has high reaction activity and high stability at the same time.

The invention relates to optically active diphenol with both central chirality and axial chirality as well as a synthesis method and application of the optically active diphenol. The structural formula of the optically active diphenol is as follows: # imgabs0 #, wherein Ar1 is an aryl compound or a heteroaryl compound with different substituent groups, Ar3 is an aryl compound with different substituent groups, Ar2 is an aryl compound or a heteroaryl compound with different substituent groups, and Ar4 is halogen or hydrogen. The invention focuses on an enantioselective synthesis method for constructing a diphenol compound NAPOLs with rigid conformation. The synthesis method comprises the following steps: catalyzing 1-aryl ethynyl-2-naphthol and a derivative thereof and 8-aryl hydroxymethyl-2-naphthol and a derivative thereof through chiral phosphoric acid to synthesize an optically active NAPOLs diphenol ligand with axial chirality and central chirality. The compound has the characteristics of central chirality and axial chirality, and is expected to provide a new idea for the field of asymmetric synthesis.

The invention provides a catalyst for preparing 2, 6-dimethylnaphthalene by catalyzing alkylation of 2-methylnaphthalene as well as a preparation method and application of the catalyst. The catalyst is obtained by carrying out metal element modification on an HMCM-22 molecular sieve by adopting an ion exchange method, and the catalyst contains 0.4-3.6% of metal elements based on 100% of the mass of the catalyst; the metal element is a rare earth metal element or a transition metal element. The catalyst has good reaction stability on the premise of ensuring high reaction activity.

The present application relates to a kind of preparation methods of sodium bisulfite menadione, which is prepared by the reaction of 2-methyl-1,4-naphthoquinone and sodium bisulfite in the presence of K2O-MgO / Al2O3 as an aid in the mixed solution of organic solvent and water.The present application makes the conversion rate of raw materials >99% by introducing K2O-MgO / Al2O3 as an aid, the selectivity is greater than 95%, and can reduce the phenol, quinone impurities (content <800ppm) in the product.The process is simple, the reaction condition is mild, the process is stable, the purity of product is more than 98%, and the total yield is more than 94%.

The application discloses a method for cracking tar into high value-added products, which adopts a route of separating light components by fractional distillation and then hydrogenating heavy components, so that the yield of target products can be affected by hydrogenation of naphthalene, methyl naphthalene and the like below 250 DEG C in the process of hydrocracking, and on the other hand, the components below 250 DEG C account for about 30% to 50%, so that the hydrogen consumption in the subsequent hydrocracking can be reduced by separating the components in advance. After the heavy fraction is subjected to hydrocracking, part of polycyclic aromatic hydrocarbons in the heavy fraction can be cracked into part of monocyclic aromatic hydrocarbons, which can be used for producing aromatic solvent oil, so that the light fraction in the hydrocracking product is separated and mixed into the light fraction generated by pre-fractionation, and the next step processing is carried out, so that the yield of high value-added products can be further improved.

The invention discloses a dispersant composition solution and application thereof in preparation of a liquid disperse dye. The dispersant composition comprises a graft copolymer A, a wetting agent B and a defoaming agent C. Wherein the grafted copolymer A is a beta-sodium naphthalene sulfonate or methyl sodium naphthalene sulfonate grafted polymer of sodium lignin sulfonate. The high-efficiency dispersing agent composition solution provided by the invention can be applied to preparation of a liquid disperse dye, the mass ratio of the dispersing agent composition to the disperse dye is (1: 2)-(1: 10), and the solid content of the liquid disperse dye is 30%-50%. Compared with a traditional dispersing agent, the dispersing agent composition has the advantages that the color depth value is obviously reduced, and the contamination to fibers is reduced. The liquid disperse dye prepared by using the dispersant composition shows excellent performance in the aspects of grinding efficiency, reduction hydrolysis rate, high-temperature dispersion stability and the like.

The invention belongs to the field of medicinal chemistry, and discloses a deubiquitinating enzyme USP28 small-molecule inhibitor and a preparation method and application thereof, the general formula of the deubiquitinating enzyme USP28 small-molecule inhibitor is as follows: in the formula, A ring is selected from substituted or non-substituted C5-6 aromatic ring; an indole ring; 2, 4, 5-benzothiazole ring; and a substituted or non-substituted C5-6 aromatic heterocyclic ring, wherein a heteroatom is selected from N, O or S. R1 is selected from hydrogen, nitryl, hydroxyl and halogen; the compound is selected from the group consisting of phenyl, phenyl, phenyl, phenylamino, phenylamino, phenylamino, phenylamino, phenylamino, phenylamino, phenylamino, phenylamino, phenylamino, phenylamino, phenylamino, phenylamino, phenylamino, phenylamino, phenylamino, phenylamino, phenylamino, phenylamino, phenylamino, r < 2 > is selected from tetrahydroisoquinolyl or tetrahydroisoquinolyl substituted by one or more halogens or methyl groups, phenyl-N, N-dimethyl methylamino, N-methyl phenyl methylamino, methyl tetrahydropyridoxyl, N, N-dimethyl methylaniline or N, N-dimethyl naphthyl amino or N, N-dimethyl halogenated anilino, R < 2 > is selected from tetrahydroisoquinolyl or tetrahydroisoquinolyl substituted by one or more halogens or methyl groups, phenyl-N, N-dimethyl methylamino, N-methyl phenyl methylamino, methyl tetrahydropyridoxyl, N, N-dimethyl methyl anilino or N, N-dimethyl naphthyl amino or N, N-dimethyl halogenated anilino. The compound shows good selective inhibitory activity on USP28 enzyme, and has a good application prospect when being used as an active component for preparing USP28 inhibitor drugs.

The present invention provides a method for continuously preparing 2,6-dimethylnaphthalene. The method comprises: alternately introducing a gas-phase carrier and a liquid-phase carrier into a fixed-bed reactor, mixing the gas-phase carrier and the liquid-phase carrier with liquid reaction starting material continuously fed into the fixed-bed reactor, and bringing the reaction starting material into contact with a solid acid catalyst bed in the fixed-bed reactor to perform isomerization, thereby obtaining 2,6-dimethylnaphthalene. The preparation method involves a simple process and has low energy consumption.

The invention discloses internal peroxide singlet oxygen carrier molecules capable of being quickly converted and application thereof, and belongs to the field of functional molecule design and intelligent materials. The molecules are functionalized on the ferroferric oxide magnetic nano material, and a singlet oxygen storage system which is kept inert under the normal temperature condition is successfully constructed. When the system is in contact with fluorine ion sources such as tetrabutylammonium fluoride and the like, carbon-silicon bonds are triggered to break through nucleophilic substitution reaction, so that a molecular structure is promoted to be quickly converted into 1, 4-dimethylnaphthalene endoperoxide and is subjected to ring cracking, singlet oxygen is released, and accurate regulation and control of a molecular switch are realized. A DPBF probe verifies that singlet oxygen release of the system can be controlled through fluorine ions, and excellent time-space controllability is shown. Furthermore, a magnetically-controlled singlet oxygen source is constructed by loading on a ferroferric oxide nano-carrier, and a singlet oxygen nano-carrier controlled by a magnetic field is constructed; the limitation that a traditional photosensitizer depends on an external light source and oxygen is broken through, and wide application prospects are achieved.

The present invention discloses a pyrene-based viologen, a preparation method thereof, and an electrochromic device. The pyrene-based viologen comprises a compound represented by the general formula (I): #imgabs0#, wherein R is one of methyl, benzyl, methylnaphthalene, methylanthracene, methylbenzo[a]pyrene, methylpyrene, methylphenanthrene, and methylperylene. The pyrene-based viologen molecular design of the present invention forms a unique electron donor-donor-donor conjugated structure by introducing pyrene, benzyl, methylnaphthalene, methylanthracene, methylbenzo[a]pyrene, methylpyrene, methylphenanthrene, or methylperylene and utilizing the hyperconjugation effect of methylene groups. This significantly improves the optical and electrical properties of the viologen, in particular the fluorescence performance and coloring efficiency.

The invention discloses a method for preparing 2-methyl-6-acyl naphthalene, which comprises the following steps: S1, mixing aluminum trichloride crystals with triethylamine hydrochloride powder under the protective atmosphere and anhydrous condition to obtain ionic liquid; s2, under a protective atmosphere, dropwise adding acyl chloride into the ionic liquid to obtain an acylation reagent of acyl chloride; s3, dissolving 2-methylnaphthalene to obtain a 2-methylnaphthalene solution; s4, adding an acylation reagent into the 2-methylnaphthalene solution under a protective atmosphere and a low-temperature condition, and stirring to react; and S5, after the reaction, quenching the reaction product by using a hydrochloric acid solution, then extracting, neutralizing the extract, and drying to obtain the 2-methyl-6-acyl naphthalene product. The method for preparing the 2-methyl-6-acylnaphthalene is different from the prior art, the method abandons the use of a toxic polar solvent and a strong mixing mode, and many problems caused by the polar solvent and the strong mixing mode do not exist in the preparation process of the 2-methyl-6-acylnaphthalene.

The invention provides a naphthyl photoacid generator and a synthesis method thereof. The photoacid generator comprises the following structural general formula: # imgabs0 #, and in the structural general formula, R is C1-C12 alkane. The preparation method of the photoacid generator comprises the following steps: (1) carrying out nucleophilic reaction on a halogenated methylnaphthalene derivative and a sodium mercaptide derivative at different positions to prepare a methylnaphthalenesulfane derivative; and (2) preparing a sulfonium salt compound through a reaction of the methylnaphthalenesulfane derivative and the halogenated methylnaphthalene derivative, and further preparing the naphthyl photoacid generator through an ion exchange method. The prepared photoacid generator is a novel photoacid generator and has good fat solubility, and the yield and purity of the preparation method are high.

The application discloses a hydrogen type ZSM-5 / ZSM-12 / SAPO-11 composite molecular sieve and a preparation method and application thereof, and belongs to the fine chemical industry field. The preparation method comprises the following steps: uniformly mixing ZSM-5 pre-crystallization solution, ZSM-12 pre-crystallization solution and SAPO-11, co-crystallizing at 150-200 DEG C for 1-4 days, and then performing primary calcination to obtain the ZSM-5 / ZSM-12 / SAPO-11 composite molecular sieve. The composite molecular sieve disclosed by the application has the advantages of high activity, good 2,6-DMN selectivity and carbon deposition resistance, the molar ratio of 2,6-DMN to 2,7-DMN in the product is high, the separation difficulty is relatively low, and the composite molecular sieve has great industrial application prospect in the preparation of 2,6-DMN through the catalytic naphthalene / 2-methylnaphthalene methanol alkylation reaction.