200 results about "C h bond" patented technology

The invention provides a preparation method of a superhydrophobic fabric or superhydrophobic non-woven fabric, which comprises the following step of: enabling a fabric containing C-H bonds or a non-woven fabric containing C-H bonds to be subjected to irradiation grafting reaction with a monomer containing long-chain alkane, thus obtaining the superhydrophobic fabric or superhydrophobic non-woven fabric, wherein the monomer containing long-chain alkane is a compound as shown in general formula (1), X is hydrogen or methyl, and n is 10-17, preferably 13-17. The invention overcomes the defects that the existing preparation process of the superhydrophobic fabric or non-woven fabric is complicated, the duration time of the modification effect is short, and the superhydrophobic fabric or non-woven fabric is intolerant of washing, is of certain toxicity, is high in cost and the like, thereby providing a washing-resistant permanent superhydrophobic fabric or non-woven fabric and a preparationmethod thereof. Since the used monomer is a non-fluorine monomer having the advantages of low toxicity, low cost and the like, the invention is beneficial to large-scale industrial production. The general formula (1) is shown in the specification.

The present invention is a one-step method for efficiently converting carbon-hydrogen bonds into carbon-carbon bonds using a combination of aryl halides, a substrate, and a copper salt as catalyst. This method allows faster introduction of complex molecular entities, a process that would otherwise require many more steps. This invention is particularly relevant for the organic synthesis of complex molecules such as, but not limited to, pharmacophores and explosives.

The invention discloses a hydrophilic modification method of fabrics or nonwoven fabrics, which is characterized by comprising the following steps of: immersing the fabrics or nonwoven fabrics in a water solution containing a water soluble crosslinking agent and persulfates, irradiating by ultraviolet light, and taking out to obtain the products, wherein the fabrics or nonwoven fabrics are synthetic fabrics or nonwoven fabrics containing C-H bonds, or synthetic fiber and natural fiber blended fabrics or nonwoven fabrics containing C-H bonds. The method of the invention overcomes the defects of long response time, influenced material surface regularity, complex operation and post processing, short modified effect duration time, narrow application range and the like. The hydrophilic modification method has the advantage of short response time, simple operation and post processing and low cost, and the obtained products have surface regularity, excellent hydrophilicity and hygroscopicityand permanent hydrophilicity. The invention also provides modified fabrics or nonwoven fabrics prepared by using the method.

The invention provides a quantum dot colored film and a preparation method therefor. The preparation method comprises the steps of providing a transparent substrate, and preparing an organic thin film and a first single-color photoluminescence quantum dot thin film on the substrate in sequence, wherein the organic thin film is formed by a transparent organic matter containing a C-H bond in a deposition manner; the photo-induced quantum dots used for forming the photoluminescence quantum dot thin film adopt the quantum dots, the surfaces of which are modified by organic groups; performing HHIC (hyperthemal hydrogen induced cross-linking) processing on the photoluminescence quantum dot thin film by a mask to enable the uncovered photo-induced quantum dots, and the photo-induced quantum dots and the organic thin film to be crosslinked; washing the photoluminescence quantum dot thin film which is processed by HHIC to remove the photo-induced quantum dots which are not crosslinked to obtain a patterned photo-induced quantum dot thin film; and repeatedly performing the steps of depositing the photoluminescence quantum dot thin film, HHIC processing and washing processing, and depositing a second single-color and/or a third single-color photoluminescence quantum dot thin film to obtain the quantum dot colored film.

The invention discloses a treatment method for removing COD (Chemical Oxygen Demand) in industrial wastewater. The wastewater is treated sequentially through a water collecting well, a thick grid, a primary settling pond, a pH regulating pond, a nano-microporous ultrasonic batch polymerization tank, a secondary settling pond, an aeration and nitrifying pond, a biological denitrification pond and a tertiary settling pond. By creatively utilizing a synergistic chemical effect of ultrasonic waves at specific frequency, C-H bond breakage and quick recombination in organic matters in the wastewater under the condition can occur on surfaces of nano-microporous membrane materials, and thus polymerization occurs on surfaces of nano-microporous surface polymers, molecular weight of organic matter polymers can be enabled to be continuously increased when an ultrasonic catalytic reaction and agitation occur intermittently and alternately, and large-particle insoluble matters are gradually formed, fall off from the surfaces of the nano-microporous membrane materials, are dispersed in the wastewater in a suspension manner, and finally are removed through settlement.

The invention discloses a C-3-site aryl-seleno substituent coumarin compound and a preparation method thereof, and a novel method for establishing C-3-site aryl-seleno substituent coumarin by directlyperforming selenium modification on a substituent coumarin C-3-site C-H bond under a visible accelerant condition. The method comprises the following steps: firstly dissolving C-4-site arylamine substituent coumarin compound and diaryl diseleno ether compound in an organic solvent, then adding an oxidant persulfate, magnetically stirring and reacting for 18 to 30 hours under an air and room temperature condition and the illumination of a blue LED light source; and after the reaction is ended, removing the solvent of a reaction solution by virtue of a rotary evaporator, purifying a residue byusing a silica gel column, and preparing the C-3-site aryl-seleno substituent coumarin compound of a general formula (I).

A carbon hydrogen structure (C: H) is one of the basic structures in the pharmaceutical chemistry structure and a formed C-H bond is the basic chemical bond. The invention discloses a preparation method and an application of deuterated drugs which can change the chemical bond energy and the hydrogen bond energy in the structure of pharmaceutical compound. The hydrogen atom (H) in pharmaceutical compound structure is substituted by the A deuterium atom (D) which is the isotope of hydrogen, therefore changing the molecular structure and the bond energy of the substituted pharmaceutical compound so as to form a new deuterated drug. The deuterated drugs can be used for pharmacokinetics research, can obviously enhance the disease-preventing or treating function of the drugs, and can reduce the toxic and side effect of the drugs.

One aspect of the present invention relates to a method for the transition metal (e.g., Cu(I)) mediated amidation of C—H bonds using electron-rich aliphatic azides. In certain embodiments, the methods are useful for the C—H insertion of nitrenes generated and stabilized by a β-diketiminato metal catalyst. In certain embodiments, said nitrenes are generated from organoazides, or by oxidation of the corresponding amine. Another aspect of the present invention relates to olefin aziridination using said β-diketiminato metal catalysts. In addition, the methods of the present invention include stereoselective C—H bond aminations and olefin aziridinatons. In certain embodiments, the methods are conducted in an aerobic environment. In certain embodiments, the present invention relates to the use of O₂ as an oxidant, wherein water is the byproduct of oxidation; this fact avoids the generation of toxic byproducts and renders the methods atom economical.

The invention relates to a preparation method of a multifunctional integrated porous solid material for catalytic oxidation, and belongs to the field of composite materials. The method comprises the following steps: preparing an organic ligand having a Bronsted alkaline function or capable of modifying Bronsted alkalinity, and carrying out a hydrothermal/co-precipitating reaction on the organic ligand and a transition metal source with catalytic activity to obtain the metal organic skeleton catalysis material integrating multiple catalysis functions. The material is applied in benzyl oxidation and alcohol oxidation systems with molecular oxygen as an oxygen source for the first time. The catalysis material prepared through the preparation method of the multifunctional integrated catalysis material effectively integrates a catalytic activity site with the Bronsted alkaline function, solves the problem of difficult activation of the green molecular oxygen source, and avoids the problems of difficult recovery and severe pollution of a homogeneous organic alkali needed by a catalysis system for realizing H removal of C-H bonds; and the multifunctional integrated catalysis material is used in the catalytic oxidation systems with the molecular oxygen as an oxygen source for the first time to realize establishment of high efficiency catalytic oxidation systems under alkali-free conditions.

The invention discloses a preparation method of surface modified nanometer diamond particles, which comprises the following steps that: (1) nanometer diamond particles are cleaned; (2) the nanometer diamond particles treated in the first step are subjected to surface hydrogenation treatment so that C-H bonds are formed on the surfaces of the nanometer diamond particles; and (3) the surface chemical modification is carried out, the nanometer diamond particles obtained in the second step are placed into a hydrogen peroxide concentration with the concentration being 20 percent to 50 percent to be soaked for 2 to 5 hours, simultaneously, the ultraviolet light irradiation is adopted, and OH bonds are formed on the surfaces of the nanometer diamond particles. The invention also discloses the surface modified nanometer diamond particles prepared by the method and an application of the surface modified nanometer diamond particles. Compared with the prior art, the surface modified nanometer diamond particles prepared by the method have the advantages that the particles are sensitive to the humidity, in addition, the preparation method is simple and is easy to implement, and wide application can be realized in the humidity monitoring field and the biological modification field.

The invention discloses a cracking method of waste plastic. The cracking method includes: using energy grass and hydrocarbon waste plastic as raw materials; preparing biofuel through co-thermal cracking catalysis technology, wherein the hydrocarbon waste plastic is mainly composed of cellulose acetate. The cracking method is simple in whole process and low in energy consumption, the energy grass and the hydrocarbon plastic are synergistic, hydrogen transfer in the plastic and oxygen-containing functional group in the energy grass are combined, breaking of C-C and C-H bonds is facilitated, and oil yield is increased. By using the cracking method, the energy grass and the hydrocarbon waste plastic are recycled, the environment problem caused by improper treatment of the energy grass and the hydrocarbon plastic is reduced, and efficient and clean utilization of solid waste is realized.

The invention discloses a hydrophilic modification method for a macromolecular filter membrane, which is characterized by comprising the following steps of: immersing the macromolecular filter membrane in aqueous solution containing a water-soluble cross-linking agent and persulfate, irradiating by using ultraviolet light, and taking out to obtain the modified macromolecular filter membrane, wherein the macromolecular filter membrane has a C-H bond. By the method of the invention, the defects that: the conventional hydrophilic modification method for the macromolecular filter membrane has long reaction time, complex operation and aftertreatment steps and long aftertreatment time, the modified macromolecular filter membrane has the poor pollution-resistant effect, the surface of the filtermembrane is uneven and the membrane pore is easy to block and the like are overcome, and the hydrophilic modification method which has the advantages of capacity of shortening the reaction time obviously, simpleness in aftertreatment and operation, short aftertreatment time and low cost, and is suitable for industrial application is provided. The invention also discloses the modified macromolecular filter membrane prepared by the method. The modified macromolecular filter membrane has the excellent surface regularity, hydrophily, moisture retention and pollution resistance, and membrane poresare not blocked, so the macromolecular filter membrane has the perpetual hydrophily.

The invention provides a method for performing gold-catalyzed selective C-H bond functionalization on phenol and aniline, which comprises the following steps: by taking phenol and aniline compounds as raw materials and taking phosphine ligand or carbene as ligand, in organic solvent, reacting with a diazo compound in the presence of a gold catalyst and a silver salt, performing carbon-hydrogen bond insertion at the para-position or ortho-position of the phenol or aniline structure. The method provided by the invention has the characteristics of low catalyst consumption, mild conditions, wide substrate application range and the like; the method can be used for quickly and efficiently synthesizing methyl acetate derivatives containing the phenol or aniline structure; and meanwhile, the method can be used for performing later modification on natural products or drug molecules (such as estrone), or be used for synthesizing some molecules having biological activity, thus having favorable application prospects.

The invention provides a catalytic, chemospecific and stereospecific method of oxidizing a wide variety of substrates without unwanted side reactions. Essentially, the method of the instant invention, under relatively mild reaction conditions, catalytically, stereospecifically and chemospecifically inserts oxygen into a hydrocarbon C-H bond. Oxidation (oxygen insertion) at a tertiary C-H bond to form an alcohol (and in some cases a hemiacetal) at the tertiary carbon is favored. The stereochemistry of an oxidized tertiary carbon is preserved. Ketones are formed by oxidizing a secondary C-H bond and ring-cleaved diones are formed by oxidizing cis tertiary CH bonds.

The invention relates to a method for preparing 3-imino isoindoline ketone compounds and particularly discloses a method for preparing the 3-imino isoindoline ketone compounds through the activation method of palladium catalysis of the C-H bond, wherein the 3-imino isoindoline ketone compounds are as shown in the formula I (refer to the Specification). The method comprises the following steps: under the existence of an inert solvent, under the catalysis of a palladium catalyst, and under the action of an oxidizing agent, the compounds II (N-alkoxy amide compounds) and the compounds III (isonitrile compounds) react to obtain the compounds I, wherein the structures of the compounds I, compounds II and compounds III are as shown in the Specification. The method is high in efficiency, excellent in selectivity, economical, environment friendly, fewer in steps, simple and convenient to operate, wide in application range of substrates, and excellent in atom economy. The invention further provides a method for further conversion of the compounds I.

The invention relates to a special ceramic and application thereof and provides a special ceramic using dravite, gray phyllite and red clay as main materials. The invention achieves the aim of environmental protection and energy saving of an internal-combustion engine by producing the special ceramic into a rod shape or sheet shape and respectively mounting the special ceramic into an oil tank of the internal-combustion engine, a filter and a fuel guide rail. Oil micellaes are reduced and ionized and the included angle of oil molecule C-H bonds is offset under the action of a spontaneous polarization electric magnetic field, a negative ion and far infrared rays generated by the ceramic; the catalytic adjustment of an oil product can be realized under the medium-low condition and the content of isooctane in oil can be increased, thereby the detonation and gradually exploding phenomena can be reduced, accordingly, the combustion of the oil product is more effective, the exhausted tail gas is less and the provided power is stronger.

The invention discloses a Co-N-C catalyst. According to a preparation method of the Co-N-C catalyst, the Co-N-C catalyst is prepared at room temperature via grinding, or ball milling, or grinding-sintering of a cyanamide compound and a cobalt salt at a mass ratio of (1-20):1. The invention also discloses applications of the Co-N-C catalyst. In applications, the Co-N-C catalyst is mainly used for selective oxidation of the benzyl positions of aromatic hydrocarbons and the allyl position C-H bonds of olefins. The synthesis process of the Co-N-C catalyst is simple, is easy to control, and is safe; and at the same time, coordination of the cyanamide compound with the cobalt salt is firm, the cost of metal Co is relatively low, requirements on equipment used in catalyst synthesis are simple, the equipment is easily available; efficiency is high; no additive is added; no solvent is added; conditions of the Co-N-C catalyst in application process are mild; and cycling performance is excellent.

The present invention relates to a novel method for ruthenium-catalyzed selective boronation reaction of amides. According to the method, a hexacoordinated metal ruthenium complex containing a norbornadiene (NBD) ligand is taken as a catalyst, an N,N-disubstituted amide and bis(pinacolato)diboron are taken as reaction substrates, and in the absence of reaction solvents and under mild reaction conditions, a carbon-hydrogen bond of methylene at the ortho position of a nitrogen atom in the N,N-disubstituted amide is selectively subjected to a boronation reaction under efficient catalysis, so thata corresponding amide borate product is obtained. Compared with currently reported methods, the novel method generally has the advantages of wide substrate applicability, low catalyst usage amount, simple operation and the like. The method of the present invention realizes for the first time a selective C(sp3)-H boronation reaction of N,N-dimethyl substituted aromatic amide derivatives. In addition, the method realizes for the first time a metal-ruthenium-catalyzed selective dehydro-boronation reaction of N,N-disubstituted amides, and provides a completely new reaction strategy for organic synthetic intermediates of amide borates.

The present invention provided an SM plastic optical fiber which can be easily and safely handled, which is low-cost for connection, which can be installed in a short distance, which has a wide range, large transmission capacity and low transmission loss and which can be interconnected with a glass SM optical fiber, and to provide a method for manufacturing the fiber. The plastic optical fiber has the core made of a non-crystalline fluorine-containing polymer (a) having substantially no C-H bond and the clad made of a fluorine-containing polymer (b) having a lower refractive index by >=0.001 than that of the fluorine-containing polymer (a), and the fiber has a single mode as the propagation mode. The plastic optical fiber is manufactured by melt extrusion or by melt spinning from a base material.

The invention relates to light-sensitive nanometer silicon dioxide and a method for preparing the same.The surfaces of the light-sensitive nanometer silicon dioxide contain covalently bonded groups shown as a formula, R1 and R2 in the formula represent independent hydroxyl or ethoxyl or nanometer particle surfaces -O-Si-.The light-sensitive nanometer silicon dioxide and the method have the advantages that the light-sensitive nanometer silicon dioxide contains a benzophenone group which is a photo-initiator, insertion reaction can be carried out on the benzophenone group and C-H bonds under ultraviolet irradiation conditions, accordingly, modified nanometer silicon dioxide and polymer substrates can be combined with one another by chemical bonds, agglomeration among nanometer particles can be prevented, the dispersibility of the nanometer particles in high-polymer matrixes can be improved, and the dispersion stability of the nanometer particles in the high-polymer matrixes can be enhanced; the light-sensitive nanometer silicon dioxide can be used as a filler to be added into high-polymer materials, is excellent in high-polymer matrix compatibility and can be connected with the high-polymer matrixes by covalent bonds after being irradiated by ultraviolet light, and the dispersion stability of the light-sensitive nanometer silicon dioxide in the high-polymer matrixes can be improved.

The present invention discloses a direct current cable accessory silicon rubber insulation surface layer molecular structure regulation and control device and method. The method comprises the following steps: (1) employing a vacuum pump to extract internal air of a reactor, closing the vacuum pump after vacuum pumping is completed, opening a nitrogen cylinder reducing valve, injecting nitrogen into the reactor and reaching an environment air pressure, and repeatedly performing the process for at least five times; (2) slowing filling fluorine and nitrogen gas mixture with 20% of volume fraction of fluorine into the reactor to allow the air pressure in the reactor to reach up to 300 mbar; (3) going on filling fluorine into the reactor until the air pressure of the reactor reaches up to 500 mbar to allow the fluorine and nitrogen gas mixture to react with silicone rubber samples, keeping the temperature in the reactor at 25 DEG C, replacing C-H bond in the silicone rubber sample surface layer molecule with C-F bond after a certain reaction time, and obtaining the silicone rubber samples with a surface layer molecular structure forming a space charge shielding layer having electronegativity. The direct current cable accessory silicon rubber insulation surface layer molecular structure regulation and control device and method can enhance the charge screening effect of the direct current cable accessory silicon rubber insulation space.

The invention discloses a food waste oil removing treatment method. Water-containing food waste is sequentially subjected to flocculation pretreatment, a buffer tank, a micro-bubble gas oil spill absorption device, an oil catalysis, re-solution and absorption reactor, a pH regulation tank, a primary sedimentation tank, an organic rhodium catalytic-reaction tank, a biological denitrification tank, a secondary sedimentation tank and a clear water tank. The method creatively utilizes the oil molecule catalysis action of a pi-allyl nickel compound, when the oil in wastewater is adsorbed by modified diatomite and is at the temperature of 200-250 DEG C, the C-H bonds in the oil molecules can transiently break under the catalysis action of the pi-allyl nickel compound and are rapidly recombined into C-C bonds or C-H bonds, the C-H bonds break again, while the C-C bonds do not break again due to the limited catalysis action of the pi-allyl nickel compound. Therefore, oil molecules shorter in carbon chain can be gradually synthesized into heavy oil molecules longer in carbon chain.

The invention relates to a composite film for a touch screen and a production method of the composite film. The composite film comprises a hard coating, a composite base material, an SiOx layer, an SiO2 layer and an ITO layer, wherein the x ranges between 1.0 and 1.9, a transition layer of the SiOx layer is added between a polyethylene terephthalate (PET) base material and the SiO2 layer, a certain Si-dangling bond exists in the SiOx layer, the Si-dangling bond and a C-H bond or C-OH bond, which exists on the surface of the composiste material are combined to form a C-Si or a C-O-Si covalent bond, adhesive force of the SiO2 layer and the ITO layer on the composite material is enhanced, the degassing requirement for the composite base material is reduced greatly, the degassing processing time is shortened, the production efficiency is improved, and the SiOx layer and the SiO2 layer have covering functions for the base material, so that water in the composite material is prevented from affecting ITO coating films, and the stability of ITO resistance is guaranteed.

The invention discloses a synthetic method of a spirocyclic compound containing 1-indanone skeleton. The method comprises the following steps: taking aromatic carboxylic acid and alpha, beta-unsaturated ketone as raw materials, taking any of p-cymene ruthenium chloride dimer, pentamethylcyclopetadienyl rhodium chloride dimmer, tris(acetonitrile)(pentamethylcyclopentadienyl)rhodium bis(hexafluoroantimonate) as a catalyst, taking any of anhydrous manganese acetate, manganese acetate tetrahydrate, anhydrous zinc acetate and zinc acetate as an additive, and thus synthesizing the spirocyclic compound containing 1-indanone skeleton by adopting a one-step method. The reaction comprises four steps such as conjugate addition reaction of aromatic carboxylic acid ortho-position C-H bond and alpha, beta-unsaturated ketone, intramolecular dehydration, Michael addition with second molecular alpha,beta-unsaturated ketone and intramolecular aldol condensation. The synthetic method has the characteristics that the raw materials are low in price and easy to obtain, the efficiency is high, the atom utilization rate is high, the reaction operation is simple and four new C-C bonds are constructed by adopting the one-step method.

The invention discloses a synthetic method of diaryl sultam compounds. According to the method, transition metal palladium is taken as a catalyst, N-methoxybenzenesulfonamide compounds and aryne precursors are subjected to a cyclization reaction based on functionalization of a C-H bond in an ortho-position of -SO2NHOMe in N-methoxybenzenesulfonamide in presence of fluoride, and a series of diarylsultam compounds are synthesized efficiently and conveniently. The method has the advantages of simple and easily available raw materials, simple reaction operation, high substrate applicability, highatom utilization ratio and the like.