272 results about "Iodobenzene" patented technology

The invention discloses synthesis methods of a tri-(4-triazolyl phenyl) amine and a tri-(4-triazolyl phenyl) amine cadmium complex, and relates to the field of luminescent materials. The synthesis method of the tri-(4-triazolyl phenyl) amine takes copper oxide as a catalyst and dimethylsulfoxide as a solvent, tri-(4-iodobenzene) amine and triazole react at the temperature of 120-170 DEG C, then the mixture is diluted by the solvent, filtered, decolored, separated and purified sequentially to obtain the tri-(4-triazolyl phenyl) amine; the synthesis method of the cadmium complex is carried out by mixing 5-aminoisophthalic acid, 3-(4-triazolyl phenyl) amine and cadmium acetate into a mixed solution of water and alcohol, then the mixture is uniformly stirred under the acid or neutral condition to obtain a reaction liquid, and the reaction liquid is put into a reaction kettle to crystalize and react to obtain the tri-(4-triazolyl phenyl) amine cadmium complex. The synthesis methods obtain the tri-(4-triazolyl phenyl) amine and the tri-(4-triazolyl phenyl) amine cadmium complex, whose crystal purities are more than 95% and whose yields are more than 85%, through the simple synthesis route.

The invention discloses a tris(4-triazole phenyl) amine compound and single crystal and a preparation method of tris(4-triazole phenyl) amine. The organic compound is prepared by adopting a one-pot method, namely heating tris(4-iodobenzene) amine, triazole, potassium carbonate and copper oxide. The preparation method has the characteristics of simple process operation, low production cost and low environmental pollution, and is suitable for large-scale industrial production. The prepared tris(4-triazole phenyl) amine single crystal can be applied to photoelectric materials, in particular to dyes and luminescence agents.

The present invention discloses a method for synthesis of 2'-fluoro terphenyl liquid crystal. With the present invention, problems of more reaction steps, low yield, heavy environmental hazard, expensive catalysts, or hazard on the human body in the prior art are solved. The technical scheme of the present invention is that: a catalyst is added to an organic solvent of the raw material to carry out a suzuki coupling reaction to realize the synthesis of the 2'-fluoro terphenyl liquid crystal. According to the present invention, 4-bromo-3-fluoro iodobenzene, a phenyl boronic acid derivative and a base are adopted as raw materials, and are subjected to two suzuki coupling reactions in the solvent under the effect of the catalyst at the reaction temperature of 70-100 DEG C to obtain the 2'-fluoro terphenyl liquid crystal, wherein the times of the two suzuki coupling reactions are respectively 4-10 hours and 10-20 hours. The method of the present invention has advantages of simple process, mild conditions, low preparation cost, high yield, environmental protection, and strong practicability.

The invention discloses a fluorescent conjugated polymer silicon oxide nanoparticle preparation method and an application thereof. In the method, the silicon oxide nanoparticle is used as nucleus, decorated with 4-iodo-benzo on the surface, and initiated to perform polymerization to have fluorescent conjugated polymer grafted on the surface. The preparation method comprises the two following steps: firstly, decorating the surface of the silicon oxide nanoparticle with 4-iodobenzene; secondly, initiating aromatic alkynyl benzene and aromatic monomer containing sulfonic acid side chain to perform polymerization on the surface of the silicon oxide nanoparticle to prepare the fluorescent conjugated polymer silicon oxide nanoparticle under the condition of the catalyzing by the organic metallic compound. The nanoparticle can be used to detect the content of TNT in a solution. In the method of the invention, the nanoparticle is introduced into a fluorescence sensor, thus obviously increasing the specific area and improving the contact probability of fluorescent conjugated polymer and TNT to be detected and the fluorescent quenching of conjugate polymer is enlarged, thus improving the detection sensitivity of the sensor and realizing the high sensitivity detection to the explosive TNT.

The invention relates to a method of semi-synthesizing artemisinin. The method comprises the steps of: reducing arteannuic acid into dihydro arteannuic acid by utilizing diimine produced in situ, oxidizing the dihydro arteannuic acid into peroxide alcohol by utilizing singlet oxygen produced in chemical reaction in situ, and then producing artemisinin under the action of oxygen and acid; or, obtaining dihydro arteannuic acid derivatives through protecting the dihydro arteannuic acid carboxyl, then oxidizing into corresponding peroxy alcohol under the action of the singlet oxygen produced in situ, and acting with the oxygen under the catalysis of acid to obtain artemisinin with high yield. A method of producing singlet oxygen in situ mainly comprises molybdate/peroxide, nitrile compound/peroxide, diacid iodobenzene/peroxide, peroxide-disulfate, and the like. With adoption of the method, the total yield can achieve up to 65%.

The invention discloses a preparation method of a 3-alkyl quinoxaline-2(1H)-ketone compound. According to the method, aliphatic carboxylic acid reacts with iodobenzene diacetate to obtain dialiphaticcarboxylic acid iodobenzene, and the dialiphatic carboxylic acid iodobenzene and a quinoxaline ketone compound are subjected to a visible-light catalytic reaction under the action of a photocatalyst to obtain the 3-alkyl quinoxaline ketone compound. Compared with the prior art, the synthesis method has the advantages that the raw materials such as a quinoxaline-2(1H)-ketone derivative and fatty acid in use are cheap and easy to obtain, so that the cost is reduced; lighting can be carried out at room temperature, conditions are mild, the product is obtained in one step, the reaction yield is high, the operation is environmentally friendly, and industrial production is facilitated; the method is good in functional group applicability and can obtain various 3-alkyl quinoxaline-ketone compoundderivatives, and a brand-new synthetic path is provided for the 3-alkyl quinoxaline-2(1H)-ketone compound.

A phenyl tin compound is synthesized by using a derivative having various functional groups and a bromo- or iodo-benzene ring as a labeling material of a radioactive ligand. On the other hand, a novel hydroxytosyl iodobenzene compound having an electron-donating group is obtained by oxidizing iodobenzene having one or more electron-donating groups and reacting it with tosylic acid. Then, a diphenyliodonium salt which is a labeling precursor is synthesized by reacting the resulting compound with various phenyl tin compounds. Finally, a ¹⁸F-labeled ligand having various functional groups and a [¹⁸F] fluorobenzene ring is synthesized by reacting the resulting diphenyliodonium salt with [¹⁸F]F⁻.

The invention relates to the field of organic chemistry and in particular relates to a preparation method of an N-butyl-5-phenylthiazole-4-formamide derivative. The N-butyl-5-phenylthiazole-4-formamide derivative is prepared by using thiazole-4-formamide derivative and substituted iodobenzene as a substrate, copper iodide as a catalyst, sodium hydroxide as alkaline and dioxane as a solvent in an oil bath at 120 DEG C. The synthetic method has the advantages of high yield, easily available raw materials, small usage amount of the copper catalyst, no use of expensive organic alkali reagent, simplicity in reaction equipment, high atom economy and the like.

The invention discloses a synthesis method of N-phenyl-3(4-bromophenyl) carbazole. The synthesis method is characterized in that carbazole is selected as a raw material and is subjected to Ullmann reaction with iodobenzene to prepare N-phenyl carbazole; N-phenyl-3-bromine carbazole is synthesized by NBS (N-bromosuccinimide) bromination; N-phenyl-3-boric acid base carbazole is prepared through Grignard coupling; and N-phenyl-3-boric acid base carbazole and p-bromoiodobenzene are subjected to cross coupling to obtain N-phenyl-3(4-bromophenyl) carbazole. The method provided by the invention has the characteristics of high yield, low production cost, less three-waste emission and high target compound selectivity and yield, a high-efficiency loaded catalyst is used, and isomer is reduced.

The invention discloses a method for synthesizing aromatic carboxylic ester by carbonylation of aryl iodide. The method comprises: iodobenzene and derivatives of the iodobenzene, straight chain alcohol of C1 to C4 or phenolic compound and carbon monoxide are used as reactants to react in the presence of active carbon loaded palladium as a catalyst, an auxiliary catalyst and reaction solvent at 80 to 140 DEG C under a pressure of the carbon monoxide of between 0.1 and 2.5MPa for 0.5 to 8 hours, and obtaining the finished product. The method is highly efficient, economical and environment friendly, and has quite good industrial application prospect.

The invention discloses a ferrocene cuprous cluster catalyst capable of catalyzing a C-N coupled reaction and a preparation method thereof. According to the catalyst, on the basis of cuprous cluster complex of selenium/telluride ligands of ferrocene, a coupled reaction of iodobenzene and imidazole under an alkaline condition serves as a template reaction, and the yield of a series of cuprous cluster compounds serving as the catalyst is characterized by virtue of gas chromatography. The invention further discloses a preparation method of the catalyst. The series of catalysts have the yield of 99% at a high temperature within six hours, and due to the absence of a solvent, the application of the series of catalysts in production is increased. Meanwhile, the catalyst is environmental-friendly, and pollution of the solvent to the environment is reduced. Moreover, the series of cluster compounds have high auto-stability and can be stored in air for a long time.

The present invention discloses a polyfluoric terphenyl liquid crystal compound. The structural formula of the compound is as follows: R1 is C1-C8 alkyl, R2 is C1-C8 alkyl, fluoro, trifluoromethyl, trifluoromethoxy; U,V, W, X, Y and Z are fluorine substituent or hydrogen, at least one thereof is fluorine substituent. The synthetic process comprises the steps of preparing an intermediate 4-alkyl iodobenzene containing fluorine, preparing an intermediate phenyloboric acid containing fluorine, preparation an intermediate 4-alkyl biphenyloboric acid containing fluorine, and synthesizing target products of the polyfluoric terphenyl liquid crystal compound. The compound has the features of great dielectric anisotropy (delta e), excellent optical, heat, electrical and chemical stability, can be used for improving properties of the liquid crystal mixture, can be widely applied in TN, HTN, STN, TFT mixed liquid crystal materials, and further can be applied in a liquid crystal display.

The present invention discloses one kind of nanometer periodical mesoporous organic silicon oxide material and its synthesis process and application as carrier for supporting Pd catalyst used in water phase iodobenzene coupling reaction. The material has pore size of 1.8-3.9 nm, pore volume of 0.3-1 cu cm/g and specific surface area of 800-1000 sq m/g. When the supported catalyst is used in the water phase iodobenzene coupling reaction, the supported catalyst has catalytic activity higher than that of Ph-MCM-41 supported catalyst prepared with no-phenyl radical modification MCM-41 and through copolymerization. The material is used in high efficiency heterogeneous catalyst, and has simple preparation process and no toxic and harmful matter.

The invention discloses a method for synthesizing a 2-substituted benzothiazole derivative. A copper compound is used to catalyze substituted o-nitro-iodobenzene and aryl formaldehyde or aromatic heterocyclic formaldehyde by a copper compound in air or sealed environment, and the reaction is carried out in one reactor under the existence of sodium sulfide to generate the 2-substituted benzothiazole derivative. The copper catalyst adopted by the method has low cost and is easy to obtain and recover. In addition, the method can realize the synthesis of a series of 2-substituted benzothiazole and derivatives at high yield in the mild condition and is beneficial to industrial production.

A synthesis method of metixene hydrochloride relates to a synthesis process of an antiparkinsonian drug. The synthesis method comprises the following steps: taking thiosalicylic acid as a raw material to obtain 2-thiophenyl benzoic acid by coupling with iodobenzene; then dehydrating and cyclizing to obtain 9-thioxanthone; reducing a carbonyl to obtain thioxanthene; and finally allowing the thioxanthene to react with 3-chloromethyl-1-pipecoline to obtain the target product (5) metixene hydrochloride shown as a formula (5) below. The synthesis method has the advantages of available raw materials, low cost, short preparation course, simple operation and easy industrialization, and helps produce the metixene hydrochloride which is the antiparkinsonian drug.

The invention relates to a preparation method of vortioxetine. The preparation method of vortioxetine comprises the following steps: enabling 2,4-dimethyl-iodobenzene, o-bromothiophenol and 1-Boc-piperazine to react at the temperature of 25-40 DEG C in the presence of the catalysis of an appropriate amount of palladium catalyst, ligand, alkali and phase transfer catalyst to prepare a compound II and de-protecting the compound II by hydrobromic acid solution to obtain vortioxetine which shown in a formula I, or enabling 2,4-dimethylbenzenethiol, 1-bromo-2-iodobenzene and 1-Boc-piperazine to react at the temperature of 25-40 DEG C in the presence of the catalysis of an appropriate amount of palladium catalyst, alkali and phase transfer catalyst to prepare a compound II and de-protecting the compound II by the hydrobromic acid solution to obtain vortioxetine which is shown in a formula I. According to the preparation method, the preparation process is simple, the reaction selectivity is high, few impurities exist, the purification pressure is low and the yield is high.

The invention relates to a preparation method of an iodobenzene para-aminated compound promoted by m-chloroperoxybenzoic acid, and the method comprises the following steps: adding substituted acetanilide, iodobenzene, m-chloroperoxybenzoic acid and hexafluoroisopropanol into a reactor, putting the reactor into an oil bath pot at 40-80 DEG C, condensing, refluxing, magnetically stirring, and heating to react for 4-10 hours; pouring the obtained reaction liquid into a separating funnel, adding distilled water, extracting for three times by using an organic solvent, carrying out reduced pressuredistillation on an organic phase to obtain a crude product, and carrying out column chromatography separation and purification to obtain the iodobenzene para-aminated compound. The method is mild in reaction condition, high in selectivity, high in yield and environmentally friendly, and the synthesized aryl amide compound has certain biological activity and can be applied to the fields of medicinesynthesis, pesticide synthesis, paint and dye synthesis and the like.

The invention discloses a magnetic multistage nuclear @ shell structure nano-palladium catalyst and a preparation method thereof, and belongs to the field of magnetic nano-catalysis materials. The general form of the materials is Fe3O4@MAl-LDH@xPd0, wherein the MAl-LDH refers to shell hydrotalcite, the M refers to one or two divalent metal elements, and the x refers to the weight percent load of palladium. By a low-temperature double-dipping co-precipitation method, LDH nano-crystals are assembled on the surface of a Fe3O4 magnetic nuclear surface, shell LDH hexagonal nano-crystals grow in a mutually staggered mode in such a manner that ab surfaces are perpendicular to the magnetic nuclear surface, and the shell LDH hexagonal nano-crystals are honeycomb. By an impregnation reduction method, palladium nano-particles are loaded on a magnetic multistage nuclear @ shell structure carrier to obtain a primary magnetic multistage nuclear @ shell structure nano-palladium catalyst, and the palladium nano-particles are uniformly distributed at edges and staggered positions of the LDH nano-crystals. The obtained catalyst is used for iodobenzene and styrene Heck coupling reaction and has fine catalytic activity, the highest TOF value is 160.5h-1, the catalyst is recycled by an external magnetic field, and the catalytic activity is not obviously reduced after used for ten times.

The invention relates to a preparation method of an N-iodobenzene-N-phenyl amide compound, which comprises the following steps: adding substituted acetanilide, substituted iodobenzene, m-chloroperoxybenzoic acid and hexafluoroisopropanol into a reactor, putting the reactor into an oil bath pot at 40-80 DEG C, carrying out reflux condensation, magnetically stirring, and heating to react for 4-10 hours; pouring the obtained reaction liquid into a separating funnel, adding distilled water, extracting for three times by using an organic solvent, carrying out reduced pressure distillation on an organic phase to obtain a crude product, and carrying out column chromatography separation and purification to obtain the N-iodobenzene-N-phenyl amide compound. The method has the advantages of mild reaction conditions, high selectivity, high yield and environmental friendliness. The synthesized N-iodobenzene-N-phenyl amide compound has certain biological activity and can be applied to the fields ofdrug synthesis, pesticide synthesis, paint and dye synthesis and the like.