101 results about "Ullmann reaction" patented technology

The invention belongs to the technical field of photoelectric materials, and particularly relates to luminescent materials based on thioxanthene-fluorene spiral structures and organic photoelectric devices adopting the materials as luminescent layers. The luminescent materials adopts the thioxanthene-fluorene spiral structures as skeleton units. Intermediates are prepared through Ullmann reactions, and then the target compounds are obtained through Ullmann reactions or Suzuki reactions. The materials are single in structure and definite in molecular weight. The spiral structures of the materials can adjust an intermolecular accumulation manner, thus effectively inhibiting exciplex luminescence. The materials have deep meaning for development of high-effect devices. The organic photoelectric devices adopting the materials as the luminescent layers have good luminescent properties and can be used for small organic molecule light emitting diodes.

The invention discloses a process for synthesis of asenapine. The asenapine is prepared through adopting a compound (18) as a key intermediate and carrying out the following steps that: 1.1, the compound 18 is subjected to a Ullmann reaction under a alkaline condition through adopting copper powder as a catalyst to generate a ether (19); 1.2, the ether (19) is subjected to a carbonyl reduction to obtain the target compound of the asenapine (1). The process has the following advantages that: cheap and available 2-bromobenzaldehyde is adopted as an initial raw material and is subjected to acondensation, a addition, a reductive amination and a intramolecular cyclization reaction, a aminomethylation, a open loop transposition and then loop closing, a demethylation and a Ullmann loop closing reaction to synthesize of the asenapine (1); cis-trans-isomer is subjected to a delicate transposition to obtain a trans-product, such that the process is simplified and easy to be operated; the raw material is easy to be obtained and has cheap price; each reaction is a normal reaction, and reaction conditions are mild; a total yield is substantially improved; production cost is reduced; a purity of the product is more than 99% through a detection by HPLC.

A polymer useful as an ion conductor in fuel cells includes a perfluorocyclobutyl moiety and pendant PFSA side groups. The polymer is made by a variation of the Ullmann reaction. Ion conducting membranes incorporating the polymer are provided.

The invention relates to a donor-acceptor compound light-emitting material based on a dicyanopyrazine and dicyanobenzopyrazine derivative, and an electroluminescent device for preparation, and belongsto the technical field of organic electroluminescence. According to the present invention, the dicyanopyrazine and dicyanobenzopyrazine derivative as the good electron acceptor nucleus can be linkedto different donor groups through a Suzuki reaction or Ullmann reaction to synthesize a series of electron donor-acceptor type organic small molecule light-emitting materials, wherein the materials have characteristics of large rigid planar skeleton, good thermal stability and high TADF fluorescence quantum yield, can achieve deep red light emission and near infrared light emission, are used for preparing deep red light and near infrared electroluminescent devices, and further have characteristics of simple synthesis, high yield, easy purification and the like. According to the present invention, the electroluminescent device has one or a plurality of light-emitting layers, and at least one layer of the light-emitting layer of the electroluminescent device contains one or a plurality of the compounds of the present invention, wherein further 0.1-100.0% by mass of the compound of the present invention is doped in the main body material so as to prepare the light emitting layer.

The present invention provides a method for synthetizing a 2-fluoro phenol compound shown in a formula IV. The phenol compound shown in the formula I is prepared into a 2-pyridine oxygroup arene compound shown in a formula II through an Ullmann reaction, the 2-pyridine oxygroup arene compound shown in the formula II is mixed with a palladium catalyst, a fluorinating reagent, an additive and an organic solvent, the mixture is stirred under the temperature of 30-160 DEG C to perform a fluorination reaction to obtain an ortho-position fluoridated 2-pyridine oxygroup arene compound shown in a formula III, and the ortho-position fluoridated 2-pyridine oxygroup arene compound shown in the formula III is prepared into the 2-fluoro phenol compound shown in the formula IV through the action of alkali. The method provided by the present invention has the advantages of mild reaction conditions, simplicity in operations, good substrate adaptability, high fluorination selectivity and the like. The 2-fluoro phenol compound is shown in the figure below.

The invention discloses a method for synthesizing apalutamide. The method includes carrying out condensation on N-methyl-2-fluorine-4-halogenated-benzamide compounds 1 and amino-1-cyclobutanecarboxylic acid hydrochloride 2 by means of Ullmann reaction to obtain to obtain intermediate compounds 3 and esterifying the intermediate compounds 3 to obtain intermediate compounds 4; carrying out cyclization by means of reaction on the intermediate compounds 4 and thiocyanide to obtain compounds 5; carrying out condensation by means of coupling the compounds 5 to obtain the apalutamide. The N-methyl-2-fluorine-4-halogenated-benzamide compounds 1 and the amino-1-cyclobutanecarboxylic acid hydrochloride 2 are used as starting materials. A path is shown, an R in the path represents alkyl, includes butis not limited to methyl or ethyl. The method has the advantages that route steps can be shortened to a great extent, the route efficiency can be improved, precious metal catalysts are omitted, and accordingly the process cost can be lowered; byproduct generation can be reduced, and accordingly the method is favorable for improving the purity of ultimate products.

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 relates to a preparation method for phenazine-1-carboxylic acid. The preparation method comprises the following steps: reacting aniline with chloral hydrate and hydroxylamine to produce alpha-oximidoacetanilide, treaing alpha-oximidoacetanilide with concentrated sulfuric acid to obtain isatin, reacting isatin with hydrogen peroxide so as to obtain 2-amino-3-nitrobenzoic acid and then carrying out Sandmeyer reaction to prepare 2-bromo-3-nitrobenzoic acid; and subjecting prepared 2-bromo-3-nitrobenzoic acid and aniline to Jourdan-Ullmann reaction so as to obtain substituted diphenylamine and carrying out ring closure to prepare phenazine-1-carboxylic acid. Compared with the prior art, the preparation method provided by the invention has the advantages of easy availability of raw materials, easy control of reaction, mild reaction conditions, easy post-treatment, high overall yield, as high as 32 to 47%, and suitability for industrial production; and compared with conventional method for production of shenqinmycin from ferment powder, the method provided by the invention enables cost to be greatly reduced.

The invention belongs to the technical field of photoelectric materials and particularly relates to an organic small molecular material based on spiro thioxanthene and an organic photoelectric device using the material as a light emitting layer. By using spiro thioxanthene as a framework unit, the organic small molecular material can be used for obtaining a target compound by virtue of friedel craft reaction and Ullmann reaction. The material is single in structure and certain in molecular weight and has good solubility and film forming property in common solvents. The spiro structure of the material can adjust the accumulation mode of molecules, so that an exciplex is effectively prevented from emitting light, therefore, the material is of profound significance in development of high-effect devices. The photoelectric device using the material as the light emitting layer has a good light emitting performance and can be applied to organic small molecular light emitting diodes.

The invention discloses an acridine-1, 2, 3-triazole type compound and a preparation method and application thereof. The preparation method of the acridine-1, 2, 3-triazole type compound comprises the following steps: 1) performing ullmann reaction by taking o-bromobenzoic acid and p-methoxyaniline as raw materials, taking potassium carbonate and copper powder as catalysts and taking isoamyl alcohol or n-amyl alcohol as a solvent to obtain a compound 1; 2) cyclizing the compound 1 with phosphorus oxychloride to prepare a compound 2; 3) dissolving the compound 2 in DMF (dimethylformamide) and performing nucleophilic substitution reaction with sodium azide to prepare a compound 3; and 4) taking p-methoxyphenylacetylene, dissolving in a tert-butyl alcohol/water solution, adding vitamin C sodium, copper sulfate pentahydrate and the compound 3 to react, performing suction filtration, and recrystallizing for preparation. In-vitro anti-tumor test results show that the acridine-1, 2, 3-triazole type compound has significant in-vitro anti-tumor activity against three subjects, namely MGC80-3, BEL-7404 and T24, has relatively good potential medicinal values, and is expected to be used for preparing various anti-tumor medicines.

The invention discloses a synthetic method of a Fuan mycin skeleton. The method adopts a compound of a formula 1 as a starting material, and a compound of a formula 3 is obtained by removing a silicon protection group in a two-step conversion manner by virtue of Sonogashira coupling reaction. The compound of formula 4 is also used as a starting raw material to obtain the compound of formula 6 by virtue of pinic oxidization and methyl esterification. The compound of formula 3 and the compound of formula 6 have the Sonogashira coupling reaction, a phenolic hydroxyl group is protected by a silicon group, methoxyl is selectively removed, an acetylenic bond is reduced, 6pai electrocyclization is carried out, the phenolic hydroxyl group is activated to have the secondary Sonogashira coupling reaction, the silicon-group protective group is removed, a Ullmann reaction is carried out, methyl protection, pinic oxidization and Fourier-krafz acylation are carried out, esters are hydrolyzed and condensated with amino acid, the acetylenic bond is hydrolyzed into ketone under the gold catalysis, thus obtaining Fuan mycin skeleton protected by pentamethoxyl, and synthesizing the Fuan mycin skeleton. The synthetic route is reasonable in design, raw materials are cheap and easy to get, the operation is simple and easy, a key reaction midbody is easy to modify, and the synthetic research of various polycyclic xanthenone natural products can be realized by utilizing the method.

The invention relates to application of a 2-pyridyl-beta ketone compound taking a structure of formula I as an additive in the process of promoting N-arylation reaction. In the invention, because the 2-pyridyl-beta ketone compound is used as the additive, the N-arylation reaction can be promoted well, and the catalyst used in the N-arylation reaction is just CuI which is cheap and available; and the additive 2-pyridyl-beta ketone compound is novel and is stable in air; compared with the same type of reaction reported in a literature, the ullmann reaction of iodo compounds can be performed at room temperature, and the temperature of a bromo compound reaction can be reduced by about 20 DEG C on average, thus the reaction condition is very mild and the application prospect is good.

The invention provides a method for synthesizing 2,3,4,5,6-pentafluorophenol. The method comprises the steps of (a) carrying out Ullmann reaction on bromopentafluorobenzene as shown in a formula (I) and benzyl alcohol in an inert gas atmosphere under the action of a catalyst cuprous iodide, a ligand and an inorganic base at 100-120 DEG C, and then generating a compound (II), and (b) reacting the compound (II) in an alcoholic solvent in the presence of hydrogen under the action of a palladium carbon catalyst at 20-50 DEG C, and removing the benzyl group, thereby obtaining a compound (III), namely, the 2,3,4,5,6-pentafluorophenol. The method is simple, low in cost and high in yield, and applicable to industrial production. The synthetic route of the method is as shown in specification.

The invention discloses a method for preparing diphenyl ether, which comprises the following steps of: generating saline solution of phenol through phenol and alkali; removing water in a system by back flow of benzene chloride; and under the condition of the existence of a catalyst, performing Ullmann reaction by dripping benzene chloride to generate a target compound. In the method, phenol is used as the raw material and is also used as a solvent; and the catalyst is a wet material of blue vitriol or cuprous chloride or a mixture of the wet materials of blue vitriol or cuprous chloride. The method has low production cost. No solid waste is generated. The yield is high. The product has high quality.

The invention discloses a new process for synthesis of asenapine. The asenapine is prepared through adopting a compound (18) as a key intermediate and carrying out the following steps that: 1.1, the compound 18 is subjected to a Ullmann reaction under a alkaline condition through adopting copper powder as a catalyst to generate a ether (19); 1.2, the ether (19) is subjected to a carbonyl reduction to obtain the target compound of the asenapine (1). The process has the following advantages that: cheap and available 2-bromobenzaldehyde is adopted as an initial raw material and is subjected to a condensation, a addition, a reductive amination and a intramolecular cyclization reaction, a aminomethylation, a open loop transposition and then loop closing, a demethylation and a Ullmann loop closing reaction to synthesize of the asenapine (1); cis-trans-isomer is subjected to a delicate transposition to obtain a trans-product, such that the process is simplified and easy to be operated; the raw material is easy to be obtained and has cheap price; each reaction is a normal reaction, and reaction conditions are mild; a total yield is substantially improved; production cost is reduced; a purity of the product is more than 99% through a detection by HPLC.

The invention discloses a method for synthesizing a 2-amino five-membered heterocyclic derivative. In the method, a route which is opposite to the conventional amination reaction is adopted, nitrogen polar reversed amine is taken as an amination reagent, a cheap cupric salt is taken as a catalyst, triphenylphosphine is taken as a ligand, lithium tert-butoxide is taken as an alkali, toluene is taken as a solvent, and the amination reagent undergoes a C-N coupling reaction with five-membered heterocyclic molecules, so that a five-membered heterocyclic two-position amination reaction is realized. The method has the characteristics of mild conditions, quick reaction, low cost, large-scale preparation, and the like. Due to the adoption of the method, the defects of harsh reaction conditions (high reaction temperature and long term), large quantity of side reactions, low yield, and the like existing in the conventional Ullmann reaction are avoided to a large extent, and the limitation on the use of a high-cost noble metal palladium catalyst is avoided.

The invention relates to a preparation method and application of a TPD hole transport material with crystallization resistance. TPD compounds of the invention have the following structural formula, wherein N-TPD-1:R1=Me, and R2=4-Me; N-TPD-2:R1=H, and R2=H; and N-TPD-3:R1=H, and R2=3-Me. TPD molecules formed by using 2,2'-dimethylbenzidine segments with larger stereoscopic effect as an intermediate connecting structure can generate obvious molecular twist effect, and 2,2'-dimethyl-4,4'-diiodobiphenyl is selected to serve as a key material and reacts with a diarylamine material under the ullmann reaction condition to obtain the target product of the invention. The TPD hole transport material is used for an organic photoconductor (OPC) of a laser printer. The TPD hole transport material has excellent crystallization resistance when keeping excellent hole transporting capacity, and can well overcome the defect that when the TPD material is used in an organic photoconductor device, crystallization of the TPD material makes the performance of the device worsened even makes the functions of the device lost.

The invention discloses a method for synthesizing 3-iodine-phenylcarbazole, which comprises the following steps of: synthesizing 9-phenylcarbazole by performing Ullmann reaction on carbazole serving as an initial raw material and phenyl iodide under the action of cuprous oxide serving as a catalyst; and synthesizing a target compound 3-iodine-phenylcarbazole by performing iodo-reaction on the 9-phenylcarbazole and iodine under the catalysis of iodic acid and concentrated sulfuric acid. The synthesis method has the characteristics of high yield, low production cost and low pollution, and is simple.

The invention discloses a method for synthesizing chiral p-methoxy benzylamine. The method, with chiral benzylamine as original starting material, replaces halogen atom with methoxy by amidocyanogen protection, para position halogenating and Ullmann reaction; and finally, the protection is removed to obtain chiral p-methoxy benzylamine with pure optical enantiomorphism. The method is low in production cost, easy in operation and applicable to industrial production.