22 results about "Tridentate ligand" patented technology

Disclosed are an organometallic compound, an organic light emitting device including the same, and an electronic device including the organic light emitting device. The organometallic compound is represented by Formula 1, in which M is a transition metal; L1 is a ligand represented by Formula 2 as disclosed herein; L2 is a monodentate ligand, a bidentate ligand, a tridentate ligand, or a tetradentate ligand; n1 is 1, 2, or 3, wherein, when n1 is 2 or more, two or more ligands L1 are the same as or different from each other; n2 is 0, 1, 2, 3, or 4, wherein, when n2 is 2 or more, two or more ligands L2 are the same as or different from each other; and L1 and L2 are different from each other. Formula 1 M(L1) n1 (L2) n2 .

The invention relates to the technical field of DNA intercalating agents, in particular to a near-infrared luminous ruthenium (II) complex, a preparation method thereof and application of the complex as a DNA intercalating agent. The preparation method comprises the following steps: firstly, preparing a precursor 4 '-(1H-benzimidazole-2-yl)-2, 2': 6 ', 2' '-terpyridyl; then, preparing a target precursor, namely, 2-(4-(anthracene-10-yl)-6-(pyrazine-2-yl) pyridine-2-yl) pyrazine as a ligand; and finally, synthesizing a complex [Ru (An-di (2-Pz) Py) (Bitpy)]. The complex is inserted into a DNA base pair as an intercalating agent, has very strong interaction with DNA, and provides basic research for researching the interaction mode of the ruthenium (II) polypyridine complex of the tridentate ligand and DNA and taking the ruthenium (II) polypyridine complex as a diagnosis and treatment reagent.

The application discloses a bisoxazoline pyridine functionalized porous organic polymer and preparation and application thereof; firstly, a styryl functionalized PyBox monomer (VPyBox) is designed and synthesized, and VPyBox, styrene and divinylbenzene are subjected to free radical polymerization under initiation of azobisisobutyronitrile in a certain proportion to obtain a series of porous organic polymers (POP-PyBox); the POP-PyBox can be used as a solid N , N , N tridentate ligand for Co-catalyzed hydrosilylation of arylalkynes with diphenylsilane; the heterogeneous catalyst system developed by the application has a catalytic activity comparable to that of a homogeneous catalyst reported in the literature, and the catalyst is easy to separate and recover; the recovered catalyst can be recycled for more than 6 times, which can not only greatly reduce the preparation cost of vinylsilane, but also simplify the post-treatment process and reduce the three wastes, and has a good practical application prospect.

The application belongs to the technical field of polymer material recycling and catalytic chemistry, and discloses a composite catalyst for PET waste bottle alcoholysis and a preparation method thereof. The composite catalyst is based on biomimetic enzyme engineering and dynamic covalent chemistry strategy, and comprises a binuclear metal cluster active center, a limited microenvironment shell layer and a dynamic covalent network skeleton. The binuclear metal cluster is constructed by zinc / cobalt / manganese ions and a tridentate ligand C9H8N2O4, the shell layer is a polydopamine derived functional polymer, and the skeleton is formed by cross-linking aromatic and aliphatic monomers through borate ester bonds. The application solves the performance degradation problem caused by the instability of the active center of the existing enzyme-like catalyst in industrial circulation application. The catalyst not only has the enzyme-like catalytic characteristics of high activity and high selectivity, but also realizes self-repairing after damage through the built-in multiple dynamic chemical mechanism, thereby providing a new catalytic material with performance and durability for efficient and sustainable chemical recycling of PET waste bottles.

The application discloses a kind of big steric hindrance C-C coupling palladium ligand and synthesis method, ligand is used naphthyl as the main group of stable ligand, this group provides big plane rigid configuration during ligand use, simultaneously, it provides big π electron for complex molecule to stabilize complex;In addition, the configuration of pyridofuran is used, the N coordination point of traditional N-P bidentate ligand is introduced O by furan this functional group in ortho position to adjust the chemical environment of intramolecular N coordination point, so as to modify the traditional N-P bidentate ligand to tridentate ligand, this change can effectively increase the penetration ability of Pd active center in actual ligand use to improve catalytic activity.

The invention relates to the technical field of research and development of tumor photodynamic therapy photosensitizers, photothermal therapy photothermal reagents and sonodynamic therapy sonosensitizers, and provides a preparation method and application of a binuclear metal complex of a polythiophene bridging ligand. The invention relates to a ruthenium complex TBLRu3a-TBLRu6a and a ruthenium complex TBLRu3b-TBLRu6b of a polythiophene bridged tri-bidentate ligand, a ruthenium complex TTLRu1-TTLRu12 of a polythiophene bridged bis-tridentate ligand, and an osmium complex TTLOs1-TTLOs6 of a polythiophene bridged bis-tridentate ligand, which are respectively designed and invented by the invention. The invention further relates to a preparation method of the ruthenium complex TBLRu3a-TBLRu6a and the ruthenium complex TBLRu3b-TBLRu6b of the polythiophene bridged tri-bidentate ligand and a preparation method of the ruthenium complex TTLRu1-TTLRu12 of the polythiophene bridged bis-tridentate ligand. The polythiophene bridged metal complex has extremely high stability and excellent two-photon absorption characteristic, has excellent biotoxicity and photothermal conversion capability under the action of infrared exciting light, and can induce A549R cell apoptosis. The polythiophene bridged metal complex provided by the invention is a potential novel two-photon absorption photodynamic therapy photosensitizer, a photothermal therapy photothermal reagent and a sonodynamic therapy sonosensitizer, and has a wide application prospect in photodynamic therapy, photothermal therapy and sonodynamic therapy of tumors.

The application discloses a synthesis method of a deuterated aryl compound promoted by a tridentate ligand. An aryl compound shown in formula I is subjected to a deuterium substitution reaction with a deuterium source reagent in an organic solvent reaction medium under catalysis of a complex formed by a palladium catalyst and a tridentate ligand, and a silver salt is used as a reaction aid. The reaction product is separated and purified to obtain a deuterated aryl compound shown in formula II. The tridentate ligand has high reactivity in a Pd-catalyzed HIE reaction and can form a stable catalyst.

The invention belongs to the technical field of high polymer material recovery and catalytic chemistry, and discloses a composite catalyst for alcoholysis of a PET waste bottle and a preparation method of the composite catalyst. The composite catalyst is based on bionic enzyme engineering and a dynamic covalent chemical strategy and comprises a binuclear metal cluster active center, a confinement microenvironment shell layer and a dynamic covalent network framework, a binuclear metal cluster is constructed by zinc / cobalt / manganese ions and a tridentate ligand C9H8N2O4, the shell layer is a functional polymer derived from polydopamine, and the dynamic covalent network framework is constructed by zinc / cobalt / manganese ions and a tridentate ligand C9H8N2O4. And the skeleton is formed by cross-linking aromatic and aliphatic monomers with boric acid ester bonds. According to the invention, the problem of performance degradation caused by active center instability of the existing enzyme-like catalyst in industrial cyclic application is solved. The catalyst not only has high-activity and high-selectivity enzyme-like catalytic characteristics, but also realizes self-repair after damage through built-in multiple dynamic chemical mechanisms, and provides a novel catalytic material with both performance and durability for efficient and sustainable chemical recovery of PET waste bottles.

A porous coordination network is represented by the following formulas (I) to (VIII), in which M2+ is a divalent metal ion, M3+ is a trivalent metal ion, L1a and L1b are tridentate ligands having hexaazaphenalenyl, L2a and L2b are bidentate or tridentate ligands containing a carboxy group, L3− is a tertiary ligand ion that is an anion of triazole or a triazole derivative, and Y is a cation.

The invention provides a chiral amino-pyridine-phosphine tridentate ligand, a manganese complex as well as a preparation method and application of the chiral amino-pyridine-phosphine tridentate ligand and the manganese complex. Specifically, the invention relates to a chiral amino-pyridine-phosphine tridentate ligand as shown in a formula I. The ligand can be complexed with high-yield metal to form a metal complex, and the metal complex can be used for catalyzing asymmetric hydrogenation reaction. The metal complex catalyst provided by the invention has high catalytic activity and shows excellent enantioselectivity in an asymmetric hydrogenation reaction.

The invention belongs to the field of organic chemical ligands, and particularly discloses an oxazoline-derived tridentate N, N, N-ligand and a synthesis method and application thereof.Chiral oxazoline and quinoline sulfonamide are used as core frameworks, the tridentate N, N, N-ligand of a novel structure is developed, the ligand is shown in the general formula (I), and the structural formula (I) is shown in the description. The specific compound shown in the general formula (I) is successfully applied to the asymmetric catalytic reaction. The novel chiral ligand has abundant structural characteristics, induces excellent enantioselectivity, and can be widely applied to three-dimensional convergent free radical asymmetric cross-coupling reaction of tertiary halogenated alkane and (hetero) arylamine. The method has important guiding significance for developing a novel catalytic system to solve other types of three-dimensional convergent free radical asymmetric reactions.

The invention discloses a high-performance polymer interpenetrating network and a preparation method thereof. The preparation method comprises the following steps: 1) mixing alkynylated polyethylene glycol, dimethyl ethylenediamine, trimethylolpropane tripropiolate and a monodentate ligand in a first solvent for reaction, adding palladium acetate and the tridentate ligand for coordination reaction after the reaction is finished, and removing the first solvent after the coordination reaction is finished to obtain a polyethylene glycol network; and 2) in the presence or absence of a catalyst, mixing the polyethylene glycol network, polyol, a chain extender, polyisocyanate and a cross-linking agent to react to obtain a polyethylene glycol-polyurethane polymer interpenetrating network, and curing to obtain the high-performance polymer interpenetrating network. According to the invention, the mechanical property and energy absorption capacity of polyurethane and polyethylene glycol can be enhanced, so that the material can bear higher stress level, the toughness of the material is improved, and the maximum extensibility and plastic deformation capacity of the material are improved while the original strength of a polymer is maintained.

Provided is a novel hydrosilylation reaction catalyst using inexpensive and abundant iron, which is suitable for use in the silicone industry. An iron complex compound represented by formula (1): (L) FeAn1 (1) [in the formula, n1 is 2 or 3, A is each independently-OR1,-OC (= O) R2, or-NR3R4; r < 1 >, R < 2 >, R < 3 > and R < 4 > are independently alkyl groups which have substituent groups and have 13 to 24 carbon atoms, or-Si (CH3) 2-[OSi (CH3) 2] m-CH3, and m is an integer of 0 to 11; when two of A are-OR1 and R1 is a hydrocarbon group having 13 to 24 carbon atoms and optionally having a substituent, R1 may be linked to each other to form a cyclic structure-O-C (Ra)-O-, and Ra is a hydrocarbon group having 13 to 24 carbon atoms and optionally having a substituent; l represents a tridentate ligand having a specific structure. ].

The invention relates to the technical field of organic synthesis chemistry and asymmetric catalysis, in particular to an amino acid-derived N, N, N-tridentate ligand and a preparation method and application thereof.The ligand has the structure shown in the general formula (I) or comprises an acyl / sulfonyl unit part and an amino acid-derived diamine unit, wherein R1 is selected from substituted or unsubstituted aryl, heteroaryl, alkyl or styryl, and the diamine unit is derived from natural or artificial amino acid. The ligand is wide in source, simple and convenient to synthesize, diverse in structure, low in price and easy to obtain, can be coordinated with a copper catalyst to be used for catalyzing S-functionalization and other asymmetric free radical reactions of sulfenamide, shows excellent catalytic activity and enantioselectivity, has the yield of 80% or above and the enantiomeric excess (ee) value of 90% or above, and is suitable for industrial production. The quinine alkaloid ligand overcomes the defects of single structure, high price and difficulty in modification of the existing quinine alkaloid ligand.

The invention relates to an ionic iridium (III) complex based on (+ 3, + 2, + 1)-[Ir (NCN / NNN) (CN) (R)] < + / 2 + > configuration and a preparation method and application thereof, and the preparation method comprises the following steps: 1, reacting a tridentate ligand NCN / NNN with iridium chloride trihydrate in a specific solvent to obtain a first intermediate; 2, reacting the obtained first intermediate with a bidentate ligand HCN to obtain a second intermediate; and step 3, substituting the second intermediate with a monodentate cyanide ligand R to obtain a target product. The complex is efficient in synthesis method, has good photophysical properties, and has low cytotoxicity and high phototoxicity index for lung cancer cells, colon cancer cells and liver cancer cells, which shows that the complex has good application prospects in the field of metal anti-cancer drugs.

This invention discloses a cyclohexyltriamine organic ligand and its synthesis method, belonging to the field of organic chemistry. Using cis,cis-1,3,5-cyclohexyltricarboxylic acid as a starting material, this invention first synthesizes cis,cis-1,3,5-cyclohexyltriamine (TachH3) through a multi-step reaction. Then, using cis,cis-1,3,5-cyclohexyltriamine as a starting material, it synthesizes cyclohexyltriamine organic ligands with structural formulas as shown in Formula I (compounds 5A-5D) and Formula II (compounds 6A-6D). The method of this invention enables large-scale, low-cost preparation of TachH3 and its extended ligands. The cyclohexyltriamine organic ligands provided by this invention are rigid tridentate ligands, which can be widely applied in the basic research and application exploration of organometallic ligands, and have broad application prospects.

The invention provides a pincerlike tridentate cobalt complex containing imidazo [1, 2-alpha] pyridyl as well as a preparation method and application of the pincerlike tridentate cobalt complex, and belongs to the technical field of organic chemical synthesis. The pincerlike tridentate cobalt complex comprises four symmetric structures and three asymmetric structures, and the structural formula is shown in the specification. According to the preparation method, 2, 6-diacetylpyridine is taken as a starting material, and the difference is as follows: a symmetric bis-imidazo [1, 2-alpha] pyridyl pincerlike tridentate ligand is constructed by bromination and cyclization reaction on two sides of a symmetric complex; one side of the asymmetric complex is brominated and cyclized to form an imidazo [1, 2-alpha] pyridine structure, and acetyl on the other side of the asymmetric complex is subjected to condensation reaction with amino, so that the asymmetric pincerlike tridentate ligand is obtained. The two ligands respectively react with anhydrous cobalt chloride to successfully prepare seven target cobalt complexes. In catalytic performance research, some cobalt complexes show certain catalytic activity in styrene hydrosilylation reaction, and show good application potential.

This invention relates to the field of organic synthesis technology, and in particular to a method for preparing N,S-acetal compounds based on a transition metal catalytic system. The method uses a chiral complex formed by a chiral binaphthyl-imidazoline tridentate ligand and a transition metal as a catalyst to catalyze asymmetric nucleophilic addition reactions of thiols, thiophenols, and pyrazolinone imine compounds. This method solves the problems of the scarcity of chiral transition metal complexes and the harsh reaction conditions of some catalytic systems in existing asymmetric nucleophilic addition reactions of thiols to imines. Simultaneously, the method yields chiral N,S-acetal compounds with high yields and excellent enantioselectivity.

The invention relates to the technical field of polymer synthesis, and discloses a chiral zinc-based catalyst and a preparation method and application thereof.The preparation method comprises the steps that a phenylenediamine derivative and a halogenated carboxylic acid compound are taken to react, and a halogenated benzimidazole derivative is obtained; carrying out nucleophilic substitution reaction on the halogenated benzimidazole derivative and an aminophenol compound in an organic solvent to obtain a tridentate ligand; the tridentate ligand and a zinc source compound are subjected to a complexation reaction in an organic solvent to obtain the chiral zinc-based catalyst. The chiral zinc-based catalyst has a tridentate chiral active center with an adjustable coordination environment, and can induce the monomer to be inserted in a specific stereoregularity mode in the ring-opening polymerization process of the lactone monomer, so that the stereoregularity of the polyhydroxyalkanoate is improved; according to the invention, on the premise of ensuring high monomer conversion rate, collaborative regulation of polymer molecular weight and molecular weight distribution is realized, and preparation of polyhydroxyalkanoate with high molecular weight, narrow molecular weight distribution and high stereoregularity is facilitated.

The invention provides a preparation method of an axially chiral diaryl nitrogen oxygen alcohol compound, which takes racemic axially chiral diaryl nitrogen oxygen ketone as a raw material, takes chiral tridentate PNN ligand and Mn (CO) 5Br as catalysts, takes alcohol as a solvent, and carries out hydrogenation reaction under a homogeneous catalysis system to obtain the axially chiral diaryl nitrogen oxygen alcohol compound with high yield (gt; 99%), a high ee value (gt; 99%) and a high d.r. Value (gt; 20: 1) obtaining the axially chiral diaryl nitrogen oxygen alcohol compound. The reaction activity is high, and the reaction conditions are mild. The obtained axially chiral diaryl nitrogen oxygen alcohol can be used as Lewis base for catalyzing an addition reaction of 2, 3-indoledione and indole, and a corresponding addition product is obtained with the yield of 96% and the ee value of 98%.

The invention discloses a biphenyl type tridentate ligand iridium complex and application of the biphenyl type tridentate ligand iridium complex in asymmetric hydrogenation of alpha, beta-unsaturated aldehyde compounds. The preparation method of the biphenyl type tridentate ligand iridium complex comprises the following steps: S1, reacting a metal iridium precursor and a biphenyl type tridentate ligand for 0.3-0.7 h in absolute ethyl alcohol in a glove box environment of an argon atmosphere, and replacing the argon atmosphere with hydrogen for 3-5 times; s2, the reaction mixture is subjected to a reaction for 0.3-0.7 h under the normal-pressure hydrogen condition; s3, concentrating the reaction mixture under high vacuum to obtain a product. The preparation method is simple and good in stability, and when the biphenyl type tridentate ligand iridium complex is used as a catalyst for non-hydrogenation reaction of alpha, beta-unsaturated aldehyde compounds, the biphenyl type tridentate ligand iridium complex shows very high catalytic activity and chemical selectivity.

This invention provides a method for catalytic hydrogenation cracking of carbamate compounds and a method for preparing a ruthenium-nitrogen tridentate ligand catalyst. The catalytic hydrogenation cracking method uses a ruthenium-nitrogen tridentate ligand catalyst as the catalyst. In a reaction system containing an organic base and toluene, carbamate compounds undergo hydrogenation cracking under a hydrogen atmosphere to produce amines and alcohols. The preparation method includes three steps: preparing a diphenylphosphino-acetaldehyde hydrobromide dimer, preparing the phosphino-nitrogen ligand, and preparing the ruthenium-nitrogen tridentate ligand catalyst. This invention uses hydrogen as a green reducing agent to crack carbamate compounds into high-value alcohols and amines. The ruthenium catalyst used exhibits highly efficient catalytic activity in the hydrogenation cleavage of amide bonds. This method has high catalytic efficiency and broad substrate applicability.