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669 results about "Substituent" patented technology

In organic chemistry and biochemistry, a substituent is an atom or group of atoms which replaces one or more hydrogen atoms on the parent chain of a hydrocarbon, becoming a moiety of the resultant new molecule. The terms substituent and functional group, as well as other ones (e.g. side chain, pendant group) are used almost interchangeably to describe branches from a parent structure, though certain distinctions are made in the context of polymer chemistry. In polymers, side chains extend from a backbone structure. In proteins, side chains are attached to the alpha carbon atoms of the amino acid backbone.

Electroluminescent material and organic electroluminescent device comprising same

The invention belongs to the technical field of organic electroluminescence, and particularly provides an electroluminescent material and an organic electroluminescent device comprising the same, the electroluminescent material comprises a combination of a first organic compound and a second organic compound, the first organic compound has a structure as shown in a formula I, and the second organic compound has a structure as shown in a formula II; the second organic compound has a structure as shown in a formula II; through structural design of the first organic compound and the second organic compound, particularly introduction of a substituent group at a specific site, and synergistic compounding of the two organic compounds, the material has higher glass transition temperature Tg and excellent thermal stability while having excellent photoelectric properties and carrier transport properties. The electroluminescent material is used for the organic electroluminescent device, is especially suitable for a luminescent layer, and can effectively ensure the uniformity of a deposited film, so that the thermal stability of the device is excellent, and the high-temperature test life is remarkably prolonged.
Owner:BEIJING DINGCAI TECHNOLOGY CO LTD

Methods to produce organotin compositions with convenient ligand providing reactants

Synthesis reactions are described to efficiently and specifically form compounds of the structure RSnL3, where R is an organic ligand to the tin, and L is hydrolysable ligand or a hydrolysis product thereof. The synthesis is effective for a broad range of R ligands. The synthesis is based on the use of alkali metal ions and optionally alkaline earth (pseudo-alkaline earth) metal ions. Compounds are formed of the structures represented by the formulas RSn(C≡CSiR′3)3, R′R″ACSnL3, where A is a halogen atom (F, Cl, Br or I) or an aromatic ring with at least one halogen substituent, R′R″(R″′O)CSnL3 or R′R″(N≡C)CSnZ3.
Owner:INPRIA CORP

Resin, resin composition, cured object, film, coating fluid composition, prepreg, electronic substrate, and method for producing resin

PCT designated stageWO2025263503A1Polymer sciencePolycarbonate
Provided is a resin comprising a polycarbonate structural unit represented by formula (UN1) and a terminal structure having a vinyl group (with the proviso that any polycarbonate structural unit represented by formula (A1) and any terminal structure represented by formula (A2) are excluded). [In formula (UN1), Ux is a single bond or a divalent group, R1 and R2 are each independently a substituent, n is 0, 1, 2, 3, or 4, m is 0, 1, 2, 3, or 4, and * indicates a linking bond. Symbol * in formula (A1) indicates a linking bond and symbol * in formula (A2) indicates a linking bond to the repeating unit located at an end of the resin.]
Owner:IDEMITSU KOSAN CO LTD

Organic electroluminescent materials and devices

A compound having a first ligand LA comprising a structure of Formula I,is provided. In Formula I, moiety B is a monocyclic ring or a polycyclic fused ring system; each of X1 to X6 is C or N; Y is a linking group; K is a direct bond or a linking group; each substituent is hydrogen or a General Substituent defined herein; and at least one of the following conditions is true: (1) an RA substituent is joined with an RB substituent to form a ring AB, which may be substituted by one or more RAB substituents; or (2) X5 and X6 are C, and the corresponding two RA substituents are joined to form a cyclic moiety A1, which may be substituted by one or more RA1 substituents; and moiety B is a polycyclic fused ring system. Formulations, OLEDs, and consumer products containing the compound are also provided.
Owner:UNIVERSAL DISPLAY CORP

Organic light emitting device

An organic light emitting device having improved driving voltage, efficiency and lifetime, the device comprising a light emitting layer including one or more compounds of Chemical Formula 1, one or more compounds of Chemical Formula 2, and one or more compounds of Chemical Formula 3:wherein: X′1 is N and X′2 is O, or X′1 is O, and X′2 is N; X″ is O or S; one of R′1 to R′7 is linked with Chemical Formula 2A:one of R″1 to R″10 is linked with Chemical formula 3A, and the rest are hydrogen or deuterium:Ar1, Ar2, Ar′1, Ar′2, Ar″1, Ar″2 are each independently a substituted or unsubstituted C6-60 aryl or C2-60 heteroaryl containing one or more of N, O and S; and the other substituents are as defined in the specification.
Owner:LG CHEM LTD

Organic electroluminescent materials and devices

A compound having a ligand LA of Formula I,is disclosed. In Formula I, ring B is a 5-membered or 6-membered ring; K is a direct bond, O, or S; X is O, S, Se, NR, CRR′, SiRR′, or GeRR′; R1 and R2 are each independently selected from a variety of substituents; each R, R′, RA, and RB is independently hydrogen or a substituent; LA is coordinated to a metal M selected from Os, Ir, Pd, Pt, Cu, Ag, or Au by the dashed lines; any two adjacent of R1, R2, R, R′, RA, or RB can be joined or fused to form a ring, with the proviso that when ring B is a 6-membered ring, two RB substituents are not joined to form a fused 6-membered aromatic ring. Organic light emitting devices, consumer products, formulations, and chemical structures containing the compounds are also disclosed.
Owner:UNIVERSAL DISPLAY CORP

Monosubstituted cyclic ligand, and preparation method therefor and use thereof, and monosubstituted cyclic rare earth complex, and preparation method therefor and use thereof

PCT designated stageWO2026002296A1Organic chemistry methodsAnalysis using nuclear magnetic resonanceTyrosineTyrosine radical YD
Provided in the present invention are a monosubstituted cyclic ligand, and a preparation method therefor and a use thereof, and a monosubstituted cyclic rare earth complex, and a preparation method therefor and a use thereof, relating to the technical field of contrast agents. The monosubstituted cyclic ligand uses the ring structure of 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid as a parent ring, and an R-modified tyrosine group increases the structural rigidity of the parent ring and improves the stability of the complex. Direct introduction of benzyloxy-, ethoxy- or hydroxy-substituted benzyl substituents on the carbon atoms of the DOTA ring maintains the original eight-coordination structure, and improves the relaxation rate of the complex, in addition to increasing the stability of the complex. Compared with Gd-DOTA, both the kinetic inertia and the relaxation rate are improved. The complex formed by the ligand and Gd(III) or Eu(III) is highly stable, and has strong specificity for the liver or for inflammation, and causes no obvious damage to the heart, the liver, the spleen, the lungs or the kidneys.
Owner:WENZHOU INST UNIV OF CHINESE ACAD OF SCI

Polycyclic aromatic compound

To provide a compound useful as a material for an organic device such as an organic electroluminescent element.SOLUTION: Polycyclic aromatic compounds having a structure consisting of one or two or more structural unit (s) represented by the formula (1); (Ra1 to Ra3, Rb1 to Rb4, Rc1 to Rc4 are independently H or substituents; provided that at least one of Rc1 to Rc4 is a group represented by the formula (1-1); Y1 is B; and are independently> N-RNX; RNX is substituted / unsubstituted aryl; at least one of the aryl ring and the heteroaryl ring in the above structure may be fused with at least one cycloalkane, and H in the above structure may be replaced by D. X1 X2. ) SELECTED DRAWING: None
Owner:SK MATERIALS JNC CO LTD +1

Organic electroluminescent materials and devices

A compound is disclosed that has a metal coordination complex structure having at least two ligands coordinated to the metal; wherein the compound has a first substituent R1 at one of the ligands' periphery; wherein a first distance is defined as the distance between the metal and one of the atoms in R1 where that atom is the farthest away from the metal among the atoms in R1; wherein the first distance is also longer than any other atom-to-metal distance between the metal and any other atoms in the compound; and wherein when a sphere having a radius r is defined whose center is at the metal and the radius r is the smallest radius that will allow the sphere to enclose all atoms in the compound that are not part of R1, the first distance is longer than the radius r by at least 2.9 A.
Owner:UNIVERSAL DISPLAY CORP

Organic electroluminescent materials and devices

The invention relates to organic electroluminescent materials and devices. There is provided a compound having a first ligand LA having a structure of Formula I wherein consecutive two of X1 to X8 are C and bonded to the structure of Formula II in Formula I, Part A is a monocyclic or polycyclic fused ring system; each of Z1 to Z2 and X1 to X12 is C or N; each of Y1 and Y2 is a linking group; k is a direct bond or a linking group; each substituent is hydrogen or a universal substituent as defined herein; and LA is coordinated with the metal M. Also provided is a compound having the formula Ir (LA *) x (LB *) y (LC *) z as defined herein. Formulations, OLEDs and consumer products containing these compounds are further provided.
Owner:UNIVERSAL DISPLAY CORP

Carbazole compounds and their therapeutic use in treating respiratory infections

This invention relates to the use of compounds of formula (I), or pharmaceutically acceptable salts or solvates thereof, in the treatment or prevention of mycobacterial infections, wherein: one of R2 and R3 is H, and the other is (CR) a R b ) n Y; Y is selected from CO2R c CN and CONR e R f R4 is selected from H, halogens, CN, alkyl and alkoxy groups; R6 is selected from H, F, Br, I, COOH, CN, COR. d CO2R d Alkyl, haloalkyl, alkoxy, haloalkoxy, nitro, OH, SR d SOR d SO2R d SO2NR d R d NHSO2R d aryl and heteroaryl groups, wherein the aryl or heteroaryl group is optionally substituted by one or more substituents selected from alkyl, alkoxy, halogen, haloalkyl, and haloalkoxy groups; R7 is selected from H, halogen, alkyl, and alkoxy groups; R9 is selected from H, COR... d Alkyl, haloalkyl, aryl, CO-aryl, CO-haloaryl, aralkyl and haloaralkyl; R1, R5 and R8 are H; each R a R b R c R d R e and R f The compounds are independently selected from H, alkyl, and haloalkyl groups; n is 1 to 6. Other aspects of the invention relate to subgroups of compounds of formula (Ia), pharmaceutical compositions comprising such subgroups, and their use in the treatment or prevention of mycobacterial infections.
Owner:UCL BUSINESS LTD +1

Synthesis method of thioether ligand and palladium-catalyzed 2-aryl indole compound

The invention provides a synthesis method of a thioether ligand and a palladium-catalyzed 2-aryl indole compound, and designs an application of the biphenyl thioether ligand and a palladium catalyst in preparation of the 2-aryl indole compound. Indole and arylboronic acid are subjected to a reaction under the action of a palladium catalyst and a biphenyl sulfide ligand, and the structural formula of the biphenyl sulfide ligand is shown in the specification. Ar is phenyl, furyl, thienyl, naphthyl or phenyl substituted by one or more substituent groups; r1 is methyl, methoxyl, fluorine atom, chlorine atom, bromine atom or methyl ester group; r2 is the same or different and is methyl, ethyl, isopropyl, isobutyl, cyclohexyl, benzyl, n-butyl or n-hexyl; r3 is alkoxy, alkylthio, substituted amino or halogen; the palladium catalyst is a divalent palladium compound.
Owner:JIUZHOU PHARMACEUTICAL (HANGZHOU) CO LTD

Compound, light-emitting element material, organic electroluminescent element, and electronic device

A compound having a structure represented by general formula (1). In general formula (1), R101 to R121 are each independently a hydrogen atom or a substituent, where R101 to R121 are not a substituted or unsubstituted N-carbazolyl group. The structure represented by general formula (1) has at least one group represented by general formula (2). In general formula (2), at least one of X1-X5 is represented by a nitrogen atom.
Owner:TORAY INDUSTRIES INC

Organic Compound And Method For Synthesizing The Same

A 1,10-phenanthroline derivative or a 2,2′-bipyridine derivative having different substituents at symmetrical positions is provided. An organic compound represented by General Formula (G1) or General Formula (G2) below is provided. In General Formula (G1) or (G2) below, any one of X2 to X5 or any one of X6 to X9 represents a halogen or a trifluoromethanesulfonyl group, and the others represent hydrogens. Any one of R2 to R5 or any one of R6 to R9 represents an aliphatic cyclic amino group. Note that a carbon to which the halogen or the trifluoromethanesulfonyl group is bonded and a carbon to which the aliphatic cyclic amino group is bonded are at line-symmetrical positions in a main skeleton (a 1,10-phenanthroline skeleton or a 2,2′-bipyridine skeleton).
Owner:SEMICON ENERGY LAB CO LTD

Organic compound and organic light-emitting element

The present disclosure is characterized by being represented by general formula G1. In general formula G1, ring C is an aromatic hydrocarbon ring or a heteroaromatic ring. A11-A15 and A21-A25 are each independently selected from the group consisting of CRA and a nitrogen atom. RA represents a hydrogen atom or a substituent of various types. When RA exists in a quantity of more than one, the plurality of RAs may be the same or different from each other. X1 and X2 are each independently selected from the group consisting of an oxygen atom, a sulfur atom, a tellurium atom, a selenium atom, and NRB. RB represents a hydrogen atom or a substituent of various types. When RB exists in a quantity of more than one, the plurality of RBs may be the same or different from each other. RAs adjacent to each other or RA and RB adjacent to each other are optionally bonded to form a ring.
Owner:CANON KK

Preparation method of (6S, 9R)-3-oxo-3, 5, 6, 7, 8, 9-hexahydro-2H-6, 9-bridged imine cyclohepta [c] pyridazine-10-carboxamide derivative

The present invention relates to a process for the preparation of a compound of formula (I), or a pharmaceutically acceptable salt or solvate thereof, where: Ring B is a monocyclic aromatic group; the present invention relates to a halogen-containing compound optionally substituted by one or more substituents selected from the group consisting of halogen, CN, OH, alkyl, haloalkyl, cycloalkyl, halocycloalkyl, hydroxycycloalkyl, O-cycloalkyl, alkoxy, haloalkoxy, heterocycloalkyl, O-heterocycloalkyl, aryl, heteroaryl, O-aryl, NHCO-alkenyl, NHCO-aryl,-(CH2) q-O-heteroaryl, CONH-aryl, aryloxy-alkyl, O-aralkyl, and CO2-alkyl, wherein the aryl, heteroaryl, heterocycloalkyl, O-cycloalkyl, NHCO-aryl,-(CH2) q-O-heteroaryl, CONH-aryl, aryloxy-alkyl, O-aralkyl, and O-aryl groups are each optionally further independently selected from the group consisting of halogen, alkyl, haloalkyl, alkoxy, NHCO-alkyl, NR < 13 > R < 13 > ', SO2-alkyl, CN, hydroxyalkyl, CONR < 14 > R < 14 >', alkyl-NR < 15 > R < 15 > ', heterocycloalkyl, alkyl-heterocycloalkyl, alkyl-cycloalkyl, wherein, in the latter group, the cycloalkyl is optionally further substituted by one or more halogen, haloalkyl, alkyl or alkoxy groups, and wherein, in the latter group, the cycloalkyl is optionally further substituted by one or more halogen, haloalkyl, alkyl or alkoxy groups, and wherein, in the latter group, the alkyl is optionally further substituted by one or more halogen, haloalkyl, alkyl or alkoxy groups; m is an integer from 0 to 3; p and q are each independently 0 to 3; y is CR10R10 ', wherein R10 and R10' are each independently selected from the group consisting of H, F, alkyl, and haloalkyl; ra and Rb are each independently selected from H and alkyl; r6 is selected from H, alkyl, cycloalkyl and hydroxyalkyl; the present invention relates to a process for the preparation of a compound of formula (I) wherein B is as defined above, and R13, R13 ', R14, R14', R15, R15 ', and R16 are each independently selected from H, alkyl, haloalkyl, and alkoxyalkyl, comprising the steps of: (i) treating a compound of formula (IV) with a compound of formula (V) to form a compound of formula (III) wherein B in formula (IV) is as defined above, R21 in formula (V) is phenyl optionally substituted by 1 to 5 fluorine atoms; and (ii) treating the compound of formula (III) with a compound of formula (II) in which Y, Ra, Rb and R6 are as described above, or a pharmaceutically acceptable salt thereof, to form a compound of formula (I). Other aspects of the invention also relate to intermediates useful in said processes.
Owner:PATHIOS THERAPEUTICS LTD

Thermoplastic resin and optical member including same

PCT designated stageWO2026088788A1Optical elementsPolymer scienceRefractive index
The purpose of the present invention is to provide: a polycarbonate resin that has a high refractive index, low birefringence, and a glass transition temperature that is suited to use in an optical lens; and an optical member that includes the polycarbonate resin. This thermoplastic resin includes repeating units represented by formula (1), formula (2), and formula (3), the repeating units represented by formula (1) being 70.0–98.0 mass% of all the repeating units, and the repeating units represented by formula (3) being 0.1–3.0 mass% of all the repeating units. (In formula (1), R1–R4 each independently represent a hydrogen atom, a halogen atom, a C1–20 substituent that may include an aromatic group, or a C2–20 substituent that includes a heterocycle, and m1 and m2 each independently represent 0 or 1.) (In formula (2), n1 and n2 each independently represent 0 or 1.) (In formula (3), X represents a C4–14 alkylene group.)
Owner:TEIJIN LTD

Inhibitor for efficiently separating copper and sulfur under low-alkalinity condition, flotation reagent and flotation method

The invention relates to an inhibitor for efficiently separating copper and sulfur under a low-alkalinity condition, a flotation reagent and a flotation method. The inhibitor is a compound as shown in a formula I (formula I), wherein R1, R2, R3 and R4 are respectively and independently selected from one of-R5X,-X,-H and-N + R6, R5 is alkyl of C1-C10, naphthenic base of C3-C10 or heterocyclic group of C3-C10, and the ring of the heterocyclic group is provided with or not provided with a substituent group; x is one of F, Cl, Br, I, tertiary amine positive ions, nitro, cyano, sulfo, formyl, acyl and carboxyl; r6 is a C1-C5 alkyl group or a C3-C5 cycloalkyl group; the inhibitor is low in viscosity and good in fluidity, pyrite and chalcopyrite in complex copper sulfide ore copper-sulfur ore can be effectively separated under the low-alkalinity condition, and the separation effect is remarkable.
Owner:CENT SOUTH UNIV

N-substituted derivatives of l-(l-phenyl-3-aryl)-lff-pyrazol-4-yl)methanainine, method for their production and their applications

The subject of the invention is N-substituted derivatives of l-(l-phenyl-3-aryl)-lH-pyrazol-4-yl)methanamine with the general formula 1, where ¥ represents CH or N, R1 represents hydrogen, R2 represents no substituent, R3 represents hydrogen, while R4 represents N-propylbenzamide, benzo[b]furan, dihydrobenzo [b] furan, methylenedioxybenzene, ethyl benzoate, or propyl benzoate, substituted accordingly, their method of production and application, and the method of obtaining and application of N-substituted derivatives of l-(l-phenyl-3-aryl)-IH-pyrazol-4-yl)methanamine with the general formula 1, where Y represents C, CH, or N, R1 represents hydrogen or a methyl group, R2 represents a methyl group or no substituent, R3 represents hydrogen or a methyl group, while R4 represents dimethylpyrazole, methylpyrazole, dimethylimidazo[l,2-a]pyrimidine, or isopropoxybenzene, substituted accordingly. The compounds that are the subject of the invention are obtained through reductive amination using borohydride derivatives as the reducing agent, advantageously sodium triacetoxyborohydride, in the amount of 1.4-2.0 eq, amine in the amount of 1.0-1.1 eq, advantageously in slight excess, base, advantageously triethylamine in the amount of 1.0-1.1 eq (in the case of using amine in the form of hydrochloride), and the starting aldehyde. The reaction is conducted in a nonpolar solvent environment, advantageously dichloroethane at a concentration of about 0.1 M. The crude product is purified by column chromatography on silica gel using a methanol in dichloromethane mixture as the eluent, in concentration ranges from 2% to 5%. In order to obtain a solid form and improve the physicochemical parameters, the free bases are converted into hydrochloride form, and then crystallized from a polar solvent, advantageously ethanol or propanol.
Owner:UNIWERSYTET MEDYCZNY W LUBLINIE

Polymer, photoresist composition, and method of forming pattern

A polymer comprising a first repeating unit derived from a polymerizable compound comprising an aromatic group wherein the aromatic group is substituted by: a first substituent comprising an ethylenically unsaturated double bond; a second substituent as a hydroxyl group; and a third substituent comprising a carbonyl group, wherein the carbonyl groups of the first substituent, the second substituent and the third substituent are each bonded to different carbon atoms of an aromatic group; and a second repeating unit comprising an alkali labile group, wherein the first repeating unit and the second repeating unit are structurally different.
Owner:杜邦电子材料国际有限责任公司

Dehydrogenation catalysts for polymer precursors and formic acid formed therefrom

This invention provides a dehydrogenation catalyst that enables the production of hydrogen by dehydrogenating formic acid using a continuous process with higher efficiency than conventional methods, as well as a polymer precursor that can optimally form the catalyst and a formic acid dehydrogenation catalyst formed therefrom. [Solution] The polymer precursor has a structure represented by the following general formula (1). TIFF2026073992000060.tif50163 (A and B are independently groups comprising a 5-membered or 6-membered heterocycle or oxime structure which may have substituents, Z is a 5-membered or 6-membered aromatic ligand, M is a Group 8 noble metal element, R 1 R is a hydroxyl group, an alkenyl group or alkynyl group having 1 to 12 carbon atoms, 2 (where is a halogen atom, hydrogen atom, formic acid, or water molecule, X is an anion, and n is a natural number between 1 and 12)
Owner:DAIDEN CO LTD

Synthetic carbamate compound based on 3-substituted dioxazolone as well as preparation method and application of synthetic carbamate compound

The invention discloses a synthetic carbamate compound based on 3-substituted dioxazolone as well as a preparation method and application of the synthetic carbamate compound, and belongs to the technical field of organic synthesis. The synthesis method comprises the following steps: (1) preparing 3-substituted dioxazolone from hydroximic acid with different substituent groups and phosgene under an ice bath condition; and (2) reacting the 3-substituted dioxazolone obtained in the step (1) with different phenols (alcohols) under an alkaline condition to obtain corresponding carbamate compounds. According to the method, the yield of carbamate is further improved by adjusting the conditions of alkali, equivalent weight, temperature and the like; the preparation method provided by the invention is novel and has the advantages of mild reaction conditions, few generated impurities, high yield, high safety, convenience in operation and the like; and the compound shows good cholinesterase activity in activity screening, and can be used in insecticides or pesticides.
Owner:ANHUI GUANGXIN AGROCHEM +1

Resist composition and method for producing resist pattern

A resist composition includes (A1) a resin including a structural unit represented by formula (I) and a structural unit represented by formula (II), and no acid-labile group, (A2) a resin having an acid-labile group, and an acid generator:wherein R1 and R2 each represent a hydrogen atom, a halogen atom, or an alkyl group which may have a halogen atom, X1 and X2 each represent a single bond or *—CO—O—, L1 represents a single bond or a hydrocarbon group which may have a substituent, and —CH2— included in the group may be replaced by —O—, —S—, —SO2— or —CO—, ring W represents a hydrocarbon ring which may have a substituent, mi and mk represent an integer of 1 to 4, and L2 represents a single bond or a hydrocarbon group which may have a substituent, and —CH2— included in the group may be replaced by —O—, —S—, —SO2— or —CO—.
Owner:SUMITOMO CHEM CO LTD

Compound, organic semiconducting material, organic electronic device and display device

Combination of the following formula (I) where - R 1 to R 2 independent C1- to C8-hydrocarbyl, which contains at least one sp 3 -hybridized carbon atom comprising the C1- to Cs-hydrocarbyl via a sp 3 -hybridized carbon atom of C1 to C8 -hydrocarbylsan the P atom of formula (I) is bonded; - L 1 , A and L 2 are independently selected from the group consisting of a direct bond, substituted or unsubstituted phenylene, substituted or unsubstituted naphthylene, wherein at least one of L 1 , A and L 2 substituted or unsubstituted phenylene is and / or at least one of L 1 , A and L 2 substituted or unsubstituted naphthylene is; - whereupon, if one or more of L 1 , A and L 2substituted is / are, the one or more substituent(s) is / are independently selected from the group consisting of D, C1- to C6-alkyl and substituted or unsubstituted C6- to C 12 -Aryl, where, if the respective C6 - to C 12 -Aryl is substituted, the one or more substituent(s) is / are independently selected from the group consisting of D and C1 to C6 alkyl; - R 3 to R 9 are independently selected from the group consisting of H, D, C1- to C6-alkyl and substituted or unsubstituted C6- to C 12 -Aryl, where, if the respective C6 - to C 12 -Aryl is substituted, the one or more substituent(s) is / are independently selected from the group consisting of D and C1 to C6 alkyl.
Owner:NOVALED GMBH

A magnetically supported thioether chelated nitrogen heterocyclic carbene palladium complex, its preparation method and application

ActiveCN118179602BPalladium catalystDibromopropane
This invention discloses a magnetically supported thioether-chelated nitrogen heterocyclic carbene palladium complex MNPs-NHC-Pd, its preparation method, and its applications. Using an amino alcohol as a starting material, an imidazole derivative containing a hydroxyl group on the N-substituent is obtained through a condensation and ring-closing reaction. This derivative is then subjected to substitution reactions with thionyl chloride and cyclohexanethiol sequentially to obtain an imidazole derivative containing a thioether on the N-substituent. This derivative is then reacted with 1,3-dibromopropane to obtain an N-bromopropyl-N'-cyclohexane thioether-substituted imidazole bromium salt. This salt is then reacted with Pd(OAc)₂ or PdCl₂ via a direct metallization reaction to obtain the N-bromopropyl-substituted thioether-chelated nitrogen heterocyclic carbene palladium complex NHC-Pd. The NHC-Pd complex is then reacted with amino-functionalized magnetic nanoparticles (MNPs-NH₂) to prepare the magnetically supported thioether-chelated nitrogen heterocyclic carbene palladium complex MNPs-NHC-Pd. It not only possesses the activity of homogeneous nitrogen heterocyclic carbene palladium catalysts, but also has a simple synthesis method, high yield, and is easy to separate and reuse in catalytic C-C bonding reactions, showing good application prospects in the field of catalysis.
Owner:HENAN UNIVERSITY OF TECHNOLOGY

Low odor extreme pressure agent, gear oil additive composition, gear oil composition, and method for producing the same

This invention relates to low-odor extreme pressure agents, gear oil additive compositions, gear oil compositions, and methods for their preparation. The extreme pressure agents comprise components having the structure shown in Formula I, where n is a positive integer from 1 to 5; R1 and R2 may be the same or different; R1 and R2 are independently selected from C... 1~12 Alkyl, substituted or unsubstituted C 3~10 cycloalkyl, substituted or unsubstituted C 6~14 aryl or the structure shown in Formula II; in Formula II, R3 is selected from C 1‑4 Alkylene; the substituted C 3~10 Substituents of cycloalkyl groups, substituted C 6~14 The substituents of the aryl group are each independently selected from hydrogen, halogen, and C. 1~5 One or more alkyl groups. The extreme pressure agent and gear oil additive composition of the present invention has a low odor, mainly solving the problem of unbearable odor caused by the addition of sulfurized isobutylene in existing products.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1

Aromatic polysulfone

An aromatic polysulfone having repeating units comprising the structure represented by the following general formula (S-1) and terminal structures represented by the following general formula (Se-1). -ph 1 -SO2-ph 2 -O- (S-1) [In formula (S-1), ph 1 and ph 2 Each can be independently a phenylene group that may have substituents. [(Ra)] x -Ar-O- (Se-1) [In formula (Se-1), Ar is an aromatic hydrocarbon group that may have substituents; Ra is a salt of sulfonic acid group or sulfonic acid group; x is an integer greater than 2, and multiple Ra can be the same or different.]
Owner:SUMITOMO CHEM CO LTD

Novel compound

The present application relates to a compound represented by chemical formula 1. [Chemical formula 1] (In chemical formula 1, R is a substitutable linear or branched C1-C20 alkyl group, a substitutable C3-C20 cycloalkyl group, or a substitutable C6-C20 aryl group, and the substitution is carried out with oxygen, nitrogen, sulfur, hydroxy, a linear or branched C1-C6 alkyl group, a C3-C20 cycloalkyl group, an C6-C20 aryl group, a halogen, or a combination thereof.)
Owner:AJOU UNIV IND ACADEMIC COOP FOUND