53 results about "Pyridinium Compounds" patented technology

The present invention is directed to the amphiphilic pyridinium compounds, such as for suppressing IL-8 secretion and production. The present invention further provides methods of making and using such compounds for the treatment of the IL-8 related diseases, such as cystic fibrosis.

An electrophoretic display device includes an electrophoretic dispersion liquid in which electrophotographic particles are dispersed. Each of the electrophotographic particles has a surface salt structure consisting of an acid-derived anionic group and any one of cationic compounds including a specific imidazolium compound, a specific pyridinium compound, a specific quaternary ammonium compound, and a specific trialkylamine-derived compound.

The invention relates to an aqueous, alkaline cyanide-free electrolyte bath for de-positing zinc and zinc alloy coatings on substrate surfaces comprising (a) a source for zinc ions and optionally a source for further metal ions, (b) hydroxide ions, (c) a polymer of general formula I which is soluble in the bath and (d) at least one pyridinium compound of general formula II or III. The electrolyte bath is suitable for the galvanic deposition of bright and even zinc and zinc alloy coatings.

The invention discloses a bifunctional basic ionic liquid and a novel water-phase catalytic synthesis method of a substituted pyridinium compound by using the same. In the method, a used catalyst is the bifunctional ionic liquid simultaneously containing a Lewis base and a Bronsted base; aromatic aldehyde, malononitrile and a sulfhydryl compound are used as raw materials; water is used as a reaction medium; and a multi-substituted pyridinium compound is obtained through catalytic synthesis. Compared with the prior art, the invention has the following advantages: (1) the raw materials are wide in sources, the preparation process is convenient, and the double-base catalyst has high activity, is hydrostable and can not be deactivated; (2) the reaction can be performed at room temperature, thereby ensuring that the conditions are mild; (3) the water solution containing the catalyst can be recycled and is environment-friendly; and (4) water is used instead of an organic solvent, thereby achieving environment and economic double benefits. Thus, the synthesis method of a multi-substituted pyridinium compound is efficient and environment-friendly, and is beneficial to large-scale industrial production.

In a dye-sensitized photovoltaic device including a semiconductor fine particle layer 2 on which a sensitizing dye is adsorbed, a counter electrode 3, and an electrolyte layer 4 between the electrodes, a molecule having a plurality of acid functional groups for adsorption onto the semiconductor electrode is used as a molecule of the sensitizing dye, and part of the acid functional groups is neutralized with an alkaline compound which is a hydroxide of at least one metal or compound selected from the group consisting of Li, Na, K, tetramethylammonium, tetraethylammonium, tetrapropylammonium, tetrabutylammonium, an imidazolium compound, and a pyridinium compound. In this manner, a dye-sensitized photovoltaic device that can achieve high photoelectric conversion efficiency even in the cases where a dye containing readily aggregating acid functional groups, such as carboxylic acid, as the adsorbing groups is used. A method for making the device is also provided.

The present invention addresses the problem of providing a palladium plating solution in which occurrence of defective parts such as pin holes on a palladium coating is reduced, and in which heat resistance performance equivalent to that obtained conventionally can be obtained even when a gold plating coating formed on the palladium coating is made thinner. The problem was overcome by: a palladium plating solution containing a soluble palladium salt as a palladium source, and a specific pyridinium compound in which an alkyl group is bonded to a nitrogen atom at the 1-position and one to five of the 2- to 6-positions are substituted with one or more specific substituents selected from the group consisting of an alkyl group, an aryl group, a carboxy group, an alkoxycarbonyl group, a sulfo group, an alkoxy sulfonyl group, an amino group, an alkylamino group, a dialkylamino group, and a cyano group; and a palladium coating obtained by performing palladium plating on a nickel, nickel alloy, copper, or copper alloy coating using the palladium plating solution.

For the reproducible manufacturing of particularly uniform and brilliant i.e., highly bright copper coatings that are leveled and ductile as well, a copper plating bath is utilized that contains as an additive a mixture of oligomeric phenazinium compounds. The mixture contains at least one phenazinium compound selected from the group comprising compounds containing two monomeric units and compounds containing three monomeric units having the general chemical formulae <I> and <II> set forth in the patent claims and in the specification as well as further oligomeric phenazinium compounds.

The present invention addresses the problem of providing an electrolytic nickel (alloy) plating solution which is able to fill micro holes or micro recesses 14 within an electronic circuit component with nickel or nickel alloy 18 without the generation of defects such as voids and seams and firmly join two or more electronic components together by filling micro gaps. The present invention also addresses the problem of providing a nickel or nickel alloy plating / filling method with which an electrolytic nickel (alloy) plating solution is used, a method for producing a minute three-dimensional structure, an electronic component assembly, and a production method therefor. The problems have been solved by filling the micro holes or micro recesses 14 with an electrolytic nickel (alloy) plating solution which contains a specific N-substituted pyridinium compound.

The present invention relates to novel pyridinium compounds, their isomers, steroisomers, atropisomers, conformers, tautomers, polymorphs, hydrates and solvates. The present invention also encompasses process for preparing novel compounds and pharmaceutical composition of said compounds. The invention further relates to the use of the above mentioned compounds for the preparation of medicament for use as pharmaceuticals.

A method for producing a reaction product comprising an ester-functional silane, the method comprising: i) reacting a composition comprising: a) a haloorganosilane, b) a metal salt of a carboxy-functional compound, c) a phase transfer catalyst comprising a bicyclic amidine, an iminium compound, or a mixture thereof, provided that the iminium compound is not an acyclic guanidinium compound or pyridinium compound, and d) a co-catalyst, provided that the co-catalyst is optional when the phase transfer catalyst comprises the iminium compound.

The present invention provides an aqueous redox flow battery comprising a negative electrode immersed in an aqueous liquid negative electrolyte, a positive electrode immersed in an aqueous liquid positive electrolyte, and a cation-permeable separator (e.g., a porous membrane, film, sheet, or panel) between the negative electrolyte from the positive electrolyte. During charging and discharging, the electrolytes are circulated over their respective electrodes. The electrolytes each comprise an electrolyte salt (e.g., a lithium or sodium salt), a redox reactant. The negative redox reactant comprises a pyridinium compound of Formula (I) as described in the specification

The present invention concerns pyridinium compounds, a synthesis method for their preparation, metal or metal alloy plating baths containing said pyridinium compounds and a method for use of said metal or metal alloy plating baths.The plating baths are particularly suitable for use in filling of recessed structures in the electronics and semiconductor industry including dual damascene applications.

The invention relates to a method for the treatment or prevention of diseases or conditions associated with vascular endothelium dysfunction or liver injury comprising the administration to a patient in a need of such treatment or prevention of a therapeutically or prophylactically effective amount of a compound selected from the group consisting of:wherein R represents hydrogen atom, CH3, OH, pyridyl (C5H4N), 1-methylpyridyl (C5H4N—CH3) or pyridyl substituted with hydroxy group ((OH)C5H3N), and X represents a physiologically acceptable counterion.

The present invention relates to the technical field of medicine. Disclosed are a pyrimidineamine compound or pyridinamine compound as represented by formula I and applications of the compound in preparing an anti-tumor medicament. The compound can selectively inhibit CDK4 and CDK6 to cease cell growth of tumor cells in the G1 phase and to reduce cells in the S-phase, and can effectively reduce the phosphorylation of tumor suppressor protein Rb at loci Ser780, thus is applicable in various diseases caused by cell cycle control disorders involving CDK4 and CDK6, is specifically applicable in treating malignant tumors, and has the advantages of high selectivity, high activity, and strong resistance against tumor cell proliferation.

The present invention addresses the problem of providing: an electrolytic nickel (alloy) plating solution which is able to fill micro holes or micro recesses 14 within an electronic circuit componentwith nickel or nickel alloy 18 without the generation of defects such as voids and seams; a nickel or nickel alloy plating / filling method which uses this electrolytic nickel (alloy) plating solution;and a method for producing a three-dimensional microstructure. The above-described problem has been solved by filling the micro holes or micro recesses 14 with use of an electrolytic nickel (alloy) plating solution which contains a specific N-substituted carbonyl pyridinium compound.

The invention provides tetraphenyl ethylene borate pyridinium salt, a preparation method and application thereof, and a reagent and method for detecting fructose. The structural formula of the tetraphenyl ethylene borate pyridinium is shown as a formula (I) or a formula (II). According to the invention, a series of tetraphenyl ethylene borate pyridinium compounds are prepared by adopting specificraw materials and methods, can be used as fructose detection reagents, have high selectivity and high sensitivity detection capability on fructose, can detect fructose-containing samples including honey, seminal plasma and the like, and have wide application prospects.

The subject of the present invention is to provide a kind of electrolytic nickel (alloy) plating liquid, when filling the tiny holes or tiny recesses (14) in the electronic circuit parts by nickel or nickel alloy (18), can not produce pores Filling under defects such as cracks or cracks, and when bonding two or more electronic parts, the electronic parts can be firmly joined to each other by filling the small gaps. In addition, the subject is to provide a nickel or nickel alloy plating filling method using the electrolytic nickel (alloy) plating solution, a method of manufacturing a micro three-dimensional structure, an electronic component assembly, and a method of manufacturing the same. The above-mentioned problems can be solved by using an electrolytic nickel (alloy) plating solution containing a specific N-substituted pyridinium compound to fill microscopic pores or microscopic recesses (14).