82 results about "Acetylene compounds" patented technology

Crystallized diacetylenic compounds having certain crystallographic and other characteristics; diacetylenic compounds and mixtures crystallized from diacetylenic solutions; methods of preparing and identifying solvent systems for dissolving diacetylenic compounds; diacetylenic solutions; methods of recrystallizing diacetylenic compounds; crystals of 2,4-hexadiyn-1,6-bis(alkylurea) compounds; and ambient condition indicators and time-temperature condition indicators comprising crystallized diacetylenic compounds.

This invention relates to a mixture of imageable polyacetylenic compounds which have similar photosensitivities and which are visually imageable in complementary colors combinable to provide a black image, which mixture contains at least one polyacetylenic metal salt which produces a color, preferably a metal salt of a diacetylene C.sub.6 to C.sub.48 mono- or dicarboxylic acid, which is complementary to a color produced by another polyacetylenic metal salt or non-metallic polyacetylenic compound contained in the mixture or in an another integral color forming layer. The invention also pertains to the use of said mixture and the manner of its preparation.

The present invention relates to a reactive triphenyl diethyne compound, which can take part in the copolymerization reaction with cholesterol-type liquid crystal to prepare cholesterol-type reflecting polaring plate.

Compounds having the formulas below. R is an aromatic-containing group. Each M is an alkali metal. Each m is a positive integer. The value of n is a positive integer. The value p is 0 or 1. If p is 0 then n is 1. A thermoset made by curing a composition containing the below phthalonitrile monomers.

A method of reacting a diphenyl acetylene compound with an excess of an aromatic diol in the presence of an alkali metal carbonate to form the above oligomer. A method of reacting a phenoxyphthalonitrile with an acetylene compound to form the phthalonitrile monomer below.

The invention discloses a synthetic method of a coumarin-pyrrole compound. The synthetic method comprises the following step of: in a reactive solvent, with 4-amino coumarin compounds and disubstituted acetylene compounds as raw materials, under the catalysis of palladium (II) and action of an oxidant, carrying out a reaction to obtain the coumarin-pyrrole compound. The synthetic method is mild in reaction conditions, simple and convenient in route and high in atom economy and has a favorable industrial application prospect; and raw materials are low in cost and easy to obtain.

The invention discloses a structure and a preparation method for heterocyclic aryl acetylene compounds containing benzoxazole and benzothiazole groups. The preparation method comprises the following steps: reacting heterocyclic aryl acetylene compounds containing benzoxazole and benzothiazole groups with bromine in an organic solvent to obtain brominized products; and reacting with alkali in the organic solvent, and removing hydrogen bromide to obtain the heterocyclic aryl acetylene compounds.

The present invention provides a resin composition for laser engraving containing at least an acetylene compound and a binder polymer, a relief printing plate precursor for laser engraving using the same, a relief printing plate, and a method for producing a relief printing plate.

A method of forming a coloured substrate, comprising applying to or incorporating within the substrate a diacetylene compound, and exposing the substrate to (i) a first, activating stimulus that converts the diacetylene compound from an unreactive to a reactive form, and (ii) a second stimulus that causes the reactive form of the diacetylene compound to polymerize and form the coloured substrate, wherein the diacetylene compound reverts to its unreactive form on removal of the activating stimulus and is of formula I: Y—C≡C—C≡C—(CH2)n-T-Q-Z (I) wherein: n=an odd integer; T=CO, CS or a bond; Q=NH, S, O, OCONH, NHCONH, NH—CHE-CONH, NHCOO or NHCSNH wherein E is H or a C_1-20 alkyl group; Z=H or a hydrocarbon group containing 1 to 20 carbon atoms; Y=H or any group comprising at least one carbon atom.

An object of the present invention is to provide a method for producing a binder for inks and for use in producing an inkjet printing ink that has both good ink dischargeability and blend stability. A method for producing a binder for inkjet printing inks, the binder containing a hydrophilic-group-containing urethane resin (A), an acetylene compound (B), and an aqueous medium (C), includes step (1) of allowing Ga polyol (a1) containing a hydrophilic-group-containing polyol to react with a polyisocyanate (a2) in an organic solvent or in the absence of a solvent and feeding the organic solvent as needed to prepare an organic solvent solution [I], step (2) of mixing the organic solvent solution [I] with the acetylene compound (B) and the aqueous medium (C) to prepare a mixture [II], and step (3) of removing the organic solvent contained in the mixture [II].

This invention pertains to a process for preparing diacetylenics, to diacetylenic compounds and to reduced diacetylenic compounds. The process includes the steps of reacting coupling an acetylenic acid in presence of cupric chloride in Ethylamine and hydroxylamine hydrochloride to form a diacetylenic diacid; reacting the diacetylenic diacid with a lithium compound, trimethylsilyl chloride and hydrochloric acid to form a diacetylenic compound; and reducing the diacetylenic compound to a reduced diacetylenic compound. The diacetylenic compounds have the formula COOH-(CH2)m-C=C-C=C-(CH2)m-C(=O)-R or R-C(=O)-(CH2)m-C=C-C=C-(CH2)m-C(=O)-R and the reduced cyclic diacetylenic compounds have the formula COOH-(CH2)m-C=C-C=C-(CH2)m-CH2-R or R-CH2-(CH2)m-C=C-C=C-(CH2)m-CH2-R, where m is 1-18 and R is selected from alkyl groups of 1-10 and cyclic groups containing 6-35 carbon atoms and aryl moieties

The invention discloses a phenyl-substituted bodipy and diphenylamine fluorene based two-photon fluorescent dye. A structural general formula of the fluorescent dye is represented by a formula shown in the description, wherein R is C1-C18 alkyl. Steps for synthesizing the fluorescent dye are as follows: producing 5-phenyl-substituted and 2,6-iodinated bodipy from 2,4-dimethyl pyrrole and benzaldehyde, which serve as raw materials; subjecting fluorene, which serves as a raw material, to bromination, alkylation, Pd(0) catalyzed amination, a Pd(0) and CuI catalyzed Sonogashira cross-coupling reaction and trimethylsilyl removal, so as to produce a diphenylamine-fluorene-acetylene compound; and subjecting the 2,6-iodinated bodipy and the diphenylamine-fluorene-acetylene compound to a reaction, thereby obtaining the target product. The target compound has relatively high two-photon fluorescence performance, the maximum two-photon absorption cross section in toluene reaches 265GM, and the fluorescent quantum yield is 0.35, so that a new design way of think is provided for the synthesis and application of bodipy-based two-photon fluorescent dyes.

A process for removal of acetylenic compounds from hydrocarbon streams in which a hydrocarbon feed having a target fraction which contains a first concentration of acetylenic compounds and olefins is contacted with a catalyst selective for the hydrogenation of acetylenic compounds in the presence of hydrogen and a solvent having a boiling point higher than the boiling point of the target fraction in a distillation reaction zone under conditions of temperature, pressure and hydrogen concentration favoring the hydrogenation of acetylenic compounds in which the target fraction is recovered as overheads having a second concentration of acetylenic compounds lower than said first concentration and the solvent is recovered as bottoms.

The invention belongs to the field of organic synthesis, and particularly relates to a preparation method of 1,4-disubstituted-1,3-butadiyne. The preparation method comprises the following steps: adding a substituted acetylene compound as shown in Formula I, cuprous iodide and a solvent 1,4-dioxane into a dried reactor, and performing a reaction with stirring in air at a certain temperature; and after the reaction is completed, filtering the reaction solution through a silica gel-containing glass dropper, performing rinsing with ethyl acetate, performing centrifugal drying on the filtrate, and performing separation through column chromatography to obtain the 1,4-disubstituted-1,3-butadiyne compound as shown in Formula II, wherein the reaction formula is shown in the specification.

The invention discloses two-photon fluorescent dye based on phenyl-substituted boron-dipyrromethene and diphenyl indenofluorene; the two-photon fluorescent dye has a structural general formula shown in the description, wherein R is C1-C18 alkyl; the synthetic steps include: using 2,4-dimethylpyrrole and benzaldehyde as raw materials to generate 5-phenyl-substituted and 2,6-iodide boron-dipyrromethene; reducing indenofluorene dione, alkylating, brominating, carrying out Pd(0) catalytic amination, carrying out Pd(0) and CuI catalyzed Sonogashira cross-coupling reaction, and removing trimethylsilyl to generate diphenylamine-indenofluorene-ethynyl compound; enabling the 2,6-iodide boron-dipyrromethene to react with the diphenylamine-indenofluorene-ethynyl compound to obtain the two-photon fluorescent dye; the two-photon fluorescent dye has high two-photon fluorescence, maximum two-photon absorption section in toluene reaches 776 GM, fluorescent quantum yield reaches 0.46, and a new idea to synthesize and apply two-photon fluorescent dyes based on boron-dipyrromethene is provided.

A low-workfunction photocathode includes a photoemissive material employed as a coating on the photocathode. The photoemissive material includes A_nMC₂, where A is a first metal element, the first element is an alkali metal, an alkali-earth element or the element Al; n is an integer that is 0, 1, 2, 3 or 4; M is a second metal element, the second metal element is a transition metal or a metal stand-in; and C₂ is the acetylide ion C₂²⁻. The photoemissive material includes a crystalline structure or non-crystalline structure of rod-like or curvy 1-dimensional polymeric substructures with MC₂ repeating units embedded in a matrix of A.

A composition for use in prevention, inhibition and/or treatment of coccidiosis in an animal is disclosed. The composition comprises an effective amount of Bidens pilosa, an active constituent thereof, or an active compound isolated therefrom. In another aspect, a composition for use in preventing and/or treating coccidiosis, and/or enhancing growth in an animal is disclosed, the composition comprising an animal feed and an effective amount of Bidens pilosa, or an isolated active constituent comprising a polyacetylenic compound.

The invention discloses a synthetic method of 1, 1-2 fluorine - 1, 3 - acetylene compounds. The synthetic method enable tosylhydrazones and acetylene compounds of Alpha, alpha, alpha, 3 methyl ketone to react in organic solvent. 1, 1-2 fluorine - 1, 3 - acetylene compounds is obtained through the catalysis of cuprous CuX and the existing of soda and annexing agent. The synthetic method of 1, 1-2 fluorine - 1, 3 - acetylene compounds preferentially uses copper iodide which is cheap and stable as catalyst, and the operation is relatively convenient and easy. Also the copper iodide has good tolerance and universality to functional groups. The invention has the advantages that the raw materials are easy to obtain, the reaction cost is relative low, and the reaction time is relative short. The invention is suitable for the preparation of 1, 1-2 fluorine - 1, 3 - acetylene compounds.

The invention discloses a green and efficient benzothiophene compound electrochemical synthesis method which comprises the following steps: adding o-methylthio phenylboronic acid, a phenylacetylene compound and an electrolyte into a reaction solvent, inserting an electrode, and stirring and reacting under constant current to obtain a benzothiophene compound, wherein R is selected from H, C1-C3 alkyl or halogen. According to the method, the benzothiophene is obtained through free radical addition cyclization by utilizing green electrochemical oxidation without participation of a transition metal catalyst and an exogenous strong oxidant, the operation is simple, the cost is low, the reaction is green and efficient, and good guidance is provided for development and application of a benzothiophene-containing drug structure.