17 results about "Propargyl ether" patented technology

The invention relates to a method for preparing a flame-retardant and light-resistant core-shell water-based acrylic resin coating. The method comprises the following steps: adding water, an emulsifier and methacrylic acid into a reaction container, stirring and reacting for 60 minutes, then adding a monomer A and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) and an organic molybdenum compound, and emulsifying for 60 to 90 minutes; dropping an initiator, reacting for 1 to 2 hours, and reacting at 70 to 90 DEG C for 1 to 2 hours to obtain a core layer emulsion; simultaneously dropping all monomers B and the initiator into the obtained core layer emulsion, keeping the temperature and stirring for 1.5 hours, adding hydroxypropyl propargyl ether and a coumarin derivative, reacting at 60 to 70 DEG C for 1 hour, adding an emulsifier, reacting for 30 minutes, and adding ammonia water to adjust the pH value to 7 to 8 to obtain the flame-retardant and light-resistant core-shell water-based acrylic resin coating. The obtained acrylic resin is resistant to dripping and has good light resistance.

The present invention relates to bio-based bisphenol monomer of formula I and process of preparation thereof. Specifically, the present invention relates to bio-based bisphenol monomers of formula I containing multiple alkoxyl groups, and polyphenols. The bisphenol monomers of formula I contain built-in methoxyl groups, which represent latent phenolic hydroxyl groups and could conveniently be de-blocked to phenolic hydroxyl groups leading to formation of polyphenols containing catechol / phloroglucinol units with anti-oxidant properties and are potentially useful in various applications like cosmetics, polymer additives and so on. Further, the present invention relates to process of preparation of polymers using bisphenol monomer of formula I as valuable building blocks wherein the high performance thermoplastics are poly(ether sulfone)s, poly(ether ether ketone)s, polyesters, polycarbonates, polyphosphonates, etc. and thermosetting resins are epoxies, cyanate esters, phthalonitriles, propargyl ethers, etc.

The invention relates to a long-acting organic silicon water-based antirust agent which is prepared by the following steps: polymerizing dimethyl dimethoxy silane, ethylene glycol, triethanolamine, trimethyl ethyoxyl silane, hydroxypropyl propargyl ether and aminopropyl methyl diethyoxyl silane to prepare an antirust functional component, and matching with a proper amount of emulsifier and water to prepare the water-based organic silicon antirust agent. The prepared antirust agent product is high in adhesive force after being attached to the metal surface, and due to the hydrophobic and anti-corrosion capacity of the organic silicon chain segment, a metal surface antirust film subjected to soaking treatment in a thin coating mode is high in density and long in antirust time, the antirust effect is good in a harsh damp and hot environment, and the antirust agent product can be applied to the metal surface. And the rust-proof film can be quickly removed by adopting hot water, the cost is low, the use is convenient, and the application market is wide.

The application discloses a method for preparing alpha, beta-unsaturated aldehyde based on nickel and visible light synergistic catalysis propargyl ether rearrangement reaction, which comprises the following steps: in the presence of a nickel catalyst, a ligand, a photocatalyst and a base and under the condition of blue light irradiation, propargyl ether of formula (1) is reacted with bromide of formula (2) in an organic solvent to generate alpha, beta-unsaturated aldehyde compound of formula (3). The preparation method has the advantages of cheap and easily available reaction raw materials, simple reaction operation, wide application range of reaction substrates, easy reaction amplification, mild reaction conditions and the like, and can realize industrial production and application.

The invention discloses a preparation method of an indene derivative containing hexafluoroisopropyl ester, which comprises the following steps: reacting a propargyl ether compound, hexafluoroisopropanol and N-iodosuccinimide at room temperature for 0.5 hour, then adding palladium acetate, bis (2-diphenylphosphinophenyl) ether, formic acid, acetic anhydride, sodium carbonate and dimethyl sulfoxide, reacting at 120 DEG C for 24 hours, filtering, washing and drying to obtain the hexafluoroisopropyl ester-containing indene derivative. And after the reaction is completed, carrying out post-treatment to obtain the indene derivative containing hexafluoroisopropyl ester. According to the preparation method, hexafluoroisopropanol is taken as a reactant, formic acid is taken as a carbonyl source, the reaction condition is mild, the operation is simple, the tolerance range of substrate functional groups is wide, and the reaction efficiency is high. Various indene derivatives containing hexafluoroisopropyl ester can be synthesized according to actual needs, so that the method is convenient to operate, and the practicability of the method is widened.

The invention discloses a preparation method of a benzofuran derivative containing a thioester structure, which comprises the following steps: reacting tris (dibenzylideneacetone) dipalladium, 4, 5-bis (diphenylphosphine-9, 9-dimethyl xanthene, sodium phosphate, aryl iodide propargyl ether and aryl phenol formate at 60 DEG C for 24 hours, and after the reaction is completed, removing the solvent, thereby obtaining the benzofuran derivative containing the thioester structure. And performing post-treatment to obtain the benzofuran derivative containing the thioester structure. The preparation method has the advantages of simple operation, cheap and easily available reaction starting raw materials, wide tolerance range of substrate functional groups, and high reaction efficiency. The aryl phenol formate is used as both a carbonyl source and a sulfur source, various benzofuran derivatives containing thioester structures can be synthesized according to actual needs, and the practicability of the method is widened while the operation is convenient.

The invention discloses a method for preparing alpha, beta-unsaturated aldehyde based on nickel and visible light synergistic catalysis of propargyl ether rearrangement reaction, which comprises the following step: in the presence of a nickel catalyst, a ligand, a photocatalyst and alkali and under the condition of blue light irradiation, reacting propargyl ether of a formula (1) with a bromide of a formula (2) in an organic solvent to generate an alpha, beta-unsaturated aldehyde compound of a formula (3). The preparation method provided by the invention has the advantages of cheap and easily available reaction raw materials, simple reaction operation, wide application range of reaction substrates, easy amplification of reaction, mild reaction conditions and the like, and can realize industrial production and application. # imgabs0 #

The invention discloses a method for preparing indene by copper-catalyzed propargyl ether rearrangement reaction, which is characterized by comprising the following step: in the presence of a copper catalyst, a ligand and di-tert-butyl peroxide, in an organic solvent, heating a compound in a formula (1) and a compound in a formula (2) to react to generate an indene compound in a formula (3) or a formula (4). The invention discloses a method for preparing benzofuran by copper-catalyzed propargyl ether rearrangement reaction, which is characterized by comprising the following steps: in the presence of a copper catalyst and alkali, in an organic solvent, heating a compound in a formula (5) to react to generate a benzofuran compound in a formula (6). The preparation method provided by the invention has the advantages of cheap and easily available reaction raw materials, simple reaction operation, wide application range of reaction substrates, easy amplification of reaction, mild reaction conditions and the like, and can realize industrial production and application.

The present invention discloses a method for synthesizing (5S,6R)-5,6-epoxy-2-heptadecyn-1-ol. The synthesis method is as follows: After reacting (Z)-1-bromotetradecene with a substituted phenyl propargyl ether, an epoxidation reaction occurs under the action of an epoxidation catalyst, and then the substituted phenyl group is removed under the action of an oxidizing agent to obtain (5S,6R)-5,6-epoxy-2-heptadecyn-1-ol. The synthesis conditions of the present invention are mild, the operation is simple, the yield is high, the preparation cost is low, and it has good economic benefits.

The invention discloses a synthesis method of (5S, 6R)-5, 6-epoxy-2-heptadecene-1-alcohol, which is characterized in that (2S, 3R)-p-toluenesulfonic acid-1, 2-epoxy-3-tetradecanol ester and substituted phenyl propargyl ether are used as raw materials to carry out nucleophilic addition ring-opening reaction, so that the yield is high; alcohol and an alkali system react at room temperature to carry out Williamson ether synthesis ring closing reaction, the operation is simple and convenient, the yield is good, and the chemical properties of all intermediates are stable; the substituted phenyl is mildly removed in the mixed solvent by using the oxidizing agent, the reaction is mild and controllable, and the yield is high. The method is low in production cost, has good economic benefits and can be popularized and applied.

The application discloses a preparation method of a benzopyran derivative containing hexafluoroisopropyl ester, which comprises the following steps: reacting propargyl ether compound, hexafluoroisopropanol and N-iodosuccinimide at room temperature for 15 min, then adding palladium acetate, tris(2-furyl)phosphine, formic acid, acetic anhydride and potassium phosphate to react at 60 DEG C for 24 hours, and after the reaction is completed, post-treatment is carried out to obtain the benzopyran derivative containing hexafluoroisopropyl ester. The preparation method uses hexafluoroisopropanol as a reactant and a promoter, uses formic acid as a carbonyl source, has mild reaction conditions, simple operation, a wide functional group tolerance range of a substrate and high reaction efficiency. According to actual needs, a plurality of benzopyran derivatives containing hexafluoroisopropyl ester can be synthesized, and the method is convenient to operate and wide in practicability.

The invention relates to a preparation method of a flame-retardant and light-resistant core-shell type water-based acrylate resin coating, which comprises the following steps: adding water, an emulsifier and methacrylic acid into a reaction container, uniformly mixing and stirring, heating to 40-45 DEG C, stirring and reacting for 60 minutes, adding a monomer A, 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) and an organic molybdenum compound, and emulsifying for 60-90 minutes; heating to 80-90 DEG C, dropwise adding an initiator, reacting for 1-2 hours, and reacting for 1-2 hours at 70-90 DEG C to obtain a core-layer emulsion; and simultaneously dropwise adding all monomers B and an initiator into all the obtained core-layer emulsion for 1 hour, keeping the temperature and stirring to react for 1.5 hours, adding hydroxypropyl propargyl ether and a coumarin derivative, reacting at 60-70 DEG C for 1 hour, cooling to 50 DEG C, adding an emulsifier, reacting for 30 minutes, and adding ammonia water to adjust the pH value to 7-8, thereby obtaining the flame-retardant and light-resistant core-shell type water-based acrylate resin coating. The obtained acrylate resin is good in molten drop resistance and light resistance.

The application discloses a preparation method of a benzopyran derivative containing a thioester structure, and comprises the following steps: adding a propargyl ether compound, hexafluoroisopropanol and N-iodosuccinimide into a solvent to react at 50-70 DEG C for 0.5-5 h, then adding a sulfonyl chloride compound, a palladium catalyst, a ligand, a carbonyl molybdenum and a base to react at 80-100 DEG C for 20-28 hours, and after the reaction is completed, post-treatment is carried out to obtain the benzopyran derivative containing the thioester structure; the preparation method uses the sulfonyl chloride compound as a reactant and a sulfur source, uses the carbonyl molybdenum as a carbonyl source, has mild reaction conditions, simple operation, a wide functional group tolerance range of a substrate and high reaction efficiency. According to actual needs, various benzopyran derivatives containing the thioester structure can be synthesized, and the method is convenient to operate and wide in practicability.

The invention discloses an osmotic cleaning reagent and application thereof. The osmotic cleaning reagent comprises the following active ingredients in parts by weight: 0.05-0.6 part of an alkynediol surfactant; 1.5 to 5 parts of iso-tridecanol polyoxyethylene ether; 5-20 parts of a complexing agent; 7-18 parts of a pH regulator; the alkyne diol surfactant comprises at least one of tetramethyl decyne diol, a butyne diol ethyoxyl compound, 2, 5, 8, 11-tetramethyl-5-decyne-4, 7-diol, an ethoxylate, hydroxypropyl propargyl ether and a butyne diol ethoxylate, and the alkyne diol surfactant comprises at least one of tetramethyl decyne diol, a butyne diol ethyoxyl compound, 2, 5, 8, 11-tetramethyl-5-decyne-4, 7-diol, ethoxylate, hydroxypropyl propargyl ether and butyne diol ethoxylate. The permeation cleaning reagent is used for cleaning the etched glass; the method comprises the following steps: soaking etched glass in a permeation cleaning reagent, cleaning under the condition of ultrasonic waves or spray scrubbing, and then spraying with pure water, the cleaning reagent is low in surface tension, can quickly wet the surface of an etched glass substrate, and greatly improves the cleaning yield.

The application discloses a preparation method of a benzopyran derivative containing an amide structure, which comprises the following steps: reacting propargyl ether compound, hexafluoroisopropanol and N-iodosuccinimide at 60 DEG C for 1 h, then adding a nitro compound, palladium acetate, 2-diphenylphosphine-biphenyl, carbonyl molybdenum, potassium carbonate and water to react at 100 DEG C for 24 h, and after the reaction is completed, post-treatment is carried out to obtain the benzopyran derivative containing the amide structure. The preparation method uses the nitro compound as a reactant and a nitrogen source, and uses the carbonyl molybdenum as a carbonyl source, has mild reaction conditions, simple operation, a wide functional group tolerance range of a substrate and high reaction efficiency. According to actual needs, various benzopyran derivatives containing the amide structure can be synthesized, and the method is convenient to operate and wide in practicability.

The invention discloses a synthesis method of (5S, 6R)-5, 6-epoxy-2-heptadecene-1-alcohol, which comprises the following steps: reacting (Z)-1-bromotetradecene with substituted phenyl propargyl ether, performing epoxidation reaction under the action of an epoxidation catalyst, and removing substituted phenyl under the action of an oxidant to obtain (5S, 6R)-5, 6-epoxy-2-heptadecene-1-alcohol. And adding 2, 6-epoxy-2-heptadecene alkyne-1-alcohol into the reaction kettle. The method is mild in synthesis condition, simple and convenient to operate, high in yield, low in preparation cost and good in economic benefit.

The invention discloses a preparation method of a benzopyran derivative containing an amide structure, which comprises the following steps: reacting a propargyl ether compound, hexafluoroisopropanol and N-iodo-succinimide at 60 DEG C for 1 hour, then adding a nitro compound, palladium acetate, 2-diphenylphosphine-biphenyl, carbonyl molybdenum, potassium carbonate and water, reacting at 100 DEG C for 24 hours, and after the reaction is completed, filtering, washing and drying to obtain the benzopyran derivative containing the amide structure. And performing post-treatment to obtain the benzopyran derivative containing the amide structure. The preparation method takes a nitro compound as a reactant and a nitrogen source and carbonyl molybdenum as a carbonyl source, and has the advantages of mild reaction conditions, simple operation, wide tolerance range of substrate functional groups and high reaction efficiency. Various benzopyran derivatives containing amide structures can be synthesized according to actual needs, and the practicability of the method is widened while the operation is convenient.