146 results about "Aryne" patented technology

The invention relates to a kind of arylenealkyne resin containing siloxanes. The said resin makes diethynylene benzene (DEB) and silicon alkyl chloride as raw materials, firstly make use of the reaction of magnesium and alkyl bromide to produce Grignard reagentú¼then react with DEB to produce alkyne Grignard reagent; then react with silicon alkyl chloride, finally hydrolyze and condense in alkaline water liquor, or extend chain with siloxanes chloride, to form a kind of arylenealkyne resin containing siloxanes of new-style structure. The resin designed and synthesized by the invention has good processing property, and can be solidified into crosslinked resin of good thermostability under heat, light or radiative condition. Besides it has good machine capability, electric insulation capability and ceramic performance. So it can be used as the base material of high performance compound material resin, insulation material, the ceramic precursors and so on, and also has wide application prospect in such high technology fields as spaceflight, aviation, navigation and so on.

The invention relates to a polysilane-containing aryne resin represented as right, wherein n is 0-20, x and y are 0-20, R1, R2, R3 and R4 are CH3 and C6H5, or R1 is H, R2, R3 and R4 are CH3 and C6H5, or R1 and R3 are H, R2 and R4 are CH3 and C6H5. The preparation method of polysilane-containing aryne resin uses aryne Grignard reagent to be reacted with terminated chlorine polysilane, while terminated chlorine polysilane is prepared by chlorination process and sodium condensation method. The inventive polysilane-containing aryne resin has better processing character, mechnical character, heat endurance, oxidation resistance and fire-retardancy, which can form ceramic material in high temperature and own better cementation with reinforcing fiber, with wide application in resin substrate and ceramic boving precursor.

The invention relates to a siliceous aromatic ether and aryne polymer and a preparation method thereof. The polymer is structurally characterized by comprising silicon atoms, aryne groups and an aromatic ether structure on a main chain. The siliceous aromatic ether and aryne polymer is polymerized from diacetylene-benzene or a dyhydroxy aromatic compound and dichlorosilane by Grignard reaction under an inert atmosphere. The preparation method of the polymer comprises the following steps of: firstly reacting haloalkane with magnesium powder to produce an alkyl magnesium halide Grignard reagent; and then reacting with the dyhydroxy aromatic compound to obtain an alkyl magnesium halide Grignard reagent of the dyhydroxy aromatic compound or reacting with diacetylene-benzene to obtain an alkyl magnesium halide Grignard reagent of diacetylene-benzene; and finally reacting with dichlorosilane to obtain the siliceous aromatic ether and aryne polymer. The invention has the advantages of simple process, short reaction time, easily controlled process condition and simple subsequent processing and is convenient to operate; in addition. The product of the method is stable at room temperature and easy to store, the condensate of the polymer has excellent heat-resisting stability and mechanical property and is a high-performance thermosetting resin with good heat-resisting property.

The invention discloses an organic ligand and a Pd/Pb-based bi-metal organic framework as well as a synthetic method and application of the organic ligand and the Pd/Pb metal organic framework. A structural formula of the Pd/Pb-based bi-metal organic framework (Pd/Pb-MOF) is [Pb4(C42H28N8O8Pd)(C2O4)Br4]n, wherein n is a nonzero natural number. The Pd/Pb-based bi-metal organic framework (Pd/Pb-MOF) is used as a catalyst to be applied to catalyzing benzyne homocoupling and catalyzing three-component coupling reaction of benzyne, boracic acid and allyl halohydrocarbon. The MOF catalyst with active sites can be used for replacing some heavy metals to achieve a catalytic effect, so that the harm of the heavy metals to the environment is reduced. The MOF catalyst with the active sites is used for catalysis, so that heterocatalysis is realized; additionally, the bi-metal organic framework catalyst can be recycled for more than four times, and the catalyst is easy to recycle, so that the utilization rate of the catalyst is increased, and the cost is reduced.

The present invention relates to a C/C-SiC composite material prepared by using a silicon-containing aryne resin as a precursor, and a preparation method thereof, wherein the silicon-containing aryne resin is a novel organic-inorganic hybrid resin and has characteristics of solubility and fusibility, heat resistance of the curing resin is significant, and the thermal decomposition residual rate (800 DEG C) is up to more than or equal to 90%. According to the present invention, the silicon-containing aryne resin is adopted as the precursor, and the precursor impregnation method (PIP) is used to prepare the C/C-SiC composite material; the concrete process comprises: impregnating fibers or a fabric with the silicon-containing aryne resin precursor solution or melt to prepare a silicon-containing aryne resin composite material, carrying out high temperature carbonization to obtain a porous C/C-SiC composite material, impregnating the porous C/C-SiC composite material with a silicon-containing aryne resin solution or melt, drying, curing, carrying out carbonization, and repeating the processes 2-6 times to obtain the good performance compact C/C-SiC composite material; and the technology has characteristics of simple impregnation process, simple carbonization process, high compactness efficiency and high material performance, and the C/C-SiC composite material can be used for aerospace and other high-tech areas.

The invention relates to a silica aryne resin containing carborane unit in main chain framework and a preparation method thereof. The method comprises the following steps: preparing a silica aryne resin from diacetylene-benzene and dihalogenated siloxane by an alkynyl Grignard reagent process, and reacting decaborane with the silica aryne resin under the action of a Lewis base to prepare the silica aryne resin containing carborane unit in main chain framework. The silica aryne resin containing carborane unit in main chain framework is soluble in common organic solvents, and has excellent workability; the resin solidified substance has excellent heat resistance and thermal oxygen stability; and the fiber-reinforced composite material has excellent mechanical properties, and has wide application prospects in the fields of aerospace and the like.

The invention relates to modified silicon-containing aryne resin. A preparing method of the modified silicon-containing aryne resin includes the following steps: (1) preparing silicon-containing aryne polymer, (2) preparing benzoxazine compound, (3) preparing propargyl ether compound, and (4) preparing the modified silicon-containing aryne resin, mixing 50-90 parts by weight of the silicon-containing aryne polymer obtained through the step (1), 5-25 parts by weight of the benzoxazine compound obtained through the step (2) and 5-25 parts by weight of the propargyl ether compound obtained through the step (3), and leading the mixture to be stirred for reacting in a reactor comprising a stirrer, a thermometer and a reflux condensing pipe with inert gases to obtain the modified silicon-containing aryne resin. The oxazine and alkyne compound modified silicon-containing aryne resin and the preparing method of the modified silicon-containing aryne resin have the advantages that the modified silicon-containing aryne resin can be dissolved in many common solvents, is low in softening point and melting resin viscosity, and can generate solidifying reaction under heat, irradiation and even light effect. Resin condensates are good in heat resistance and can be well bonded with reinforcing fiber, and compound materials of the modified silicon-containing aryne resin have good mechanical performance and heat resistance.

The invention relates to a method for synthesizing multi-substituted chromone compounds, which includes a step for generating a series of multi-substituted chromone compounds, namely, enabling 2,3-allenoic acid and benzyne generated on the spot to give an insertion/1,2-addition/ring opening/1,4-addition reaction in tetrahydrofuran. The method for synthesizing the multi-substituted chromone compounds is simple in operation, easily obtainable in raw materials and reagent, higher in reaction yield, capable of avoiding the shortcoming of difficulty in preparation and severe conditions of a traditional method precursor, easily separable and purificatory in products, and suitable for synthesizing the multi-substituted chromone compounds.

The invention relates to a benzofuran or naphthofuran derivative and a preparation method thereof. A structural formula of the derivative is shown in the specification, wherein R1 is OCH3, OC2H5 or CH3, and R2 is CH3 or C6 H5, or R1 and R2 are the same and are (CH2)3, CH2C(CH3)2CH2. The reaction is a typical [3+2] cycloaddition, aryne is produced to participate in the reaction to synthesize the benzofuran or naphthofuran derivative, the requirement of the atomic economic reaction can be met, a completely novel through is provided for establishing a skeleton of benzofuran or naphthofuran, the synthesis method of organic heterocyclic compound is enriched, and the research of the synthesis method of the benzofuran or naphthofuran derivative is not reported in any literature.

The invention discloses a new method for preparing triarylsulfonium salts, specifically: in the presence of a fluorine-containing accelerator, diarylsulfoxide and aryne precursors are reacted in a solvent to synthesize triarylsulfonium salts. The raw materials used in the method are cheap and easy to obtain, and the shortcomings of too strong alkalinity, strict requirements on reaction conditions and limited reaction substrates in the traditional method are avoided. The method has mild reaction conditions, good selectivity, high yield, easy separation of products and simple operation.

The invention discloses a bearing and ablative thermal protection integrated composite missile wing and rudder for a hypersonic missile, and a preparation method of the bearing and ablative thermal protection integrated composite missile wing and rudder. The preparation method comprises the following steps: (1) according to the situation that different hypersonic missile models have different requirements for the air flow temperature borne by the missile wing and rudder, the ablation time and the wing tip displacement under an aerodynamic load, the overall overlay structure of the missile wingand rudder is designed into two parts, namely a missile wing and rudder bearing layer and a missile wing and rudder ablation-resisting layer; and (2) one of a woven carbon/high-temperature epoxy prepreg cloth, a woven carbon/polyimide prepreg cloth and a woven carbon/bismaleimide prepreg cloth is selected as the missile wing and rudder bearing layer, and one of a carbon/phenol prepreg cloth, a carbon/benzoxazine prepreg cloth and a carbon/aryne resin prepreg cloth is adopted as the missile wing and rudder ablation-resisting layer, wherein the fiber mass content is controlled to be 65-75%. A carbon fiber prepreg cloth overlay one-time die-pressing process is adopted, and the performance defect caused by the fact that structural/functional layer matrix resin interpenetrates due to the excessively-high resin content, the early pressure applying moment and the excessively-large pressure, and consequently too much glue liquid of the missile wing and rudder ablation-resisting layer overflows is avoided.

The invention discloses a borazine aryne resin and a preparation method thereof. The borazine aryne resin is structurally characterized in that the polymer molecular chain contains borazine and aryl alkynyl structures. The preparation method of the resin comprises the following steps: on the basis of taking diacetylene-benzene, boron trihalide and ammonium chloride or organic primary amine as raw materials, reacting in three steps in the presence of an inert gas so as to synthesize the borazine aryne resin. The preparation method is simple in process, convenient to operate and short in reaction time, the process condition is easy to control, and the aftertreatment process is simple; the borazine aryne resin is reddish brown viscous fluid or faint yellow solid, and can be solidified in a light and thermal polymerization mode; the borazine aryne resin has excellent thermal resistance and low dielectric property, can be used for preparing an advanced resin-based composite material, can be also used as a low dielectric material, and can be widely applied to the fields of aerospace and electronic information.

The invention discloses a synthetic method of diaryl sultam compounds. According to the method, transition metal palladium is taken as a catalyst, N-methoxybenzenesulfonamide compounds and aryne precursors are subjected to a cyclization reaction based on functionalization of a C-H bond in an ortho-position of -SO2NHOMe in N-methoxybenzenesulfonamide in presence of fluoride, and a series of diarylsultam compounds are synthesized efficiently and conveniently. The method has the advantages of simple and easily available raw materials, simple reaction operation, high substrate applicability, highatom utilization ratio and the like.

The present invention discloses one kind of sesquisiloxane-multiaryne hybrid resin in the structure as shown, its preparation process with octo(dimethyl silicone) sesquisiloxane (Q8M811) and silicon-containing aryne oligomer, and its application in high temperature composite material, such as wave transmitting material, radiation resisting material, etc. The sesquisiloxane-multiaryne hybrid resin has broad application foreground in aviation, space flight, electronics, automobile industry and other fields.

The invention discloses a synthetic method of a conjugated alkenyl amidine compound, which comprises the following step: carrying out one-pot reaction on a Kobayashi aryne precursor derivative, N,N-dimethylformamide and an isonitrile compound under the action of fluorine ions to obtain the conjugated alkenyl amidine compound. According to the method, transition metal or noble metal catalysts are not needed, the reaction conditions are mild, the steps are simple, the substrate universality is good, the yield is good, and an intermediate raw material source is provided for drug synthesis.

The invention relates to an isoindolinone compound containing an eneyne structure and a synthetic method thereof. The compound has the structural formula that: a specific preparation method of the compound comprises the following steps: the isoindolinone and substituted aryne are dissolved in triethylamine according to the molar ratio of 1: (1.0-2.0), dichloro (triphenylphosphine) palladium and cuprous iodide are added in catalyst amount and mixed for reaction till the raw materials are disappeared, and the isoindolinone compound containing the eneyne structure is obtained through filtration, solvent removal and purification after the reaction. The isoindolinone compound containing the eneyne structure is a significant active skeleton of drug molecules and an organic synthetic intermediate, plays an important role in pharmaceutical chemistry and has potential physiological activity. The method has easy availability of raw materials, high reaction yield and wide application range of substrates. The conventional solvent is used in reaction, the operation is simple, the condition is mild, the reaction is environment-friendly, the reaction yield can reach up to 93%, and the method is particularly applicable to industrial production.

A new method of synthesizing 2,4-di-substituted benzothiazole is disclosed, wherein R and R' both can be aryl groups, alkyl groups and heterocyclic ring groups. The method includes the steps of mixing a substituted thioamide substrate and a fluorine-containing alkali with a reaction solvent 1,4-dioxane, adding a known benzyne precursor slowly into the reaction solution to prepare 2,4-di-substituted benzothiazole, and performing column chromatographic purification to obtain a finish product of which the yield is 75%. The new method is low in raw material cost and the raw material is easy to obtain. The new method is simple in operation, is less in synthetic steps, is high in yield and has important application value in the fields of pharmaceutical chemistry and organic synthesis.