20 results about "Alkyne formation" patented technology

The invention relates to the technical field of batteries, in particular to an electrolyte, a battery monomer, a battery device and an energy storage device. The electrolyte comprises a cyano siloxane compound shown in the formula, R1, R2, R3 and R4 independently comprise one of cyano, hydrogen, substituted or unsubstituted alkane, substituted or unsubstituted alkylene and substituted or unsubstituted alkyne, and at least two of R1, R2, R3 and R4 comprise cyano; r5, R6, R7, R8, R9 and R10 each independently comprise a substituted or unsubstituted alkane group. The electrolyte provided by the invention has good stability at normal temperature and high temperature, and is not easy to decompose.

The invention relates to the technical field of organic synthetic chemistry, and discloses a preparation method of alkenyl gem-diborate. According to the preparation method of the alkenyl gem-diborate, a cobalt catalyst serves as a core, a high-activity cobalt complex is formed under the combined action of a specific ionic N-heterocyclic carbene ligand and alkali, the complex can be reduced into a catalytic activity intermediate by a boron test, regeneration of the cobalt catalyst is achieved, and the next round of reaction continues to be catalyzed. The adopted cobalt catalyst is rich in reserves, low in price, easy to obtain and environment-friendly; reaction conditions are mild, and high efficiency and high selectivity are achieved; the reaction substrate functional group tolerance is high, the substrate source is wide, the method is suitable for aromatic alkyne, and aliphatic alkyne and alkyne with large steric hindrance can also be adopted; the reaction can be amplified to a gram scale for preparation; the yield, the selectivity and the purity of the product are improved; the invention provides a new synthesis route and method for alkenyl gem-diborates, and can provide alkenyl gem-diborates with various structures for synthesis of polysubstituted olefins, natural products or pharmaceutical molecules.

The invention discloses a preparation method of tris (propargyl) phosphorus oxide, and belongs to the technical field of battery electrolyte additives, and the preparation method specifically comprises the following steps: S1, carrying out low-temperature in-situ Grignard exchange and addition reaction, the method comprises the following steps: carrying out in-situ Grignard exchange and addition reaction on phosphorus trichloride, an alkyl lithium reagent and propargyl alcohol in an organic solvent to generate an intermediate tris (propargyl) phosphorous acid; s2, oxidation reaction: adding an oxidizing agent into the reaction system obtained in the step S1, and carrying out oxidation reaction to obtain tris (propargyl) phosphorus oxide; according to the method, the technical bottleneck of preparing the phosphorus-containing alkyne additive by a traditional fractional step method is broken through, a one-pot low-temperature synchronous dropwise adding in-situ reaction process is initiated, and efficient and high-selectivity synthesis of tris (propargyl) phosphorus oxide is realized.

The present invention provides a method for catalytic synthesis of organic semiconductor g-C3N4 ( E The invention relates to the technical field of organic synthesis. The invention uses selenium sulfonate and alkyne as reaction substrates, uses graphite phase carbon nitride g-C3N4 prepared by thermal polycondensation of urea as catalyst, and reacts freely in an organic solvent under light conditions to obtain ( E )-vinyl selenol sulfone compounds. The present invention is ( E The synthesis of )-vinyl selenolsulfone compounds provides a new pathway for preparing alkylaryl alkynes using this synthetic route, which offers mild reaction conditions and high yields. This invention utilizes the conveniently tunable and recyclable organic semiconductor g-C3N4 as a heterogeneous photocatalyst to achieve atom transfer radical addition reactions of alkynes in a metal-free environment, enabling precise control of the reaction's stereoselectivity and regioselectivity, and has promising application potential.

The present invention relates to polymer complexes comprising linear conjugates of LPEI and PEG. The LPEI fragment and the PEG fragment of the linear conjugate are preferably connected through [3 + 2] cycloaddition reaction between azide and olefin or alkyne to generate 1, 2, 3 triazole or 4, 5-dihydro-1H-[1, 2, 3] triazole. The linear conjugates are preferably further conjugated to targeting fragments to achieve selective interaction with specific cell types. The conjugate may form a polymer complex with a therapeutic agent (e.g., a nucleic acid) to deliver the therapeutic agent to a cell.

The invention provides a bidentate organic tellurium salt catalyst as well as a preparation method and application thereof. The bidentate organic tellurium salt catalyst has a structure as shown in a formula (I). According to the bidentate organic tellurium salt prepared by the invention, the activity of a chalcogenide bond catalyst is improved by introducing an electron-deficient aryl substituent and optimizing a linking group. A series of bidentate organic tellurium catalysts are efficiently developed and have excellent performance in activation of an azetidine structure and an aziridine structure, and it is proved that the chalcogenide bond action capacity of the bidentate organic tellurium catalysts is enhanced. This activation in turn initiates a [4 + 2] cycloaddition reaction with an unactivated olefin or alkyne.

The invention discloses a synthesis method and application of a 2,3-dicyanohydroquinone derivative. The compound uses 2,3-dicyanohydroquinone as the starting material for the reaction, and is subjected to a nucleophilic substitution reaction with a halogenated olefin or an alkyne to obtain the target product. The synthetic raw materials of the synthetic method are cheap and readily available, and the synthetic process is relatively simple. The 2,3-dicyanohydroquinone derivative has an olefin unsaturated alkoxy group and a cyano group on its structural benzene ring. When applied to a lithium-ion battery, a stable SEI film can be effectively formed during charge and discharge. In addition, the cyano group may form a relatively effective protective film on the positive electrode surface during the battery charge and discharge process, covering its active site, thereby reducing the reactivity of the positive electrode to the electrolyte, and reacting with HF acid at high temperature to reduce the damage of HF acid to the electrode surface and the current collector, thereby improving the high and low temperature performance and cycle performance of the battery.

The invention relates to the technical field of batteries, in particular to an electrolyte, a battery monomer, a battery device and an energy storage device. The electrolyte provided by the invention comprises a first additive, and the first additive comprises a fluorosulfonamide compound and an isocyanate compound, r1 and R2 respectively and independently comprise one of hydrogen, fluorine, substituted or unsubstituted alkane, substituted or unsubstituted alkylene, substituted or unsubstituted alkyne, substituted or unsubstituted alkyl carbonyl and substituted or unsubstituted alkyl nitrile, and at least one of R1 and R2 contains a fluorine element; and R3 comprises one of a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkyl carbonyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted alkoxy group and a substituted or unsubstituted heterocyclic group. Under the synergistic effect of the fluorosulfonamide compound and the isocyanate compound, the electrolyte has good stability and is not easy to decompose.

The invention provides a method for synthesizing delta-lactam containing a quaternary carbon center through nickel catalysis three-level C (sp3)-H activation. The invention relates to a method for constructing a quaternary carbon center-containing delta-lactam compound by activating and inserting alkyne into a three-level C-H bond of a formamide compound by connecting a phosphorus-oxygen ligand with a nickel-aluminum bimetallic catalyst, and belongs to the technical field of methodology development. The key points of the invention to solve the problem are as follows: (1) the coordination of Al to the substrate activates the substrate; (2) the bridging effect of the ligand guides the metal Ni to generate three-stage C-H bond fracture; (3) the catalyst and a substrate form a stable acyl Ni intermediate with a cyclic structure, and decarbonylation decomposition of the intermediate is inhibited; and (4) a protecting group with proper steric hindrance can repel a three-level C-H bond, so that the protecting group is close to the metal Ni center to be activated.

A solution including at least one metal salt, a reducing agent which makes it possible to reduce the metal salt, and a stabilising additive of formula F1 in which the Ra, Rb and Rc groups denote, independently of one another, an alkane, an alkene or an alkyne, which may be independently linear, branched or cyclic and which include from 1 to 20 carbon atoms, and where the Rd and Re groups denote, independently of one another, a hydrogen atom, or an alkane, an alkene or an alkyne, which may each be independently linear, branched or cyclic and which include from 1 to 20 carbon atoms.

The application discloses a carbon four alkyne selective hydrogenation catalyst and a preparation method thereof. The carrier alumina is a leaf-shaped aggregate structure. The carbon four alkyne selective hydrogenation catalyst comprises 8-25 wt% of nickel oxide, 0.05-5 wt% of silver oxide, 0-1.5 wt% of copper oxide and the rest of the carrier. The carbon four alkyne selective hydrogenation catalyst prepared by the application has the characteristics of high selectivity and good stability, and can be used to effectively reduce the alkyne content in carbon four fractions.

The invention belongs to the technical field of catalysts, and particularly discloses a Pd monatomic and nanoparticle synergistic catalyst and a preparation method and application thereof.The active component Pd of the catalyst is loaded on a zirconium phosphate carrier in the forms of monatomic and nanoparticles; the zirconium phosphate carrier is of an amorphous structure, and the specific surface area is 120-180m < 2 > / g; and the mass fraction of the active component Pd in the catalyst is 0.3-3 wt%. The invention solves the problem that the activity, stability and selectivity of the catalyst in the alkyne semi-hydrogenation reaction cannot be combined at the same time through the simple synthesis method.

A method of forming an element includes forming a dielectric layer on a substrate, the dielectric layer including at least one feature defining a gap including a sidewall and a bottom. The methods include selectively depositing a self-assembled monolayer (SAM) on the bottom of the gap. The SAM has general formulae I to XIX, where R, R ', R1, R2, R3, R4, and R5 are independently selected from the group consisting of hydrogen (H), alkyl, olefin, alkyne, and aryl, n is 1 to 20, m is 1 to 20, x is 1 to 2, and y is 1 to 2, the barrier layer is formed on the SAM prior to selectively depositing a metal liner on the barrier layer, and the SAM is removed after selectively depositing the metal liner on the barrier layer.

The application belongs to the technical field of functional materials, and particularly relates to modified graphene oxide based on wet chemical modification and a preparation method thereof. The preparation method of the modified graphene oxide based on wet chemical modification comprises the following steps: S1: performing a thiol-ene click reaction on graphene oxide to obtain mesoporous-containing graphene oxide; and S2: performing alkyne group modification on the mesoporous-containing graphene oxide to obtain alkyne group-modified graphene oxide, and then performing an azide-alkyne click reaction on the alkyne group-modified graphene oxide and azide-POSS to obtain modified graphene oxide based on wet chemical modification. The modified graphene oxide with a specific spatial structure is prepared, the specific surface area of the material can be effectively increased, and the stability under a high-temperature environment can be improved.

The invention discloses a method for synthesizing a silicon-group-containing tetra-substituted olefin compound through nickel catalysis, and belongs to the technical field of organic synthesis. According to the invention, nickel is adopted to catalyze a cascade reaction of three components of alkynyl silane, aryl iodide and an organic aluminum reagent, migration and insertion of alkyne by an aryl nickel intermediate are regulated and controlled through an alpha silicon-based effect to form an alkenyl nickel intermediate, and a metal conversion reaction is further carried out; two functional groups are successfully introduced into alkynyl to construct a series of silicon-containing tetra-substituted olefin compounds, the application of an organic aluminum reagent in a three-component coupling reaction is expanded, and a new method is provided for high-regioselectivity synthesis of tetra-substituted olefin.

This invention provides a selective hydrogenation catalyst for alkynes and its preparation method. The catalyst support is alumina or primarily alumina; the active components of the catalyst contain at least Pd and Ag, with Pd content of 0.02-0.04% and Ag content of 0.03-0.15% (preferably 0.05-0.15%) based on 100% of the support mass; an organic cage is formed within the catalyst, the distance between the organic cage and the outer surface of the catalyst is within 0.2 mm, and the size of the organic cage is 1.9-2.7 nm, with Pd supported within the organic cage. Using the catalyst of this invention for selective hydrogenation of C2 fractions, the yield of butene can be reduced to less than half that of conventional catalysts.

This invention belongs to the semiconductor field, specifically relating to a stress-controllable amorphous carbon film and its preparation method. The stress of the amorphous carbon film of this invention ranges from -100 to 100 MPa. This invention employs traditional PECVD thin film deposition conditions, controlling the doping ratio of deposition gases such as C2-C4 alkynes, C2-C4 alkenes, and C1-C4 alkanes to obtain amorphous carbon films with specific tensile stress, compressive stress, and neutral stress. This invention develops a method for preparing stress-controllable amorphous carbon films through deposition gas doping. This method is simple, the process is stable and controllable, and process adjustment parameters can be added, making it suitable for processes with high requirements for stress conditions.

The invention belongs to the technical field of functional materials, and particularly relates to modified graphene oxide based on wet chemical modification and a preparation method thereof. The preparation method of the modified graphene oxide based on wet chemical modification comprises the following steps: S1, carrying out thiol-ene click reaction on graphene oxide to obtain graphene oxide containing mesopores; and S2, carrying out alkynylation on the graphene oxide containing mesopores to obtain alkynylated graphene oxide, and then carrying out azide-alkyne click reaction on the alkynylated graphene oxide and azidation POSS (Polyhedral Oligomeric Silsesquioxane) to obtain the modified graphene oxide based on wet chemical modification. The modified graphene oxide with a specific space structure is prepared, the specific surface area of the material can be effectively increased, and the stability in a high-temperature environment is improved.

The invention discloses a series of chiral monophosphine ligands derived from quinazolinone as well as a synthesis method and application of the chiral monophosphine ligands. Through experiments, the applicant discovers that the chiral monophosphine ligand derived from quinazolinone can catalyze an allyl substitution reaction and an alkyne cyclization reaction when being used as a catalyst ligand and matched with a palladium catalyst or a gold catalyst, enantioselectivity of the reaction is improved, and when the chiral monophosphine ligand derived from quinazolinone is matched with the palladium catalyst to be applied to the allyl substitution reaction, the chiral monophosphine ligand derived from quinazolinone can be used for catalyzing the allyl substitution reaction and the alkyne cyclization reaction. The enantioselectivity of the reaction reaches 90% or above.

The invention discloses a carbon electrode full-inorganic perovskite cell comprising an alkyne derivative and a preparation method thereof, and belongs to the technical field of perovskite solar cells. According to the method, tetra (4-ethynylphenyl) methane (TEPM) is introduced into a perovskite precursor solution, and the method is obviously different from a traditional process. Ethynyl (-C is equivalent to CH) in TEPM molecules has sp hybrid carbon atoms, lone pair electrons of the acetenyl (-C is equivalent to CH) can serve as ligands to form coordinate bonds with under-coordinated Pb < 2 + > in perovskite, and defects are effectively passivated; meanwhile, TEPM regulates and controls the crystallization process of the perovskite thin film through a steric hindrance effect and pi-pi interaction, and the morphology and the crystallization quality of the thin film are improved; and the conjugated structure can also enhance the charge transfer efficiency and reduce the non-radiative recombination loss.