186 results about "Boranes" patented technology

The methods described herein relate to deposition of low resistivity, highly conformal tungsten nucleation layers. These layers serve as a seed layers for the deposition of a tungsten bulk layer. The methods are particularly useful for tungsten plug fill in which tungsten is deposited in high aspect ratio features. The methods involve depositing a nucleation layer by a combined PNL and CVD process. The substrate is first exposed to one or more cycles of sequential pulses of a reducing agent and a tungsten precursor in a PNL process. The nucleation layer is then completed by simultaneous exposure of the substrate to a reducing agent and tungsten precursor in a chemical vapor deposition process. In certain embodiments, the process is performed without the use of a borane as a reducing agent.

A method for forming a metal comprises contacting a compound having formula 1 with a compound having formula 2 with an amine borane:

The invention provides an intermediate for synthesizing ezetimibe and a preparation process thereof, and also provides a method for synthesizing the ezetimibe by the intermediate. The synthesizing method has short route, and comprises the following concrete steps: a compound I and substituted 1, 3-propanediol react to generate a compound II; the compound II and pivalyl chloride react to generate a compound III; the compound III and a compound A react to generate a compound IV; the compound IV and a compound V react to generate a compound VI under the condition of a titanium compound catalyst; the compound VI is re-ringed to generate a compound VII with beta-lactam; the compound VII is hydrolyzed to produce a compound VIII; and the compound VII is reduced to a compound IX ezetimibe by a borane chiral reducing agent. The synthesization has short route and mild reaction condition; and the produced intermediate and final product has high yield and high purity.

The present invention relates to an organic electroluminescent device comprising an anthracene derivative represented by Formula (1) shown below as a host and at least one selected from a perylene derivative, a borane derivative, a coumarin derivative, a pyran derivative, an iridium complex and a platinum complex as a dopant. The organic electroluminescent device of the present invention has a high efficiency, a long life, a low driving voltage and a high durability in storing and driving.

wherein R¹ to R⁴ and R¹² are independently hydrogen or alkyl having 1 to 12 carbon atoms; R⁵ to R¹¹ are independently hydrogen, alkyl having 1 to 12 carbon atoms, cycloalkyl having 3 to 12 carbon atoms or aryl having 6 to 12 carbon atoms; and Ar is non-condensed aryl represented by Formula (3); and m is an integer of 1 to 3;

wherein n is an integer of 0 to 5; R¹³ to R²¹ are independently hydrogen, alkyl having 1 to 12 carbon atoms or aryl having 6 to 12 carbon atoms.

The invention provides a NiPt@RGO composite nano catalyst for producing hydrogen by using hydrazine borane and a preparation method thereof. The catalyst is prepared by using sodium borohydride (NaBH4) as a reducing agent to reduce precursors of metallic Ni and Pt and a graphene oxide (GO) carrier together. The catalyst shows very excellent catalytic performance and can catalyze the hydrazine borane at 50 DEG C, so that the hydrazine borane can be completely hydrolyzed, and hydrazine can be cracked to produce hydrogen, and the hydrogen turnover frequency (TOF) of the catalyst reaches 240 (molH2.mol<-1>metal.h<-1>). The method for preparing the catalyst is simple and convenient to operate, particularly the noble metal Pt content of the obtained optimal alloy catalyst is low (the molar ratio Ni/Pt is 9/1), and the catalyst is cheap and efficient.

The invention relates to application of anilino lithium, in particular to a method of preparing borate ester based on hydroboration reaction of aldehyde and borane. The method comprises the followingsteps of under the conditions without water and oxygen, in an inert gas atmosphere, adding the borane in a reaction bottle subjected to dehydration and deoxygenation treatment, then adding the anilinolithium as a catalyst, performing uniform mixing, then adding the aldehyde for hydroboration reaction, and performing exposure in the air for reaction termination to obtain the borate ester as a product, wherein the aldehyde is selected from fatty aldehydes. By adopting the method provided by the invention, the condition that the anilino lithium can extremely efficiently catalyze cyclohexanecarboxaldehyde, propionaldehyde and heptanal to generate hydroboration reaction with the borane is discovered for the first time, and a new scheme is provided to prepare the borate ester by adopting a carbonyl compound and the borane to generate the hydroboration reaction.

The present invention relates to a process for the production of hydrogen comprising contacting at least one complex of formula (I), (I) wherein: X⁻ is an anion; M is a metal selected from Ru, Os, Fe, Co and Ni; D is optionally present and is one or more monodentate or multidentate donor ligands; Y¹ is selected from CR¹³, B and N; Z¹ and Z² are each independently selected from ═N, ═P, NR¹⁴, PR¹⁵, O, S and Se; or Z² is a direct bond between carbocyclic ring B and substituent R⁴; each of A and B is independently a saturated, unsaturated or partially unsaturated carbocyclic hydrocarbon ring; R³ and R⁴ are each independently selected from H, C_1-6-alkyl, aryl and C_1-6-haloalkyl, and a linker group optionally attached to a solid support; or R³ and R⁴ together form the following moiety: (AB) Y² is a direct single bond or double bond, or is CR¹⁸; R¹, R², R^5-13 and R^16-18 are each independently selected from H, C_1-6-alkyl, C_2-6-alkenyl, C_2-6-alkynyl, aryl, C_1-6-haloalkyl, NR¹⁹R²⁰ and a linker group optionally attached to a solid support; or two or more of said R^1-13 and R^16-18 groups are linked, together with the carbons to which they are attached, to form a saturated or unsaturated hydrocarbon group; R¹⁴, R¹⁵, R¹⁹ and R²⁰ are each independently selected from H, C_1-6-alkyl, C_2-6-alkenyl, C_2-6-alkynyl, aryl, C_1-6-haloalkyl, and a linker group optionally attached to a solid support; with at least one substrate of formula (II), R²¹R²²NH—BHR²³R²⁴, wherein R²¹ to R²⁴ are each independently selected from H, C_1-6-alkyl, fluoro-substituted C_1-6-alkyl, C_6-14-aryl and C_6-14-aralkyl, or any two of R²¹, R²², R²³ and R²⁴ are linked to form a C_3-10-alkylene group or C_3-10-alkenylene group, which together with the nitrogen and/or boron atoms to which they are attached, forms a cyclic group; or a substrate comprising two, three or four substrates of formula (II) linked via one or more bridging groups so as to form a dimeric, trimeric or tetrameric species, and wherein the bridging group is selected from straight or branched C_1-6-alkylene optionally substituted by one or more fluoro groups, boron, C_6-14-aryl and C_6-14-aralkyl; or a substrate comprising two, three or four substrates of formula (II) which are joined so as to form a fused cyclic dimeric, trimeric or tetrameric species. Further aspects of the invention relate to a hydrogen generation system comprising a complex of formula (I), a substrate of formula (II) and a solvent, and to the use of complexes of formula (I) in fuel cells. Another aspect of the invention relates to novel complexes of formula (I).

The purpose of the present invention is to provide an electrical Al plating bath that poses little danger of exploding or igniting as a result of contacting air or water, and contains no benzene, toluene, xylene, naphthalene, or 1,3,5-trimethylbenzene, which have detrimental effects to humans. The present invention provides an electrical aluminum or aluminum alloy fused salt plating bath that is obtained by heat treatment of an electrical aluminum or aluminum alloy fused salt plating bath containing (A) a halogenated aluminum as the primary component and (B) at least one other type of halide after adding (C) one, two or more reducible compounds selected from the group consisting of hydrides of elements in Group 1 Periods 2 through 6 of the Periodic Table of Elements and/or hydrides of Group 13 Periods 2 through 6 of the Periodic Table of Elements and amine borane compounds.

The invention discloses application of o-methyl-anilino lithium in the catalysis of aldehyde and borane hydroboration. Borane is added into a reaction bottle that is dewatered and deoxidized in an inert gas atmosphere in an anhydrous oxygen-free environment; the catalyst, o-methyl-anilino lithium, is added; mixing is performed well before an aldehyde is added; hydroboration is carried out; the reaction is ended after exposure to air so as to obtain borates; the aldehyde is selected from aromatic aldehydes and heterocyclic aldehydes. The catalyst disclosed herein is well applicable to aromaticaldehydes and heterocyclic aldehydes having different substitution positions and electronic effects; more choices are provided to attain borates with different substituent structures.

The invention belongs to the biological medicine field, and discloses a targeted boron preparation and a preparation method and application. The target boron preparation comprises polyamidoamine-amine dendrimers, epidermal growth factor receptor antibody and polyhedral boranes, the polyamide amine dendrimers are connected with the epidermal growth factor receptor antibody, and are internally loaded with the polyhedral boranes. The targeted boron preparation is high in boron content, can meet the requirements of BNCT (boron neutron capture therapy) on the boron atom dose, is well targeted to tumor cells, has good stability and low cell toxicity, and can be efficiently uptaken by human glioma U87MG cells of high surface expression EGFR (epidermal growth factor receptor). The target boron preparation can effectively improve the content of boron in orthotopic transplantation tumor nude mice tumor tissues, can significantly prolong orthotopic transplantation tumor nude mice lifetime by neutron irradiation, and is suitable for boron neutron capture therapy for glioma. The preparation method of the targeted boron preparation has the advantages of simple operation, and the prepared targeted boron preparation has good stability.

The invention relates to high-energy welding-cutting gas, which relates to welding-cutting gas, and aims to solve the problems of environment pollution, high energy consumption and high cost existing when acetylene gas is used as welding-cutting gas. The high-energy welding-cutting gas is formed by mixing nano flame accelerator with natural gas, wherein the nano flame accelerator is formed by mixing jet fuel, ethanol, n-butyl alcohol, ethyl acetate, ethylene glycol monobutyl ether, tert-butyl hydroperoxide, 2-pentanone, nanometer aluminium oxide, nanocrystalline iron oxide and borane-pyridinecomplex. The high-energy welding-cutting gas has the advantages that: the nano flame accelerator is adopted, so that the flame of the natural gas is concentrated, the flame temperature rises, the useefficacy of acetylene gas is achieved, the cutting quality of workpieces is improved, safety is realized without tempering, the gas consumption and the oxygen consumption are greatly reduced, a bottle of high-energy welding-cutting gas with the volume being 3 cubic meters can replace a bottle of acetylene gas with the weight being 3 kg for use, the cost of the welding-cutting gas is one fifth of the cost of the acetylene gas, and the main component of the high-energy welding-cutting gas is the natural gas, so that the environment pollution is reduced compared with the acetylene gas. The invention is mainly used for preparing the welding-cutting gas.

The invention relates to the use of polycyclic aromatic hydrocarbons (PAHs) such as naphthalene and its alkyl, aryl, or heteroatom substituted analogs, that act as catalysts in the presence of an alkali metal (Li, K, Na) for the reduction of electron-deficient and electron-rich triaryl phosphines to their corresponding alkali metal diaryl phosphide salts. The process is also useful for the catalysis of triaryl phosphine chalcogen adducts such as the sulfides, oxides, and selenides, diaryl(halo)phosphines, triaryl phosphine-borane adducts, and tetra-aryl bis(phosphines) that can also be reduced to their corresponding alkali metal diaryl phosphide salts. The invention also relates to small molecule PAHs and polymer tethered PAHs naphthenics.

A lithium-ion battery (100) includes a positive electrode (110), a negative electrode (120) comprising carbon, and an electrolyte (130) containing a first and second additive. The first additive includes a borane or borate compound that acts as an ion receptor and the second additive includes an alkene capable of reacting on a surface of the negative electrode (120) to form an ionically conductive layer.

The present invention provides methods and devices for producing polyhedral boron compounds. The process is generally an anhydrous, one-pot process that comprises a pyrolytic reaction of a tetraborohydride with a quaternary amine salt to form the polyhedral borane. In another aspect of the present invention, polyhedral boranes are produced, without isolation of the Lewis base-borane complex.

The invention discloses application of n-butyllithium in catalyzing hydroboration of aldehyde and borane, a method of hydroboration comprises the following steps of in a water-free and oxygen-free environment, under the inert gas atmosphere, adding borane into a reaction bulb subjected to dehydration and deoxidization treatment, then adding a catalyst n-butyllithium, uniformly mixing, then addingaldehyde to perform hydroboration. Exposing to the air to stop the reaction after the reaction is finished, so as to obtain a product. The catalyst disclosed by the invention has better universality to aromatic aldehyde with different replace positions and different electronic effects as well as to heterocyclic aldehydes and fatty aldehyde, and more choice can be provided for obtaining boric acidester compounds with different substituent group structures.