55 results about "Silver trifluoromethanesulfonate" patented technology

A method of enhanced speciation of both positive and negatives species in an analyte is disclosed. The method can include producing a first analyte solution comprising an analyte composition and an effective amount of silver triflate, and analyzing the first analyte solution with an electrospray ionization mass spectrometer. The method can also include producing a second analyte solution comprising a portion of the analyte composition and an effective amount of a compound of formula I, and analyzing the second analyte solution with an electrospray ionization mass spectrometer. The compound of formula I is [NX⁺][OH⁻], where X is a linear, branched, or cyclic C₁-C₁₀ alkane; an aryl; a heterocyclic aromatic; or a heterocyclic moiety.

The invention provides a method for synthesizing a quinoline derivative by utilizing arylamine, aromatic aldehyde and ketone, and belongs to the technical field of the synthesis of the quinoline derivative. According to the method for synthesizing a quinoline derivative by utilizing arylamine, aromatic aldehyde and ketone, in the existence of silver trifluoromethanesulfonate and trifluoromethanesulfonic acid, the quinoline derivative is synthesized by virtue of the reaction of an arylamine compound, an aromatic aldehyde compound and ketone compound. A reaction general formula is as shown in the specification. Compared with the prior art, the method is not only applicable to a great amount of functional groups, but also is simple in operation, high in yield, single in product structure, convenient to separate and purify, safe, low in price and small in pollution.

The invention relates to the synthesis technology of new luminescent materials, and is a new-type electrically neutral tridentate iridium [III] complex red light material and a preparation method thereof. It is a 6-[5-trifluoromethylpyrazole]-2,2'-bipyridine·2,6-diphenylpyridine iridium[III] complex. Under the protection of nitrogen, the trihydrate iridium trichloride [III] metal salt reagent and 6-[5-trifluoromethylpyridine]-2,2'-bipyridine tridentate chelate ligand were heated in ethanol, and the reaction The liquid was pumped dry for recrystallization, filtered, washed, and vacuum-dried to obtain an orange-yellow solid intermediate; in a nitrogen glove box, the orange-yellow intermediate, silver trifluoromethanesulfonate, and 2,6-diphenylpyridine ligand were uniformly mixed , ground into powder, heated, after the reaction solution was cooled to normal temperature, the filtrate was collected and dried to obtain the crude product, the crude product was separated, the second orange-red eluate was collected and dried, and vacuum-dried to obtain the final product, the yield was up to 30-68%.

The invention provides a method for preparing halogenated benzo [alfa] fluorenol. The method comprises the following step of performing series electrophilic cyclization reaction on 3-aryl-1-(2-(2-aryl ethinyl) phenyl) propargyl-2-alcohol serving as a reaction substrate and various electrophilic reagents such as halogenated succinimide (NXS, X=I, Br and Cl) or simple substance iodine (I2), simple substance bromine (Br2) or iodine chloride (ICl) at the temperature of 0 and 15 DEG C for 10 and 15 hours under the catalysis of AgOTf, and is a 'one-pot method' for efficiently preparing the Halogenated benzo [alfa] fluorenol. The method has the advantages of mild reaction conditions, low cost, less side reaction, high product purity, is easy to operate and can be applied to mass production of the halogenated benzo [alfa] fluorenol; and moreover, separation and purification can be conveniently realized.

The invention belongs to the technical field of organic chemistry, in particular to a method for preparing a 2-amino-1,2-dihydro-isoquinoline compound. The structure of the compound is characterized and confirmed by methods including 1H-NMR, 13C-NMR, HRMS, single-crystal X diffraction, and the like. The method comprises the following steps of: under the catalytic condition of silver triflate and N-heterocyclic carbene, carrying out one kettle method of series intramolecular cyclization and polarity reversal addition reaction on o-alkynyl phenyl hydrazone and alpha, beta-unsaturated aldehyde in tetrahydrofuran, methanol and alkali to efficiently prepare the 2-amino-1,2-dihydro-isoquinoline compound- a. The method has the advantages of high reaction efficiency, mild conditions, simple operation, lower cost, high product purity, convenient separation and purification and is suitable for large-scale preparation. The skeleton structure of the product has wide spectrum biological activity, and the compound has wide application prospect in discovery of new drugs.

The invention belongs to the technical field of organic chemistry and pharmaceutical chemistry, and in particular relates to a method for stereoselective preparation of derivatives of pyrane. The method comprises the following steps of: under the protection of inert gases, adding derivatives of 1-p-tolylthio-2-C-glyoxyl-alpha-D-glucopyranose, derivatives of 1-thiophenyl-2-C- glyoxyl-alpha-D-glucopyranose or derivatives of 1-ethylthio p-tolyl-2-C-glyoxyl-alpha-D-glucopyranose, which serve as reactants, into a reactor, adding alcohol, phenol, trimethylsilyl azide or monosaccharide derivatives, adding a solvent such as methylene chloride to dissolve the raw materials, and performing the reaction at the reaction temperature of between 40 DEG C below zero and room temperature in the presence of a catalyst which is N-iodosuccinimide, or N-bromosuccinimide, or copper bromide and tetrabutylammonium bromide, or iodine, bromine simple substance or N-iodosuccinimide and trimethylsilyl triflate, or trifluoromethanesulfonic silver, or paratoluenesulfonic acid or trifluoromethanesulfonic acid to obtain the derivatives of pyrane. The method has the advantages of simple operation, high selectivity, low cost, light environmental pollution and the like.

The invention provides a method for synthesizing quinoline by aromatic amine and diketone and belongs to the technical field of synthesis of the quinoline. According to the method for synthesizing the quinoline by the aromatic amine and the diketone, under the existence of silver trifluoromethanesulfonate and trifluoromethanesulfonic acid, the quinoline is synthesized by reaction between the aromatic amine compound and the diketone compound; the reaction general formula is shown in the specification. Compared with the prior art, the method not only is suitable for a large number of functional groups but also is simple in operation, high in yield, single in product structure, convenient for separation and purification, safe, low in cost and low in pollution.

The invention provides a method for synthesizing a quinoline derivative. Aromatic amine, electrophilic alkyne and alkyne are sequentially added into a reaction vessel according to the molar ratio of 1:1:(1.2-4), solvent is added according to the proportion that 2-4 mL of solvent is added into 1 mmol of aromatic amine, then catalyst silver trifluoromethanesulfonate (AgOTf) with the molar weight being 0.8-5% that of aromatic amine and additive trifluoromethanesulfonic acid (HOTf) with the molar weight being 1.8-10% that of aromatic amine are added, reaction is conducted for 8-24 h at 100-120 DEG C in oil bath, the product is cooled to room temperature, water is added, the product is extracted three times with ethyl acetate, organic layers are combined, decompressive condensing is conducted, the product is subjected to column chromatography purification, and the product, namely the quinoline derivative, is obtained. The quinoline derivative has the advantages that reaction substrates are low in price, the yield is high, selectivity is good, separation and purification are easy, pollution is little, and steps are simple.

The invention relates to a beta-carbonyl-(alpha-cyanoimine) compound and a synthesis method thereof, wherein the compound has a structural formula defined in the specification, R<1> is hydrogen, methyl, methoxy, ester, fluorine, chlorine, bromine, alkenyl or alkynyl (C2-C3), R<2> is hydrogen or methyl, and R<3> is hydrogen or methyl. According to the present invention, the beta-carbonyl-(alpha-cyanoimine) compound is a valuable organic synthesis intermediate, wherein the carbonyl cyanoimine skeleton exhibits various reaction activities, such that the beta-carbonyl-(alpha-cyanoimine) compound can be converted into other corresponding active compounds; the raw materials used in the method are simple and easy to obtain, and t-butyl isocyanide is used as the cyano source of the reaction, and has the best reactivity and the best substrate adaptability under the promotion of silver trifluoromethanesulfonate; and the conventional reaction solvent is used during the reaction process, and the method has characteristics of simple operation, mild condition, environmental protection and general-to-excellent yield, and has good development prospect in industrial production.

The invention discloses a 1,2-dihydroisoquinolin derivative and a preparation method thereof, relating to a midbody which can be used for synthesizing natural alkaloid and a preparation method thereof. The 1,2-dihydro-isoquinolin derivative has a structure of formula (I). In the formula, R1 is meta-position or ortho-position substituted electron donating or weak electron-withdrawing aromatic group or H; R2 is methyl or ethyl; R3 is hydrogen or alkyl; and R4 is meta-position or ortho-position substituted aromatic group. The mol ratio of diazonium, alcohol (or water), imine, rhodium acetate and silver trifloromethanesulfonate is 1.2:1.2:1:0.01:0.05. A solvent, the alcohol (or water), the imine and a catalyst are used for preparing a mixed solution. Then, the diazonium is evenly mixed with another solvent to prepare diazonium solution which is then infused into the mixed solution. The solvent is removed by reduced pressure distillation at a temperatre of 40-70 DEG C. Column chromatographic separation is carried out to obtain the pure product of the 1,2-dihydro-isoquinolin derivative. When the 1,2-dihydro-isoquinolin undergoes reduction reaction, a tetrahydroisoquinoline derivative with pharmaceutical activity can be generated. The 1,2-dihydroisoquinolin derivative is an important structural unit of a great number of natural products and can be used as a midbody which can be used for synthesizing natural alkaloid.

The invention relates to a method for synthesizing icariin by glucosidation of dehydrated epimedium herb. The conventional method for synthesizing icariin by glucosidation of dehydrated epimedium herb is low in selectivity. For solving the problem, the method uses strontium carbonate as a catalyst and comprises the following steps: dissolving dehydrated icaritin in an organic solvent; reacting the icaritin with alpha-bromotetraacetyl-D-glucopyranose in the presence of strontium carbonate to perform glucosidation at position-3; reacting the product of the glucosidation with alpha-bromotriacetyl-L-rhamnopyranoside in the presence of a silver trifluoromethanesulfonate catalyst to perform glucosidation at position-7; and performing deacetylation reaction to obtain icariin. The method is suitable to synthesize icariin.

The invention discloses an axially chiral biaryl compound with a P-stereo center and a synthesis method and application thereof. The structural formula of the compound is shown in the specification, chiral trivalent rhodium [CpXRh(III)] is used as a catalyst, diaryl phosphonamide and diaryl acetylene are used as raw materials, and enantioselective coupling is conducted under the assistance of silver trifluoromethanesulfonate or silver hexafluoroantimonate and silver acetate to obtain the compound. Diarylacetylene is taken as an initial raw material, the compound is stable in property and easy to prepare, but the compound is seldom applied to arylation reaction. In the prior art, aryl arylation is mainly carried out by using brominated aromatic hydrocarbon, arylboronic acid and the like. The simple diarylacetylene is adopted as an arylation reagent, the axially chiral biaryl and the P-center chiral compound are stereoscopically and specifically synthesized through double activation of C-H bonds in the aryl phosphonamide and the diarylacetylene, and the method has the advantages of being mild in reaction condition, high in enantioselectivity, good in diastereoselectivity and the like.

The invention discloses a synthetic method of a nitrogen-containing spiro compound. The method comprises adding an imine derivative, a maleimide compound, diiodide pentamethyl cyclopentadiene cobalt carbonyl, silver trifluoromethanesulfonate and nitrobenzene in an organic solvent, performing heating for a reaction in a vacuum-pumping condition, and after the reaction is completed, performing post-treatment to obtain the nitrogen-containing spiro compound. According to the method, simply-available raw materials are adopted to synthesize the nitrogen-containing spiro compound in one step. The method is high in conversion efficiency and good in atom economy. The synthetic method is simple to operate, high in reaction yield and wide in substrate adaptability.

The invention relates to a silver nanowire and a preparation method and application thereof. The preparation method of the silver nanowire comprises the following steps that silver salt is dissolved in a first solvent, a first mixture is obtained, the silver salt is selected from at least one of silver trifluoromethanesulfonate, silver diethyl dithiocarbamate and succinimide silver salt, and the first solvent is water; a seed crystal, a reducing agent and a dispersing agent are dissolved in a second solvent at the temperature of 48-72 DEG C, a second mixture is obtained, the seed crystal is selected from at least one of tri-silver citrate or silver tetrafluoroborate, and the second solvent is water; and the first mixture and the second mixture are mixed in a dropwise adding manner, the pHis adjusted to 8-8.5, solid-liquid separation is carried out, and the silver nanowire is obtained. By means of the preparation method, the silver nanowire with the good bending resistance and the longlength-diameter ratio can be obtained.

The invention discloses an isosteviol sulfoacid silver supramolecular gel and a preparation method and an application thereof in preparation of nano silver, and belongs to the field of functional materials. The gel is prepared by esterification, sulfonation and salt-forming of the natural product isosteviol and is provided with a silver trifluoromethanesulfonate structural segment. The structureis shown in Formula 1, wherein R is an alkane group and an aromatic hydrocarbon group. The gel has good gel properties, the lowest gel concentration is as low as 0.2%w / v, and the nano silver can beprepared in situ through the green and convenient photoluminescence reduction process. The gel system has the advantages of a simple preparation method, low cost, and recoverable and reusable solvent.The prepared nano silver particle size is uniform and the method is simple, so that a convenient template for the preparation of the nano silver is provided. Please see the Formula 1 in the description.

The invention relates to a synthesis method of an alpha-thioether aryl acetonitrile compound. A structural formula of the compound is as shown in the specification, wherein R1 = hydrogen, methyl, isopropyl, phenyl, fluorine or bromine; R2 = hydrogen, methyl or chlorine; R3 = hydrogen, methyl or bromine; and R4 = tert-butyl or 1-adamantyl. According to the method, raw materials are simple and easy to obtain, t-butyl isocyanide is used as a cyano source of a reaction, and relatively high reactivity is exhibited under catalysis of silver trifluoromethanesulfonate. In a reaction process, the operation is simple, the condition is mild, the environment is friendly, and the yield is general to moderate. New compounds can be synthesized by applying the method, and the new compounds have potential medicinal values, so that the method has good application prospects in industrial production.

The invention discloses an iridium complex electroluminescent material, and the structural formula is shown in the specification. A preparation method comprises the following steps: under the protection of nitrogen, carrying out a heating reaction on a compound A and iridium trichloride trihydrate to generate B, carrying out a reaction on the B and silver trifluoromethanesulfonate to generate C, and finally, carrying out a reaction on the C and a compound D to obtain the iridium complex electroluminescent material. The invention also discloses an organic electroluminescent device containing the iridium complex electroluminescent material, the organic electroluminescent device comprises a first electrode, a second electrode and one or more organic matter layers arranged between the first electrode and the second electrode, and the organic matter layers contain the iridium complex electroluminescent material. According to the iridium complex electroluminescent material, a specific heterocyclic ligand is selected for combination, the wavelength of the compound is adjusted, and after the obtained iridium complex electroluminescent material is used for an organic electroluminescent device, the luminous efficiency of the device is improved, and the service life is prolonged.

The invention relates to an application of a palladium source catalyst in catalyzing alkyne polymerization, and belongs to the field of alkyne polymerization. The application is the application of thepalladium source catalyst in catalysis of a polymerization reaction for alkyne polymerization as a catalyst, and catalysis of disubstituted alkyne polymerization as a catalyst. The catalyst is different from known palladium catalysts, the palladium source can be directly purchased, polymerization of disubstituted alkyne can be catalyzed without coordination with various ligands, in the polymerization process, no cocatalyst such as silver trifluoromethanesulfonate (AgOTf) and sodium tetrakis(3,5-bis(trifluoromethyl)phenyl) borate (NaBAF) needs to be added, a polymer with high molecular weightcan be obtained, and cis-selective poly(1-chloro-2-phenylacetylene) (PCPAs) with high molecular weight and narrow molecular weight distribution is obtained. The method solves the problems of complex synthesis of a disubstituted alkyne polymerization catalyst, participation of the cocatalyst in the polymerization process, high cost and the like, is simpler, more economical and more efficient, and provides a new idea for polymerization of disubstituted alkyne.