20 results about "Arylsulfonic Acids" patented technology

The invention relates to the technical field of bio-refinery, and particularly discloses a method for separating non-condensed lignin with a relatively high beta-O-4 structure retention rate from lignocellulose through mild deconstruction. Lignocellulose is used as a raw material, an aryl sulfonic acid / alcohol solvent and a modifier have a synergistic effect, a deconstruction reaction system is used, and non-condensed lignin is efficiently separated through a microwave-assisted heating reaction; selectively breaking a lignin-carbohydrate compound bond by aryl sulfonic acid; the alcohol component is used for dissolving lignin and forming a pi-pi protection cage; according to the method, imidazolyl cations in the modifier swell cellulose microfibrils, oxalic acid synchronously cracks hemicellulose-lignin ester bonds, meanwhile, excessive breakage of beta-O-4 ether bonds is inhibited, and non-condensed lignin with the high beta-O-4 bond retention rate is obtained by adding water for precipitation. The method not only improves the extraction efficiency and structural integrity of lignin, but also provides an effective way for realizing high-valued conversion of lignocellulose resources.

The invention relates to a composition for producing polyurethane foams, which contains polyalkylene oxide-modified aryl sulfonic acid esters as an additive, and to the use of aryl sulfonic acid esters in the production of polyurethane foams.

Method to produce an upgraded oil using a lignin-rich feedstock, said method comprises the following steps: - providing a lignin-rich feedstock, wherein said lignin-rich feedstock comprises more than 60 wt% of lignin-based compounds obtained from delignification of biomass, where said lignin-based compounds are selected from the group consisting of: lignin-derived monomers, lignin-derived dimers, lignin-derived oligomers and combinations thereof; - providing an acidic composition having a pH of less than 1, said acidic composition comprising:  an acid selected from the group consisting of: sulfuric acid; an alkylsulfonic acid; and an arylsulfonic acid; and  an alcohol selected from the group consisting of C1-C8 linear alcohol and C3-C8 branched alcohol and mixtures thereof; - combining said lignin-rich feedstock with said acidic composition into a reaction mixture; - heating up said mixture to a temperature ranging from 25oC to 120oC; and - allowing sufficient time of reaction to convert at least a portion of said lignin-derived material into said at least one esterified lignin derivative; - separating said at least one esterified lignin derivative from said acidic composition; - performing a hydrodeoxygenation reaction on said at least one esterified lignin derivative, wherein the hydrodeoxygenation reaction is carried out in the presence of a hydrogen-rich source at a temperature ranging from 250oC to 400oC under a H2 pressure ranging from 15 to 50 bar, more preferably 35 bar, in the presence of a catalyst adapted for HDO reactions, for a period of time sufficient to result in an upgraded oil having a TAN of about 2.5 mg KOH / g and viscosity of 3.4 cP.

The invention discloses a method for preparing gamma, delta-unsaturated ketone by using oxalic acid and a mixed acid catalyst thereof. The invention provides a preparation method of a compound as shown in a formula I. The preparation method comprises the following steps: a compound as shown in a formula II and a compound as shown in a formula III are subjected to ketonization reaction at 90-120 DEG C in the presence of a catalyst to generate the compound as shown in the formula I. R1 is C1-C3 alkyl, R2 is C1-C16 alkyl or C2-C16 alkenyl; the catalyst is oxalic acid or mixed acid of oxalic acid and acid A; the acid A is selected from one or more of phosphorous acid, phosphoric acid, alkyl sulfonic acid or aryl sulfonic acid; in the mixed acid, the molar percentage content of the oxalic acid is greater than 50%. According to the preparation method, the reaction selectivity can be improved, and side reactions and high-boiling raffinate are reduced; the catalyst is low in cost, and the reaction system is high in yield. The preparation method disclosed by the invention is simple and convenient to operate, low in cost, green and environment-friendly.

The present invention pertains to a carbon dioxide concentration device provided with a first electrode belonging to a cathode, a second electrode belonging to an anode disposed so as to be spaced apart from the first electrode, and at least one electrolyte solution filled between the first electrode and the second electrode and present in contact with the first electrode and the second electrode, at least one of the electrolyte solutions contains a compound represented by formula (1) or a salt thereof, and water. (In formula (1), R1 to R10 each independently represent a hydrogen atom, an alkyl group, a hydroxyl group or a salt thereof, an alkoxy group, a nitro group, an amino group, a mercapto group, a cyano group, a halogen group, an aryl group, a sulfonic acid group or a salt thereof, a carboxyl group or a salt thereof, a carbonyl group, a sulfonyl group, or a heteroaryl group. )

The present application relates to the field of compound preparation, in particular to a novel preparation method of aryl sulfonic acid, which uses fluoropyridine containing electron-withdrawing substituents (halogen, trifluoromethyl, nitro, cyano and the like) as starting material, and obtains aryl sulfonic acid compound through three-step reaction. According to the present application, a preparation method for manufacturing aryl sulfonic acid compound using easily obtained compound under relatively mild reaction condition can be provided.

Crosslinked aromatic compounds having the structure (I) are described. Compositions comprising these cross-linked compounds are also described. For example, a composition also includes a photoacid generator. Furthermore, methods of coating a substrate using such a composition and generating an image by exposing it to radiation, which can be used as a mask in microelectronic manufacturing, are described. Also disclosed is a process for the selective iodination of a polyphenol compound at the ortho-position of the phenolic function using a 1-iodopyrrolidine-2, 5-dione moiety to produce a phenolic precursor of a cross-linked aromatic compound by selective iodination in the presence of an aryl sulfonic acid. (I)

A method for converting a lignin-derived material into at least one esterified lignin derivative, said method comprising the steps of: - providing said lignin-derived material selected from the group consisting of: lignin monomers; lignin depolymerization products; and combinations thereof; - adding a strong acid such as, sulfuric acid; - providing an amount of peroxide component in quantity sufficient to obtain up to a 1:1 mole ratio with said strong acid; - adding said peroxide component to said lignin-derived material and said strong acid to allow an oxidation reaction to take place for a pre-determined period of time sufficient to yield a composition comprising a pre-treated lignin-derived material; wherein said pre-treated lignin-derived material comprises at least one oxidized specie; - performing an esterification reaction on said composition comprising a pre-treated lignin-derived material, said esterification reaction comprising the following steps: o providing an acidic composition having a pH of less than 1, said acidic composition comprising: ▪ an acid selected from the group consisting of: sulfuric acid; an alkylsulfonic acid; and an arylsulfonic acid; and ▪ an alcohol selected from the group consisting of: C1-C8 linear alcohol and C3-C8 branched alcohol and mixtures thereof; o combining said pre-treated lignin-derived material with said acidic composition into an esterification reaction mixture; o heating up said esterification reaction mixture to a temperature ranging from 25oC to 120oC; and o allowing sufficient time for an esterification reaction to occur to yield an esterified composition comprising said at least one esterified lignin derivative; wherein said esterified composition has an average molecular weight of less than 4000, as determined by gel permeation chromatography.

Crosslinking aromatic compounds are described which have structure (I). Also described, are compositions including these crosslinking compounds, for instance ones which also comprising a photoacid generator. Also, described are methods of using such compositions to coat a substrate and by exposing it to radiation producing an image which may be used as a mask in the manufacture of microelectronics. Also disclosed is a selective iodination method for multiphenolic compounds at the ortho position to the phenol functionality, employing a 1-iodopyrrolidine-2,5-dione moiety in the presence of an arylsulfonic acid which produces the phenolic precursors of crosslinking aromatic compounds with selective iodination.

A method for converting a lignin-derived material into at least one esterified lignin derivative, the method including the steps of: providing the lignin-derived material selected from the group of lignin monomers, lignin depolymerization products, and combinations thereof; adding a strong acid such as, sulfuric acid; providing an amount of peroxide component in quantity sufficient to obtain up to a 1:1 mole ratio with the strong acid; adding the peroxide component to the lignin-derived material and the strong acid to allow an oxidation reaction to take place for a pre-determined period of time sufficient to yield a composition comprising a pre-treated lignin-derived material; wherein the pre-treated lignin-derived material comprises at least one oxidized specie; and performing an esterification reaction on the composition comprising a pre-treated lignin-derived material, the esterification reaction including the steps of: providing an acidic composition having a pH of less than 1, the acidic composition including an acid selected from sulfuric acid, an alkylsulfonic acid, and an arylsulfonic acid, and an alcohol selected from C1-C8 linear alcohol and C3-C8 branched alcohol and mixtures thereof; combining the pre-treated lignin-derived material with the acidic composition into an esterification reaction mixture; heating up the esterification reaction mixture to a temperature ranging from 25° C. to 120° C.; and allowing sufficient time for an esterification reaction to occur to yield an esterified composition comprising the at least one esterified lignin derivative; wherein the esterified composition has an average molecular weight of less than 4000, as determined by gel permeation chromatography.

Provided is a means for producing a dip-molded article comprising a chlorosulfonated polyolefin without using sodium alginate. More specifically, provided is a chlorosulfonated polyolefin latex containing: (A) a chlorosulfonated polyolefin; (B) a surfactant having an anionic portion and a nonionic portion, the nonionic portion including a polyoxyalkylene chain and the anionic portion including a carboxylate salt, a sulfonate salt, a carbonate salt, a sulfate ester salt, or a phosphate ester salt; (C) at least one surfactant selected from the group consisting of an amino acid-type surfactant, an alkylarylsulfonic acid-type surfactant, an alkylsulfuric acid-type surfactant, and a sulfosuccinic acid-type surfactant; and (D) an aqueous dispersion medium.

A method of condensing a lignin-derived material and converting at least a portion thereof into at least one esterified lignin derivative, said method comprising the steps of: - providing said lignin-derived material present in a LHDO composition, wherein said lignin-derived material is selected from the group consisting of: lignin monomers; lignin depolymerization products; and combinations thereof; - adjusting the LHDO composition to a pH less than 1; - heating said LHDO composition for a period of time sufficient to yield a heat-treated LHDO comprising at least one condensed aromatic structure; wherein said heat-treated LHDO has a higher molecular weight average than said LHDO composition; - performing an esterification reaction on said heat-treated LHDO, said esterification reaction comprising the following steps: o providing an acidic composition having a pH of less than 1, said acidic composition comprising: ▪ an acid selected from the group consisting of: sulfuric acid; an alkylsulfonic acid; and an arylsulfonic acid; and ▪ an alcohol selected from the group consisting of: C1-C8 linear alcohol and C3-C8 branched alcohol and mixtures thereof; o combining said heat-treated LHDO with said acidic composition into an esterification reaction mixture; o heating up said esterification mixture to a temperature ranging from 25oC to 120oC to convert at least some of said lignin-derived material and / or said at least one condensed aromatic structure present in said heat-treated LHDO into said at least one esterified lignin derivative.

The invention relates to the technical field of biological detection and fluorescence labeling, and particularly discloses an alkynyl-substituted azaindole polymethine cyanine dye and a synthesis method and application thereof, the alkynyl-substituted azaindole polymethine cyanine dye has a structure as shown in the following general formula I: in the general formula I, X is selected from H, F, Cl, Br or I; y is a C or N atom; n is an integer of 0, 1 or 2; r1, R3, R5 and R6 are respectively and independently selected from hydrogen, C-Calkyl, C-Ccarboxy alkyl, aryl, aryl carboxylic ester, C-Calkyl sulfonate, aryl sulfonate, C-Calkyl sulfonamide or aryl sulfonamide; r2 and R4 are respectively and independently selected from hydrogen, halogen,-COOH,-NHH,-SOH,-SONHH, C-Calkyl carboxylic ester, C-Camino alkyl, aryl, aryl carboxylic ester, C-Calkyl sulfonate, aryl sulfonate, C-Calkyl sulfonamide or aryl sulfonamide.

The invention provides an norcamphane skeleton monophosphine ligand L modified palladium complex as well as a preparation method and application thereof. The palladium complex has a structure represented by the formula wherein L is an norcamphane skeleton monophosphine ligand having the structure represented by the formula, and Ar, R1, and R2 are as defined herein. The palladium complex may be prepared by reacting halogenated norbornene or an analog thereof with an aryl halide or an aryl sulfonate in the presence of an organic solvent and a palladium catalyst; reacting the obtained intermediate with R1R2PCl; and reacting the obtained ligand L with a palladium precursor and 2-(trimethylsilyl) ethyl-4-bromophenylmethyl ester. The palladium complex disclosed by the invention not only can be used as a catalyst for promoting a C-N coupling reaction in the synthesis of an organic compound containing a C-N structural unit, but also can reduce the dosage of the catalyst and expand the application range of efficient catalytic reaction due to the unique rigid skeleton and remarkable three-dimensional space characteristics of norcamphane molecules.

A method of condensing a lignin-derived material and converting at least a portion thereof into at least one esterified lignin derivative, the method including the steps of: providing the lignin-derived material present in a LHDO composition, wherein the lignin-derived material is selected from the group consisting of: lignin monomers; lignin depolymerization products; and combinations thereof; adjusting the LHDO composition to a pH less than 1; heating the LHDO composition for a period of time sufficient to yield a heat-treated LHDO comprising at least one condensed aromatic structure; wherein the heat-treated LHDO has a higher molecular weight average than the LHDO composition; performing an esterification reaction on the heat-treated LHDO, the esterification reaction including the steps of: providing an acidic composition having a pH of less than 1, the acidic composition including an acid selected from sulfuric acid, an alkylsulfonic acid, and an arylsulfonic acid, and an alcohol selected from the group consisting of: C1-C8 linear alcohol and C3-C8 branched alcohol and mixtures thereof; combining the heat-treated LHDO with the acidic composition into an esterification reaction mixture; and heating up the esterification mixture to a temperature ranging from 25° C. to 120° C. to convert at least some of the lignin-derived material and / or the at least one condensed aromatic structure present in the heat-treated LHDO into the at least one esterified lignin derivative.

A process for inhibiting microbial growth comprising administering a formulation comprising a pyridinium chloride compound of Formula (I), described herein, wherein R1- R6, independently comprise hydrogen, substituted or unsubstituted C1 to C24 alkyl, substituted or unsubstituted alkylaryl, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted alkenyl, substituted or unsubstituted alkynyl, sulfonate, aryl sulfonate, C1 to C24 alkyl sulfonate, taurine, carboxylate, amine, alkylamine, arylamine, alkylammonium, arylammonium, sulfonamide, halogen, hydroxy, amide, nitro, cyano, azide, O-alkyl, S-alkyl, silyl, trialkylsilyl, O-silyl, haloalkyl, alkylsulfhydryl, trifluoromethyl, hydrazide, substituted or unsubstituted aryl, heteroaryl, or heterocyclic alkynyl, carboxyalkyl, aminoalkyl, haloalkyl, azidoalkyl, amide, amino acid, or peptide; and X and Y independently comprise a heteroatom selected from oxygen, nitrogen, or sulfur, or a heterocarbyl comprising one or heteroatoms selected from oxygen, nitrogen, or sulfur.

A method for converting a lignin-derived material into at least one esterified lignin derivative, said method comprising the steps of: - providing said lignin-derived material selected from the group consisting of: lignin monomers; lignin depolymerization products; and combinations thereof; - adding a strong acid such as, sulfuric acid; - providing an amount of peroxide component in quantity sufficient to obtain up to a 1:1 mole ratio with said strong acid; - adding said peroxide component to said lignin-derived material and said strong acid to allow an oxidation reaction to take place for a pre-determined period of time sufficient to yield a composition comprising a pre-treated lignin-derived material; wherein said pre-treated lignin-derived material comprises at least one oxidized specie; - performing an esterification reaction on said composition comprising a pre-treated lignin-derived material, said esterification reaction comprising the following steps: o providing an acidic composition having a pH of less than 1, said acidic composition comprising: ▪ an acid selected from the group consisting of: sulfuric acid; an alkylsulfonic acid; and an arylsulfonic acid; and ▪ an alcohol selected from the group consisting of: C1-C8 linear alcohol and C3-C8 branched alcohol and mixtures thereof; o combining said pre-treated lignin-derived material with said acidic composition into an esterification reaction mixture; o heating up said esterification reaction mixture to a temperature ranging from 25oC to 120oC; and o allowing sufficient time for an esterification reaction to occur to yield an esterified composition comprising said at least one esterified lignin derivative; wherein said esterified composition has an average molecular weight of less than 4000, as determined by gel permeation chromatography.

Provided is a method for synthesizing a target compound (phosphoramidite) with high purity, the method being a method for producing a glycoside compound represented by General Formula (3), the method including the following step: Step A: a step of producing a glycoside compound represented by General Formula (3) by reacting a glycoside compound represented by General Formula (1) with an ether compound represented by Formula (2) in the presence of an oxidizing agent and an acid (in the following formulas, B a represents a cytosine group which can be substituted with an acyl group, or a uracil group, R 1 represents a C1 to C6 alkyl group, or a phenyl group, and n represents 0 or 1. Here, the oxidizing agent is selected from the group consisting of N-halosuccinimide and N-halohydantoin, and the acid is selected from the group consisting of perfluoroalkyl carboxylic acid and a salt thereof, alkyl sulfonic acid and a salt thereof, aryl sulfonic acid and a salt thereof, perfluoroalkyl sulfonic acid and a salt thereof, and a combination of two or more of these.

A method of condensing a lignin-derived material and converting at least a portion thereof into at least one esterified lignin derivative, said method comprising the steps of: - providing said lignin-derived material present in a LHDO composition, wherein said lignin-derived material is selected from the group consisting of: lignin monomers; lignin depolymerization products; and combinations thereof; - adjusting the LHDO composition to a pH less than 1; - heating said LHDO composition for a period of time sufficient to yield a heat-treated LHDO comprising at least one condensed aromatic structure; wherein said heat-treated LHDO has a higher molecular weight average than said LHDO composition; - performing an esterification reaction on said heat-treated LHDO, said esterification reaction comprising the following steps: o providing an acidic composition having a pH of less than 1, said acidic composition comprising: ▪ an acid selected from the group consisting of: sulfuric acid; an alkylsulfonic acid; and an arylsulfonic acid; and ▪ an alcohol selected from the group consisting of: C1-C8 linear alcohol and C3-C8 branched alcohol and mixtures thereof; o combining said heat-treated LHDO with said acidic composition into an esterification reaction mixture; o heating up said esterification mixture to a temperature ranging from 25oC to 120oC to convert at least some of said lignin-derived material and / or said at least one condensed aromatic structure present in said heat-treated LHDO into said at least one esterified lignin derivative.

A fluoroaryl sulfonic acid polymer compound which is characterized by containing repeating units represented by formula (1) and formula (2) and which, when used as a dopant material for an organic EL element or the like, forms a charge-transporting thin film having excellent hole injection properties and hole transport properties. [In the formula, ArF1 and ArF2 each independently represent a fluoroarylene group, X1 and X2 each independently represent O, S, NH, CONH or NHCO, and ArS represents an aryl group having at least one SO3R group on the ring (R represents a hydrogen atom or an alkali metal atom) (In the formula, R1 represents an alkyl group having 3-10 carbon atoms substituted with at least one fluorine atom, and R2 and R3 each independently represent a hydrogen atom or a methyl group. ]