563results about How to "Reaction raw materials are readily available" patented technology

The invention discloses an adsorbing material prepared from waste straws and capable of adsorbing trivalent arsenic from water as well as a preparation method and an application thereof, and belongs to the field of synthesis and application of environment functional materials. The adsorbing material is prepared by using the waste straws as matrixes through one-step quaternary ammoniated reaction. The preparation method is simple and the sources of the raw materials are wide; the prepared adsorbing material is capable of effectively adsorbing and removing the trivalent arsenic out of water; after adsorption, the trivalent arsenic in the adsorbing material can be desorbed by using a sodium chloride or sodium hydroxide solution; and the adsorbing material regenerated after desorption has stable arsenic adsorption property. The adsorbing material prepared by the method is an effective way of the resource utilization of the waste straws in farmlands.

The invention discloses a new chemical synthesizing method of yipisidin, which comprises the following steps: ammonifying 6-chloromethyl-11-dihyrogen-dibenz [b,e] aza to generate 6-aminomethyl-11-dihydrogen-dibenz [b,e] aza; reducing the 6-aminomethyl-11-dihydrogen-dibenz [b,e] aza into 6-aminomethyl-6,11-dihydrogen-5H-dibenz [b,e] aza; generating the product through cyanogen bromide to loop. The invention simplifies the making method with little by-product, which improves the receiving rate by 69% with high purity (HPLC. 99. 0%) for industrial manufacturing.

The invention relates to a preparation method of vinyl sulfate. The preparation method comprises the following steps: adding ethylene glycol into a reaction kettle A filled with a halohydrocarbon solvent, uniformly stirring, dropwise adding thionyl chloride to carry out a substitution reaction, removing hydrogen chloride by reduced-pressure distillation, then, washing a reaction solution to be neutral by using a saturated sodium bicarbonate solution, standing still, and skimming to obtain a glycol sulfite halohydrocarbon solution; adding the glycol sulfite halohydrocarbon solution into a reaction kettle B, adding monopotassium phosphate or sodium tungstate as a catalyst, regulating the pH by using a sodium bicarbonate aqueous solution, and adding a sodium hypochlorite aqueous solution to carry out an oxidation reaction; at the end of the reaction, skimming to obtain a vinyl sulfate halogenated alkane solution, carrying out concentration, then, adding n-hexane to carry out recrystallization, and carrying out filtration to obtain high-purity vinyl sulfate. By using the preparation method, raw materials are available, the price of the catalyst is low, the product is easy to purify, and the obtained product is low in acidity, low in water content, high in purity and suitable for large-scale production.

The invention relates to a method for preparing a molybdenum disulfide/graphene alternate intercalation structure material. The method includes the following steps that a moderate molybdenum source and a moderate sulfur source are dissolved in water respectively, and are fully stirred to obtain even solutions; a surfactant is added into the sulfur source, then the obtained molybdenum-source solution is slowly dropped into a solution formed by the sulfur source and the surfactant, a uniform solution or colloid is formed, the uniform solution or colloid is heated to 100 DEG C to 300 DEG C at thepressure of 10 MPa to 300 MPa, and is reacted for 3 hours to 48 hours at the constant temperature, and after the reaction is end, a reaction system is naturally cooled to be the indoor temperature, and pressure is released; the obtained powder is washed, dried and calcined, and the molybdenum disulfide/graphene alternate intercalation structure material is obtained. The method is simple in preparing process and environmentally friendly, an intercalation structure of molybdenum disulfide and graphene can be obtained, the interlayer spacing of the molybdenum disulfide is amplified accordingly,and the method has the important application value in the research aspects of a high-efficiency photocatalyst and a new energy material.

The invention discloses a double-metal co-doped carbon nano-composite material and a preparation method thereof. The composite material is prepared from a carbon substrate and ferrocene-phenylalanine and transition metal except iron, which are co-assembled on the carbon substrate through a non-covalent bond, wherein the ferrocene-phenylalanine, the transition metal except the iron and the carbon substrate commonly form a raspberry-like nanosphere structure. The invention further discloses a double-metal-nitrogen-carbon nano-catalyst obtained by mixing the composite material with dicyanodiamide and carbonizing and further provides application of the double-metal-nitrogen-carbon nano-catalyst to catalytic oxygen reduction reaction. The preparation methods of the composite material and the catalyst have simple steps and low cost and are suitable for large-scale application. The double-metal-nitrogen-carbon nano-catalyst provided by the invention has excellent electrochemical performance and has good methanol toxin resistance and stability, so that the double-metal-nitrogen-carbon nano-catalyst has a good application prospect in the field of the catalytic oxygen reduction reaction.

The invention provides a synthetic method of a hindered phenol/hindered amine intramolecular compound anti-oxidant, comprising the following steps of: dissolving a compound I in a solvent A, adding thionyl chloride, performing substitution reaction, carrying out underpressure distillation to remove the solvent A and unreacted thionyl chloride so as to obtain a compound II, respectively dissolvingthe compound II and a compound III by the use of a solvent B, mixing, performing amidation reaction, adding an acid binding agent, continuously reacting, filtering after the reaction, washing, and carrying out vacuum drying to obtain the hindered phenol/hindered amine intramolecular compound anti-oxidant. According to the invention, the reaction raw materials are easily available, the method is simple, and the yield is high. As the product molecule contains hindered phenol antioxidation group and hindered amine light stabilizer function group, oxidation resistance of a polymer is raised.

The invention belongs to the technical field of organic chemistry, and particularly relates to a method for preparing a 3-sulfonyl coumarin compound. According to the method, arenediazonium salt, phenyl ester phenylpropiolate and DABCO.(SO2)2 react in an organic solvent to prepare the 3-sulfonyl coumarin compound. The structure of the compound is represented through the 1 H NMR, 13 C NMR, HRMS and single crystal x-ray diffraction analysis methods and determined. According to the method, under very mild and simple conditions, DABCO.(SO2)2 serves as a sulfur dioxide source, sulfur acylation reaction is achieved directly, and the 3-sulfonyl coumarin compound is built. Raw materials in the reaction are easy to obtain, cost is low, use of a sulfonyl chloride intermediate in a traditional synthesis method is avoided, and the method can be suitable for large-scale preparation and has very good application prospects.

The invention relates to a method for synthesizing isothiocyanate, belonging to the field of organic chemical industry. The method comprises the following steps: (1) synthesizing the isothiocyanate from a carbon sulfide reagent and primary amine used as raw materials, adding an alkali reagent used as the catalyst and the acid binding agent, and adding a solvent at the same time, wherein the organic reaction temperature is controlled at 300 DEG C below zero to 1,200 DEG C above zero, the reaction lasts for 1-30 hours, the molar ratio of the substituted phenoxy sulfuryl chloride to the alkyl primary amine is 1-3:1, and the molar ratio of the alkali reagent to the alkyl primary amine is 1-10:1; and (2) adding water and dichloromethane solution at the volume ratio of 2:3, extracting and separating organic phases, extracting the water phases by using dichloromethane, merging the organic phases, washing by using saturated salt water, drying by using nhydrous sodium sulfate, and separating by adopting chromatography to obtain the isothiocyanate. The method for synthesizing the isothiocyanate has the advantages of readily available reaction materials, low toxicity, mild reaction condition, short reaction time and convenience of separation and purification, thereby having high application value.

The invention discloses a polyphenyltriazole formate, and a preparation method and application thereof. A phenylpropargylic acid dibasic ester monomer and a dibasic organic azido monomer used as raw materials are subjected to polymerization reaction in a polar aprotic solvent to obtain the polyphenyltriazole formate. The preparation method has the advantages of accessible reaction raw materials and no byproduct generation in the polymerization reaction process, and conforms to the atom economy. The polymerization reaction has wide substrate applicability and favorable functional group compatibility, and is convenient for introducing multiple functional groups. The polymerization reaction does not use any metal catalyst, and thus, can eliminate the influence of catalyst residues on the biological and photoelectric properties of the polymer material. The polyphenyltriazole formate has the advantages of favorable processability, higher heat stability, higher degradability and higher aggregation-induced luminescence, and has potential application values in the aspects of optical plastics, biomedical materials, fluorescence detection and the like.

The invention discloses a chiral vicinal diamine compound and a method for preparing the same.The method includes catalyzing organic amine and substituted racemic or meso N-sulfonyl ethylene imine under by the aid of a catalyst system with univalent silver salt and chiral diphosphine ligands at the temperatures of 15-40 DEG C to carry out asymmetric ring-opening reaction so as to synthesize the chiral vicinal diamine compound.The chiral vicinal diamine compound and the method have the advantages that the chiral vicinal diamine compound can be prepared in a catalytic asymmetric ring-opening mode, the method is applicable to the racemic or meso N-Ts ethylene imine, reaction raw materials are simple and are easily available, reaction conditions are mild, products are abundant in structure types, and the chiral vicinal diamine and the method are high in yield and stereoscopic selectivity.

The invention relates to a preparation method of carbazochrome sodium sulfonate, belonging to the technical field of preparation of vascular hemostatics. The method comprises the following steps: raw materials dissolution and reaction: putting purified water, carbazochrome, sodium bisulfite and ascorbic acid into a reaction tank, heating while stirring until the solid substances are completely dissolved, and continuing keeping the temperature to react, thereby obtaining a reaction solution; decolorization and separation: adding a decolorant into the reaction solution, keeping the temperature while stirring for decolorization, after finishing decolorization, carrying out centrifugal filtration, washing residues with purified water, carrying out centrifugal drying, and merging the centrifugal filtrates to obtain a solution to be crystallized; crystallization: regulating the pH value of the solution to be crystallized with an alkaline matter, freezing to cooling, and standing to precipitate crystals; and refinement: carrying out centrifugal filtration on the crystals, washing, carrying out centrifugal drying, and drying in a vacuum drying oven to obtain the carbazochrome sodium sulfonate. The invention has the advantages of accessible reaction raw material, short reaction steps, mild reaction conditions, high reaction yield (up to more than 90%), better reaction product quality and high purity (up to more than 99%), and is convenient and simple to operate.

The invention relates to a method preparing an epinastine hydrochloride intermediate and epinastine hydrochloride. The method comprises the following steps: reacting 6-chloromethyl-11-dihydro-dibenzo[b,e]azepine and an amino reagent under protection to generate an amino-protective compound; carrying out reduction reaction and deprotection reaction to generate 6-aminomethyl-6,11-dihydro-dibenzo[b,e]azepine; and finally, carrying out cyanogen bromide cyclization on the 6-aminomethyl-6,11-dihydro-dibenzo[b,e]azepine, neutralizing with alkali, and reacting with hydrochloric acid to generate the epinastine hydrochloride. The preparation method has the advantages of accessible reaction raw materials, fewer byproducts and high product purity, and is suitable for industrial production.

The invention discloses a method for preparing flake alpha-Al2O3 granular powder. The method comprises the following steps: preparing water solution by inorganic salt solution of aluminum, then adding proper amount of alkali into the water solution to make the pH value of a system more than 6, filtering, washing and drying the aluminum hydroxide, grinding the aluminum hydroxide into fine powder, adding potassium sulphate into the ground fine powder, or adding the fine powder into potassium sulphate water solution according to a molar ratio of the potassium sulphate to the aluminum hydroxide of 5 to 15, calcining the mixed powder for 2 to 5 hours at the temperature of between 850 and 1,050 DEG C, washing a calcined product by water to remove the potassium sulphate, and drying the product.

The invention discloses a synthesis method of polysubstituted sulfur-containing or selenium-containing benzo[c,d]indole compounds. Firstly, 8-alkynylnaphthylamine compounds, thioether (diselenide), acatalyst and an additive are placed in a reactor, a solvent is added to the reactor until 8-alkynylnaphthylamine compounds and thioether (diselenide) are completely dissolved, then, the mixture is heated to react, after the reaction, aftertreatment is performed, and the polysubstituted sulfur-containing or selenium-containing benzo[c,d]indole compounds are obtained. The polysubstituted sulfur-containing or selenium-containing benzo[c,d]indole compounds are synthesized with a one-pot one-step method, the reaction operation is simple, intermediate separation and purification processes are reduced, the reaction condition is mild, the reaction selectivity is good, the yield is high, the substrate universality is wide, the reaction materials are simple and easy to obtain, the production cost islow, and the method is applicable to large-scale industrial production as well as small-scale laboratory preparation.

The preparation process of deoxy fructosazine features that the self condensation reaction of aminoglucose or its salt as reaction material in the presence of boric acid or borate as catalyst, the nanofiltering film separating technology to separate the side product and intercept the target product deoxy fructosazine, and the concentration and re-crystallization of the intercepted product liquid to obtain the target product deoxy fructosazine. Compared with available technology, the present invention has the advantages of simple technological process, convenient operation, short reaction period, low power consumption and high deoxy fructosazine yield up to 55-60 %, and the features of homogeneous reaction, low reaction temperature, no toxicity, low cost and high conversion rate, and may be used in industrial production.