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60 results about "Acetylferrocene" patented technology
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Acetylferrocene is the organoiron compound with the formula (C₅H₅)Fe(C₅H₄COMe). It consists of ferrocene substituted by an acetyl group on one of the cyclopentadienyl rings. It is an orange, air-stable solid that is soluble in organic solvents.
Preparation method of acetyl cyclopentadienyl iron
The present invention discloses a method for preparing acetylferrocene. Said method includes the following steps: using ferrocene as raw material, making said ferrocene and solution formed from acetylation reagent and binary catalyst produce reaction in haloolefin reaction solvent so as to obtain the invented target product whose purity can be up to above 98% and yield is 89-92%.
Owner:SHANGHAI CHEM REAGENT RES INST
Ferrocenyl containing oxadiazolyl Mannich bases and preparation method thereof
The invention provides ferrocenyl containing oxadiazolyl Mannich bases and a preparation method thereof; the preparation method comprises: adding A mol of substituent-containing amino-oxadiazole, B mol of an aldehyde compound, an acidic catalyst and the solvent absolute ethyl alcohol into a dry three-neck flask with a reflux condensing tube, adding absolute ethyl alcohol solution of acetylferrocene with C mol of a solute, heating and refluxing until full reaction for 10-14 h, wherein the ratio of A, B and C is (0.7-1):(5-30):1, depressurizing and evaporating to remove the solvent after reaction, and separating via silica gel column chromatography to obtain the ferrocenyl containing oxadiazolyl Mannich bases. The preparation method is simple to perform, the reaction conditions are mild, equipment requirements are low, the purity of the bases is high, and the catalyst used herein is low in price and easy to obtain. The serial novel-structure ferrocenyl containing oxadiazolyl Mannich bases are prepared herein, and beneficial assistance is provided for the development and application of these compounds.
Owner:SHAANXI UNIV OF SCI & TECH
3-[4-(2-amino-5-substituted-[1,3,4]thiadiazolyl)-phenyl]-1-ferrocenyl-acrylketone and preparation method thereof
The invention provides a 3-[4-(2-amino-5-substituted-[1,3,4]thiadiazolyl)-phenyl]-1-ferrocenyl-acrylketone and a preparation method thereof. The structural formula is disclosed in the specification. The preparation method comprises the following steps: adding acetylferrocene, 4-(2-amino-5-substituted-[1,3,4]thiadiazolyl)-benzaldehyde, catalyst and anhydrous ethanol into a flask with a reflux condensation tube, putting the flask into microwave oven, carrying out microwave radiation until the reaction is completed, extracting the reaction product with acetone, and removing the acetone to obtain the target product. The method for synthesizing the target product by the microwave process has the advantages of high reaction sensitivity, high heating rate, short reaction time, high heat utilization efficiency, energy saving, no pollution and the like; and the obtained product has the advantages of high purity and high yield (up to 91% above).
![3-[4-(2-amino-5-substituted-[1,3,4]thiadiazolyl)-phenyl]-1-ferrocenyl-acrylketone and preparation method thereof](https://images-eureka-patsnap-com.libproxy1.nus.edu.sg/patent_img/062fbd6c-9d45-4561-95a9-630d39e71743/BDA0000528179380000021.PNG "3-[4-(2-amino-5-substituted-[1,3,4]thiadiazolyl)-phenyl]-1-ferrocenyl-acrylketone and preparation method thereof")
![3-[4-(2-amino-5-substituted-[1,3,4]thiadiazolyl)-phenyl]-1-ferrocenyl-acrylketone and preparation method thereof](https://images-eureka-patsnap-com.libproxy1.nus.edu.sg/patent_img/062fbd6c-9d45-4561-95a9-630d39e71743/BDA0000528179380000051.PNG "3-[4-(2-amino-5-substituted-[1,3,4]thiadiazolyl)-phenyl]-1-ferrocenyl-acrylketone and preparation method thereof")
![3-[4-(2-amino-5-substituted-[1,3,4]thiadiazolyl)-phenyl]-1-ferrocenyl-acrylketone and preparation method thereof](https://images-eureka-patsnap-com.libproxy1.nus.edu.sg/patent_img/062fbd6c-9d45-4561-95a9-630d39e71743/BDA0000528179380000061.PNG "3-[4-(2-amino-5-substituted-[1,3,4]thiadiazolyl)-phenyl]-1-ferrocenyl-acrylketone and preparation method thereof")
Owner:SHAANXI UNIV OF SCI & TECH
Alkali-corrosion-resistant organic magnetic material and preparation method thereof
InactiveCN105670286AImprove magnetismImprove corrosion resistanceOrganic/organic-metallic materials magnetismSuccinic acidStearic acid
The invention discloses an alkali-corrosion-resistant organic magnetic material.The alkali-corrosion-resistant organic magnetic material is prepared from, by weight, 15-25 parts of acetylferrocene, 3-10 parts of ferrous lactate, 5-10 parts of cupric tartrate trihydrate, 2-6 parts of copper disodium EDTA, 10-13 parts of ABS resin, 2-5 parts of ferric stearate, 9-15 parts of 4-cyclohexyl resin, 12-16 parts of polyimide resin, 10-20 parts of 2, 4-symplectic dialdehyde, 6-10 parts of 2-acetylthiophene ethylene acetal, 5-9 parts of 1-(2-pyridine azo)-2-naphthol, 4-8 parts of dinonyl phthalate and 6-12 parts of ethyl 9-fluorenylideneacetate.The organic magnetic material has good alkali resistance, and operation safety is improved.
Owner:SUZHOU KEMAO ELECTRONICS MATERIALS TECH
Process for preparing (S)-1-ferrocene ethyl dimethylamine
ActiveCN108409802AMild reaction conditionsRaw materials are easy to getOrganic-compounds/hydrides/coordination-complexes catalystsMetallocenesAcetylferroceneCoordination complex
The invention discloses a process for preparing (S)-1-ferrocene ethyl dimethylamine. In the preparation process, acetylferrocene is used as a raw material, and a complex obtained by reacting a metal Ir complex with a chiral ferrocene tridentate ligand L* is used as a catalyst, (S)-1-ferrocenyl ethanol is prepared by asymmetric catalytic hydrogenation, and the(S)-1-ferrocene ethyl dimethylamine isprepared by acetylation and dimethylamine substitution reaction. Compared with a traditional chiral separation method for preparing the (S)-1-ferrocene ethyl dimethylamine, the process has main beneficial effects of mild reaction conditions, simple operation, good stereoselectivity, high yield, short production cycle, small amount of "three wastes", easy industrialization, and large implementationvalue and social and economic benefits.
Owner:江苏信和生物医药有限公司
2-ferrocenyl-arylquinoline and preparation method thereof
The invention discloses 2-ferrocenyl-arylquinoline which has the general formula shown in the specification, wherein Aryl is the aryl and is connected to the position 5, 6, 7 or 8 of quinoline. A preparation method of 2-ferrocenyl-arylquinoline comprises the following steps: adding acetylferrocene, bromo-o-hydroxyl methyl aniline, Aryl-B(OH)2, [Ir(cod)Cl]2, palladium salt, triphenylphosphine and alkali into the organic solvent, heating and refluxing for reacting under inert gas shielding, and separating and purifying to obtain the product after the reaction is ended. The provided 2-ferrocenyl-arylquinoline compound has the dual characteristics of ferrocene and arylquinoline and can be applied to the fields of electrochemistry, biochemistry, materials chemistry and organocatalysis.
Owner:LUOYANG NORMAL UNIV
Preparation method of alpha-bromoacetyl ferrocene
The invention discloses a preparation method of alpha-bromoacetyl ferrocene. The method comprises the following steps: by using acetyl ferrocene and N-bromo succinimide as a reaction raw material, adding a solvent to uniformly mix; radiating by microwave; stirring; evaporating the solvent after reaction; washing by hot water; and filtering and drying to obtain red brown particle solids to obtain the target product alpha-bromoacetyl ferrocene. The preparation method disclosed by the invention under microwave radiation assisted condition is quick to react, simple and convenient to operate, simple in post-treatment, high in yield and easy to implement, and alpha-bromoacetyl ferrocene can be efficiently and quickly synthesized. The defect that the original alpha-bromoacetyl ferrocene process is severe in reaction condition and the raw materials are not easy to get is overcome.
Owner:SHAANXI UNIV OF SCI & TECH
Completely-biodegradable agricultural mulching film
The invention relates to the technical field of mulching film production, and concretely relates to a completely-biodegradable agricultural mulching film. The completely-biodegradable agricultural mulching film comprises, by weight, 50-70 parts of a poly(3-hydroxybutyrate) and polyhydroxyvalerate copolymer, 10-15 parts of polybutylene succinate, 0.5-2 parts of acetylferrocene, 1-3 parts of a polymeric hindered amine light stabilizer, 0.5-3 parts of 2-(2'-hydroxy-5'-methylphenyl)benzotriazol, 5-8 parts of bentonite and 4-8 parts of carboxymethylcellulose sodium. The agricultural mulching film can be completely degraded, and has the advantages of good mechanical stress resistance, good wet resistance, environmental protection and no pollution.
Owner:张茗岩
Preparation process for chiral (R)-1-ferrocenyl ethyl dimethylamine
The invention belongs to the technical field of organic synthesis and discloses a preparation process for chiral (R)-1-ferrocenyl ethyl dimethylamine. According to the preparation process, acetylferrocene is used as a raw material and is asymmetrically reduced to obtain R-architectonic ferrocenyl ethanol; then optically-pure (R)-1-ferrocenyl ethyl dimethylamine is obtained by an esterification and amination one-pot method. The method does not need resolution so that the synthesis yield of the (R)-1-ferrocenyl ethyl dimethylamine is greatly improved; the preparation process has the characteristics of moderate reaction conditions, high optical purity and the like; the synthesis yield of a ferrocene diphosphine ligand which takes the (R)-1-ferrocenyl ethyl dimethylamine as a key intermediate is improved; te production cost is reduced and the preparation process is suitable for industrial production.
Owner:ZHEJIANG ZHONGSHAN CHEM IND GRP
4-(substituted phenyl)-6-ferrocenyl-3,4-dihydropyrimidine-2(1H)-one and preparation method thereof
ActiveCN108191919ADoes not affect productivityAccurate monitoringAntibacterial agentsMetallocenesFiltrationKetone
The invention discloses 4-(substituted phenyl)-6-ferrocenyl-3,4-dihydropyrimidine-2(1H)-one and a preparation method thereof. The method comprises the following steps: adding A (mmol acetylferrocene),B (mmol nitrogen source), C (mmol aromatic aldehyde), D (mmol boracic acid) and E (mL acetic acid) into a three-necked flask, wherein a ratio of A to B to C to D is 1 to (1.1 to 1.2) to (1.1 to 1.2)to 0.74, and a ratio of A to E is 1 to (9 to 12); performing reaction at 100 DEG C until the raw materials are completely subjected to reaction; pouring a reaction mixed solution into water and separating solids out; performing suction filtration and water washing on the solids; naturally airing the solids; performing recrystallization through absolute ethyl alcohol to obtain a 4-(substituted phenyl)-6-ferrocenyl-3,4-dihydropyrimidine-2(1H)-one pure product. The invention discloses a series of novel unreported compounds and the preparation method thereof.
Owner:SHAANXI UNIV OF SCI & TECH
Preparation method of ferrocenecarboxylic acid
Owner:启东市三江建筑机械有限公司
Production method of ethylferrocene
InactiveCN104945445AIncrease polarityAvoiding Incomplete Response ProblemsMetallocenesFiltrationAlloy
Belonging to the technical field of ethylferrocene synthesis, the invention relates to a production method of ethylferrocene. The method includes: taking ferrocene as the raw material, in the presence of a dispersing agent and a catalyst, subjecting the raw material and an acylating agent to acylation reaction to obtain acetylferrocene, and carrying out reduction reaction on the acetylferrocene and a reduction agent zinc tin alloy to obtain ethylferrocene. The method provided by the invention adopts an inert organic solvent as the dispersing agent and takes non-toxic zinc tin alloy as the reducing agent, so that the incomplete reaction problem caused by nonuniform reaction system can be avoided, at the same time the neutralization, filtration and drying steps are omitted, and pollution brought about by existing reduction agent zinc tin alloy waste liquid is completely eradicated, the treatment becomes simpler, and the yield is enhanced. According to the method, the yield of ethylferrocene is up to over 87.5%, and the content reaches over 99%.
Owner:JIAXING ZHENGDA CHEM
Antiknock clean solvent used for motor gasoline
InactiveCN105838459APrevent decomposition and condensationPromote complete combustionLiquid carbonaceous fuelsFuel additivesEthyl acetateSolvent
The invention discloses an antiknock clean solvent used for motor gasoline. The antiknock clean solvent includes a clean dispersant, a combustion improver, an antiknock agent, a polar solvent and an inert solvent, wherein the clean dispersant comprises 10-20wt% of a petroleum sulfonate agent, 5-8wt% of succinate and 8-12wt% of salicylate; the combustion improver is 5-8wt% of benzyl alcohol ; the antiknock agent is 5-8wt% of methyl tert-butyl ether; the polar solvent is 25-35wt% of trifluoroacetic acid or acetylferrocene; and the inert solvent is obtained through mixing fatty oil, liquid paraffin, ethyl acetate and isopropyl myristate. The antiknock clean solvent allows gasoline components and even gasoline components not according with national relevant regulation to be processed in order to produce qualified 93# or above gasoline, so some resources which cannot be used are changed into valuables and become national effective energy.
Owner:CHENGDU TIANFENG CLEANING ENERGY DEV CO LTD
1,1-diacetylferrocene chiral poly-schiff base salt/graphene composite wave absorbing material
ActiveCN108165008AHigh specific gravityLight weightOther chemical processesConductive polymer compositeParaffin oils
The invention relates to a 1,1-diacetylferrocene chiral poly-schiff base salt / graphene composite wave absorbing material. The 1,1-diacetylferrocene chiral poly-schiff base salt / graphene composite waveabsorbing material is a chiral conductive polymer composite material. The material is prepared by compounding the chiral 1,1-diacetylferrocene chiral poly-schiff base salt with the graphene and thenadding a paraffin matrix. The composite material has the advantages of simple and convenient preparation process and low density; in addition, by combining the preparation process with chiral characteristic of the composite material, the composite material has strong practical value in electromagnetic wave absorbing materials, electromagnetic shielding, electromagnetic radiation protection and thelike.
Owner:NANCHANG HANGKONG UNIVERSITY
Ferrocenyl-containing thiadiazolyl Schiff base and preparation method thereof
A mol of choline chloride and B mol of methanesulfonic acid are added into a dry three-necked flask, stirring is executed at room temperature to obtain a eutectic solvent, and then C mol of acetylferrocene and D mol of 2-amino-5-substituted-1,3,4-thiadiazole are added, reaction is executed in a water bath of 40 DEG C, and TLC monitoring is executed until the reaction is completed; after the reaction is completed, the reaction liquid is poured into water, extraction is executed with dichloromethane, the solvent is evaporated to obtain a crude product, and a water phase is recovered to obtain the eutectic solvent again; the crude product is recrystallized by absolute ethyl alcohol to obtain the pure ferrocenyl-containing thiadiazolyl Schiff base. The method is simple in operation, high in yield, high in product purity, short in reaction time and simple in post-treatment, the eutectic solvent is recyclable, environmentally friendly and low in cost, and the method has the important significance in synthesis and development of the compounds.
Owner:SHAANXI UNIV OF SCI & TECH
Preparation method for Mannich base containing ferrocenyl thiadiazole or oxadiazole
InactiveCN110759955ASimple and fast operationSimple post-processingOrganic-compounds/hydrides/coordination-complexes catalystsChemical recyclingPtru catalystDistillation
The invention provides a preparation method for a Mannich base containing ferrocenyl thiadiazole or oxadiazole. The method comprises the following steps: sequentially adding A mol of 2-amino-5-substituted-1,3,4-thia(oxa)diazole, B mol of an aldehyde and absolute ethanol into a dry three-necked flask, and performing uniform stirring; and adding C mol of a benzothiazole ionic liquid, slowly adding Dmol of an acetylferrocene anhydrous ethanol solution dropwise under stirring, after addition is completed, performing a reflux reaction under heating until the reaction is completed, performing reduced-pressure distillation to remove a solvent, adding ethyl acetate into residues, performing suction filtration, performing evaporation on the filtrate to dryness to obtain a crude product, and performing recrystallization on the crude product by using anhydrous ethanol to obtain the Mannich base containing the ferrocenyl thiadiazole or oxadiazole, wherein the filter cake is a benzothiazole ionicliquid and can be recycled and reused, and the ratio of the A to the B to the C to the D is 1:(5-10):(0.5-1.5):1. The method provided by the invention is environmentally friendly, and simple and convenient to operate, and has simple after-treatment, a high yield, and high efficiency, the catalyst can be recycled for multiple times, and the reaction costs are low.
Owner:SHAANXI UNIV OF SCI & TECH
Method for synthesizing 1-ferrocenylethanol
The invention discloses a method for synthesizing 1-ferrocenylethanol, and relates to the technical field of technical material production. The method comprises the following steps of mixing an aqueous solution of methanol and acetyl ferrocene while stirring under the condition of reaction system temperature of -5 to 5 DEG C, putting sodium borohydride in batches for reaction, adding an aqueous solution of ammonium chloride to damage excessive sodium borohydride to prevent explosion during desolventizing after the reaction is finished, and performing desolventizing and concentration; and adding a solvent for extraction, adding water for demixing, and desolventizing an organic layer to obtain the 1-ferrocenylethanol. According to the synthesis method, ethanol is replaced by the aqueous solution of methanol in a fixed proportion, so that the reaction speed is increased, difficulty in the reaction is lowered, the reduction product content is increased to about 93 percent, the yield is increased to about 97 percent, the discharge of wastewater and the loss of the solvent during reaction are reduced, the energy consumption is lowered, the production cost is lowered, and the discharge of the wastewater is greatly reduced.
Owner:JIANGSU CHANGQING AGROCHEMICAL CO LTD
Water purifying material prepared from waste straw and preparation method thereof
InactiveCN105727900AEfficient degradationSimple preparation processOther chemical processesWater contaminantsCelluloseSilicic acid
Owner:SUZHOU SHENGPULA NEW MATERIAL SCI & TECH
Preparation method of ferrocenecarboxylic acid
Owner:启东市三江建筑机械有限公司
3-(4-carbazole-9-yl-phenyl)-1-ferrocenyl-acetone and preparing method thereof
The invention provides 3-(4-carbazole-9-yl-phenyl)-1-ferrocenyl-acetone and a preparing method thereof. Acetyl ferrocene, 4-carbazole-9-yl-benzaldehyde, NaOH and K2CO3 are added into a dry reaction vessel, ground uniformly and subjected to a heat preserving reaction, and a product is treated to obtain the 3-(4-carbazole-9-yl-phenyl)-1-ferrocenyl-acetone. According to the method, acetyl ferrocene and 4-carbazole-9-yl-benzaldehyde are used as raw materials, NaOH and K2CO3 are used as catalysts, and a solid-phase solvent-free method is adopted for preparing the 3-(4-carbazole-9-yl-phenyl)-1-ferrocenyl-acetone; according to the method, reaction time is short, solvent is not needed, the operation process is simple, the reaction condition is mild, the requirement for equipment is low, post-treatment is simple, reaction is complete, the yield reaches over 97%, and the prepared 3-(4-carbazole-9-yl-phenyl)-1-ferrocenyl-acetone has a good antibacterial effect.
Owner:SHAANXI UNIV OF SCI & TECH
AFc/CB/PVB modified electrode preparation and method for determining free state sulfite and amount by electrode
InactiveCN104297304AEasy to updateGood reproducibilityMaterial electrochemical variablesPolyvinyl butyralAlcohol
The invention discloses an AFc / CB / PVB modified electrode, which comprises a glassy carbon electrode and a modification layer fixed on the surface of the glassy carbon electrode; and the modification layer comprises a polyvinyl butyral membrane containing powdered carbon and acetylferrocene absorbed on the surface of the polyvinyl butyral membrane. The invention also discloses a method of the AFc / CB / PVB modified electrode, which comprises the following steps: dispersing acetylferrocene, powdered carbon and polyvinyl butyral resin in absolute ethyl alcohol to prepare a mixed liquor containing AFc / CB / PVB modified substrate, then polishing the glassy carbon electrode, adding the mixed liquor containing AFc / CB / PVB modified substrate drop by drop on the surface of the pretreated glassy carbon electrode, and then naturally drying to obtain the AFc / CB / PVB modified electrode. The invention also discloses a method for detecting sulfite by the AFc / CB / PVB modified electrode, and comprises an application for determining free state sulfite and amount. The method has the advantages of strong anti-interference capability, good stability and high sensitivity.
Owner:ZHEJIANG GONGSHANG UNIVERSITY
Method for preparing 3-methyl-1,3-ferrocenyl propylene-1-one
ActiveCN103450284ASimple and fast operationReaction is easy to controlMetallocenesAfter treatmentKetone
The invention provides a method for preparing 3-methyl-1,3-ferrocenyl propylene-1-one. The method comprises the following steps: adding A mmol acetyl ferrocene, B mmol alkali and C mmol K2CO3 into a reaction vessel according to the ratio of A, B and C of 2: (1.5-3.5): (0-3.5), grinding for 10-30 minutes, and then, standing, so as to obtain a mixture; adding water into the mixture to uniformly disperse the mixture, then, carrying out suction filtration, and washing and drying a filter cake, thereby obtaining 3-methyl-1,3-ferrocenyl propylene-1-one. According to the method, a target product is prepared by adopting a grinding method, acetyl ferrocene serves as a raw material, K2CO3 and the alkali serve as a catalyst or the alkali serves as the catalyst alone, the reaction is carried out without solvents, the operation is simple and convenient, the reaction is easy to control, the reaction time is short, the requirements on equipment are low, the after-treatment is simple, and the yield is high.
Owner:SHAANXI UNIV OF SCI & TECH
Fuel oil additive and preparation method thereof
InactiveCN108998117AImprove performanceImprove fuel efficiencyLiquid carbonaceous fuelsFuel additivesBenzeneOil additive
The invention discloses a fuel oil additive. The fuel oil additive is prepared from raw materials in a weight ratio as follows: 0.008%-1% of ferrocene, 0.01%-1.8% of diacetyl ferrocene, 3%-8% of tertiary amyl methyl ether, 2%-10% of methyl tertiary butyl ether, 0.001%-0.005% of methylcyclopentadienyl manganese tricarbonyl, 3%-15% of tert butyl alcohol, 3%-7% of alkyl benzene and the balance of gasoline. The maximum utility of fuel oil can be played, the utilization rate of the fuel oil is increased, vehicle performance can be improved to a certain degree, more fuel oil is saved, tail gas is purified, and pollution is reduced.
Owner:重庆市涪陵赵氏化工建材有限公司
Preparation method of ethyl dicyclopentadienyl iron
The present invention discloses a preparation method of ethyl ferrocene. Said method includes the following steps: using acetylferrocene as raw material, using borohydride as reducing agent, using haloolefin as solvent, in the presence of Brnsted acid making them produce reduction reaction, using alkaline solution to regulate pH value so as to obtain the invented target product whose purity is upto above 99% and yield is 87-92%.
Owner:SHANGHAI CHEM REAGENT RES INST
Synthetic method of intermediate diacetyl ferrocene
ActiveCN111377980AIncrease productivityLow selectivityProductsMolecular sieve catalystsAcetic anhydrideSilicic acid
The invention discloses a synthesis method of an intermediate diacetyl ferrocene, which comprises the following steps: taking ferrocene, acetic anhydride, trichloromethane, AlCl3, aluminum isopropoxide, tetraethylammonium hydroxide and tetraethoxysilane as main raw materials, wherein proportions of the following raw materials are: ferrocene and acetic anhydride in a mass ratio of 4: 5; the molar ratio of SiO2 to Al2O3 is 60: 1; the mass ratio of Al-MCM-41 to AlCl3 is 7: 2; according to the synthesis process, a low-temperature supercritical fluid process is adopted to catalyze an acylation reaction of ferrocene and acetic anhydride to prepare high-purity diacetyl ferrocene. And under the shape-selective catalysis of A1-MCM-41, the selectivity and the yield of the product can be greatly improved, so that the production efficiency of the intermediate is improved.
Owner:徐州邦博信息科技有限公司
Acetyl ferrocene synthesis method
InactiveCN107488200ASynthetic reaction conditions are mildEasy temperature controlMetallocenesTemperature controlAcetic anhydride
The invention discloses an acetyl ferrocene synthesis method, which comprises: (1) mixing acetic anhydride and phosphoric acid, and stirring for 10-15 min at a room temperature; (2) adding a ferrocene solid, heating to a temperature of 35-40 DEG C, and carrying out thermal insulation; (3) heating to a temperature of 45-50 DEG C, and carrying out a reaction until the ferrocene completely reacts; (4) rapidly pouring the reaction solution into crushed ice, adjusting the pH value to 6-7, and filtering to obtain an acetyl ferrocene crude product; and (5) re-crystallizing to obtain the acetyl ferrocene pure product. According to the present invention, the synthesis method has advantages of mild synthesis reaction conditions, easy temperature control, and high yield.
Owner:苏州天允金属材料有限公司
Synthesis method of intermediate bis(carboxylcyclopentadiene)iron
InactiveCN111377979AGood dispersionHigh selectivityOrganic-compounds/hydrides/coordination-complexes catalystsMetallocenesCarboxyl radicalCatalytic oxidation
The invention discloses a synthesis method of bis(carboxylcyclopentadiene)iron, which comprises the following steps: 1,1'-diacetyl ferrocene, cuprous chloride, N-methylimidazole, toluene, butane, brominated 1-amyl-methylimidazole and concentrated sulfuric acid are used as main raw materials; according to the synthesis process disclosed by the invention, self-made [C5mim]HSO4 ionic liquid is used as a reaction solvent, so that the bis(carboxylcyclopentadiene)iron is prepared through catalysis of a uniformly dispersed oxidation system formed by CuCl and an ionic liquid, and therefore, catalyticoxidation of diacetyl ferrocene in a short time can be realized, and high catalytic activity and selectivity are shown.
Owner:徐州顺平生物科技有限公司
2-(4-nitrophenyl)-6-ferrocenyl-imidazo[2,1-b]-1,3,4-thiadiazole preparation method
InactiveCN107501340AShort reaction timeImprove reaction efficiencyMetallocenesMicrowave ovenThiadiazoles
The present invention discloses a 2-(4-nitrophenyl)-6-ferrocenyl-imidazo[2,1-b]-1,3,4-thiadiazole preparation method, which comprises: carrying out stirring mixing on 2-amino-5-(4-nitrophenyl)-1,3,4-thiadiazole, alpha-bromo-acetylferrocene and ethanol; placing the mixed solution in a microwave oven, and carrying out microwave irradiation; after the alpha-bromo-acetylferrocene completely reacts, carrying out a microwave reaction; adding water to the reaction solution, and adjusting the pH value of the reaction solution to 7-8 with a saturated sodium carbonate solution; carrying out suction filtration, washing the filter cake with water, and drying to obtain a crude product; and re-crystallizing with DMF to obtain the target product. According to the present invention, the microwave-assisted synthesis reaction is used so as to substantially shorten the reaction time and improve the reaction efficiency.
![2-(4-nitrophenyl)-6-ferrocenyl-imidazo[2,1-b]-1,3,4-thiadiazole preparation method](https://images-eureka-patsnap-com.libproxy1.nus.edu.sg/patent_img/1ae1a5b8-f502-473f-9bbc-8c2b9645278d/BDA0001016046290000031.png "2-(4-nitrophenyl)-6-ferrocenyl-imidazo[2,1-b]-1,3,4-thiadiazole preparation method")
Owner:ZHANGJIAGANG MAOAN TRADING
2-n-propyl-6-ferrocenyl-imidazo[2,1-b]-1,3,4-thiadiazole preparation method
InactiveCN107501339AShort reaction timeImprove reaction efficiencyMetallocenesMicrowave ovenThiadiazoles
The present invention discloses a 2-n-propyl-6-ferrocenyl-imidazo[2,1-b]-1,3,4-thiadiazole preparation method, which comprises: carrying out stirring mixing on 2-amino-5-n-propyl-1,3,4-thiadiazole, alpha-bromo-acetylferrocene and ethanol; placing the mixed solution in a microwave oven, and carrying out microwave irradiation; after the alpha-bromo-acetylferrocene completely reacts, carrying out a microwave reaction; adding water to the reaction solution, and adjusting the pH value of the reaction solution to 7-8 with a saturated sodium carbonate solution; carrying out suction filtration, washing the filter cake with water, and drying to obtain a crude product; and re-crystallizing with DMF to obtain the target product. According to the present invention, the microwave-assisted synthesis reaction is used so as to substantially shorten the reaction time and improve the reaction efficiency.
![2-n-propyl-6-ferrocenyl-imidazo[2,1-b]-1,3,4-thiadiazole preparation method](https://images-eureka-patsnap-com.libproxy1.nus.edu.sg/patent_img/1af0947a-c6f2-475f-a9df-146ceb6ac16d/BDA0001016585240000011.png "2-n-propyl-6-ferrocenyl-imidazo[2,1-b]-1,3,4-thiadiazole preparation method")
![2-n-propyl-6-ferrocenyl-imidazo[2,1-b]-1,3,4-thiadiazole preparation method](https://images-eureka-patsnap-com.libproxy1.nus.edu.sg/patent_img/1af0947a-c6f2-475f-a9df-146ceb6ac16d/BDA0001016585240000031.png "2-n-propyl-6-ferrocenyl-imidazo[2,1-b]-1,3,4-thiadiazole preparation method")
![2-n-propyl-6-ferrocenyl-imidazo[2,1-b]-1,3,4-thiadiazole preparation method](https://images-eureka-patsnap-com.libproxy1.nus.edu.sg/patent_img/1af0947a-c6f2-475f-a9df-146ceb6ac16d/FDA0001016585230000011.png "2-n-propyl-6-ferrocenyl-imidazo[2,1-b]-1,3,4-thiadiazole preparation method")
Owner:ZHANGJIAGANG MAOAN TRADING
2-(4-trifluoromethylphenyl)-6-ferrocenyl-imidazo[2,1-b]-1,3,4-thiadiazole preparation method
InactiveCN107501348AShort reaction timeImprove reaction efficiencyMetallocenesMicrowave ovenThiadiazoles
The present invention discloses a 2-(4-trifluoromethylphenyl)-6-ferrocenyl-imidazo[2,1-b]-1,3,4-thiadiazole preparation method, which comprises: carrying out stirring mixing on 2-amino-5-(4-trifluoromethylphenyl)-1,3,4-thiadiazole, alpha-bromo-acetylferrocene and ethanol; placing the mixed solution in a microwave oven, and carrying out microwave irradiation; after the alpha-bromo-acetylferrocene completely reacts, carrying out a microwave reaction; adding water to the reaction solution, and adjusting the pH value of the reaction solution to 7-8 with a saturated sodium carbonate solution; carrying out suction filtration, washing the filter cake with water, and drying to obtain a crude product; and re-crystallizing with DMF to obtain the target product. According to the present invention, the microwave-assisted synthesis reaction is used so as to substantially shorten the reaction time and improve the reaction efficiency.
![2-(4-trifluoromethylphenyl)-6-ferrocenyl-imidazo[2,1-b]-1,3,4-thiadiazole preparation method](https://images-eureka-patsnap-com.libproxy1.nus.edu.sg/patent_img/1afc79fe-0a32-4475-a40b-f1e74d5d2e5e/BDA0001018268600000011.png "2-(4-trifluoromethylphenyl)-6-ferrocenyl-imidazo[2,1-b]-1,3,4-thiadiazole preparation method")
![2-(4-trifluoromethylphenyl)-6-ferrocenyl-imidazo[2,1-b]-1,3,4-thiadiazole preparation method](https://images-eureka-patsnap-com.libproxy1.nus.edu.sg/patent_img/1afc79fe-0a32-4475-a40b-f1e74d5d2e5e/BDA0001018268600000031.png "2-(4-trifluoromethylphenyl)-6-ferrocenyl-imidazo[2,1-b]-1,3,4-thiadiazole preparation method")
![2-(4-trifluoromethylphenyl)-6-ferrocenyl-imidazo[2,1-b]-1,3,4-thiadiazole preparation method](https://images-eureka-patsnap-com.libproxy1.nus.edu.sg/patent_img/1afc79fe-0a32-4475-a40b-f1e74d5d2e5e/FDA0001018268590000011.png "2-(4-trifluoromethylphenyl)-6-ferrocenyl-imidazo[2,1-b]-1,3,4-thiadiazole preparation method")
Owner:ZHANGJIAGANG MAOAN TRADING
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