Dayangchem's R&D center can offer custom synthesis according to the contract research and development services for the fine chemicals, pharmaceutical, biotechnique and some of the other chemicals. DayangChem can provide different quantities
Cas:4282-29-5
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inquiryOur main production base is located in Xuzhou industry park. We are certified both to the ISO 9001 and ISO 14001 Standards, have a safety management system in place.Our R&D team masters core technology for process-design of target building block
Cas:4282-29-5
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inquiryProduct Description Product website: http://www.finerchem.com Product Name Thiophene-3,4-dicarboxylic acid CAS No.
Cas:4282-29-5
Min.Order:1 Gram
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inquiryOur company was built in 2009 with an ISO certificate.In the past 6 years, we have grown up as a famous fine chemicals supplier in China and we had established stable business relationships with Samsung,LG,Merck,Thermo Fisher Scientific and so on.O
Cas:4282-29-5
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inquiryWITH US,YOUR MONEY IN SAFE,YOUR BUSINESS IN SAFE 1)Quick Response Within 12 hours; 2)Quality Guarantee: All products are strictly tested by our QC, confirmed by QA and approved by third party lab in China, USA, Canada, Germany, UK, Italy, France et
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inquiry1.No Less 8 years exporting experience. Clients can 100% received goods 2.Lower Price with higher quality 3,Free sample 4,We are sincerely responsible for the "product quality" and "After Service" Upbio is Specialized
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inquiryOur company has been in existence for 10 years since its establishment. We have our own unique team. The company integrates independent research and development, production and sales. We have established famous brands at home and abroad. At prese
Cas:4282-29-5
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FOB Price: $68.0 / 75.0
Type:Trading Company
inquiryTHIOPHENE-3,4-DICARBOXYLIC ACID CAS:4282-29-5 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemical intermediates, specializing in high quality o
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inquiryHello, dear friend! I'm Hansen and Allen from China. Welcome to my lookchem mall! The following is a brief introduction of our company's products and services. If you are interested in our products, please contact us by emai
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inquiryHenan Wentao Chemical Product Co.,Ltd is Located in Zhengzhou High-tech Development Zone with import and export license, We passed ISO 9001:2008 as well, Henan Wentao has developed more than 1000 compounds, which are widely used in the fields of prod
J&H CHEM R&D center can offer custom synthesis according to the contract research and development services for the fine chemicals, pharmaceutical, biotechnique and some of the other chemicals. J&H CHEM has some Manufacturing base in Jia
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inquiry1. Product advantages: exquisite appearance and unique functions. 2. Product Advantages: Our products are the best,fast speed ,in large stock 3. High-quality products and thoughtful service are your greatest satisfaction. 4. The product
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inquiryWhy Choose Us: 1. Factory direct sales, so we can provide the competitive price and high quality product base on 8 years of production and R&D experience. 2. It is available in stock for quick shipment.Products could be packaged according to cu
Zibo Hangyu Biotechnology Development Co., Ltd is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemi
Cas:4282-29-5
Min.Order:10 Gram
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inquiryOur advantages: 1, High quality with competitive price: 1) Standard:BP/USP/EP/Enterprise standard 2) All Purity≥99% 3) We are manufacturer and can provide high quality products with factory price. 2, Fast and safe delivery 1) Parcel can be
Cas:4282-29-5
Min.Order:1 Kilogram
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Type:Other
inquiryProduct name: Thiophene-3,4-Dicarboxylic Acid CAS No.:4282-29-5 Molecule Formula:C6H4O4S Molecule Weight:172.15 Purity: 99.0% Package: 25kg/drum Description:Colorless to light yellow transparent liquid Manufacture Standards:Enterprise Standard
Cas:4282-29-5
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryProduct Name: THIOPHENE-3,4-DICARBOXYLIC ACID Synonyms: 3,4-THIOPHENEDICARBOXYLIC ACID;THIOPHENE-3,4-DICARBOXYLIC ACID;3,4-Thiophenedicarboxylic acid,97%;3,4-Dicarboxythiophene;3,4-Thiophenedicarboxylic acid ,98%;THIOPHENE-3,4-DICARBOXYLATE;100
Cas:4282-29-5
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
inquirySAGECHEM is a chemical R&D, manufacturing and distribution company in China since 2009, including pharmaceutical intermediates, agrochemical, dyestuff intermediates, organosilicone, API and etc. We also offer a full range of services in custom synthe
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inquiryHigh quality,stable supply chain.Appearance:white/off-white or light yellow Storage:Store in cool and dry place, keep away from strong light and heat. Package:aluminum bottle,glass bottle,PTFE bottle,cardboard drum Application:This product can be use
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inquiryLower price, sample is available,SDS test documents are available,large stock in warehouseAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:Fine chemical intermediates, used as the main raw material for the synthe
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inquiryhigh purity lowest priceAppearance:solid or liquid Storage:in sealed air resistant place Package:drum and bag Application:for pharma use Transportation:by sea or air Port:Beijing or Guangzhou
Acmec is a leading manufacturer and supplier of biochemical reagents and life science products. We have over 40,000 items in stock (real-time inventory) and offer discounted prices to registered members of the online store ( www.acmec.com.cn ) Appea
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inquiryhigh qualityAppearance:white crystalline powder Storage:Sealed, dry, microtherm , avoid light and smell. Package:According to the demand of customer Application:Organic synthesis Transportation:by air or by sea
Cas:4282-29-5
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Type:Manufacturers
inquiryTAIHO Unique Advantages:1.We're factory2.Free samples available3.Commodity inspection can be done4.ISO9001,Kosher certifications5.10 years experiences Storage:Store in cool &dry place Package:aluminium foil bag/fiber can/plastic drum Application:comp
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inquiryAnsciep Chemical is a professional enterprise manufacturing and distributing fine chemicals and speciality chemicals. We have been dedicated to heterocycle compounds and phenyl rings for tens of years. This is our mature product for export. Our quali
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inquiryAmoychem is committed to providing the top-quality chemical products and services Internationally. We offer our customers with friendly, professional service and reliable, high performance products that have been manufactured according to the accredi
Appearance:solid or liquid Storage:sealed in cool and dry place Package:As customer's requested Application:Pharma Intermediate Transportation:by courier/air/sea Port:Any port in China
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inquirygood quality, competitive price, thoughtful after sale serviceAppearance:white powder Storage:Keep it in dry,shady and cool place Package:25kg,50kg,180kg,200kg,250kg,1000kg,customization Application:Pharma;Industry;Agricultural;chemical reaserch Tran
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inquiry3,4-dicyanothiophene
thiophene-3,4-dicarboxylic acid
Conditions | Yield |
---|---|
With potassium hydroxide In ethylene glycol for 4h; Heating; | 90% |
Stage #1: 3,4-dicyanothiophene With potassium hydroxide In ethylene glycol Stage #2: With hydrogenchloride; water In ethylene glycol | 88% |
With potassium hydroxide In water; ethylene glycol | 88% |
Conditions | Yield |
---|---|
With sodium hydroxide In water at 80℃; | 80% |
thiophene-3,4-dicarboxylic acid
Conditions | Yield |
---|---|
With sodium hydroxide at 80℃; | 66% |
3,4-diiodothiophene
thiophene-3,4-dicarboxylic acid
Conditions | Yield |
---|---|
With n-butyllithium; diethyl ether at -60℃; Behandeln des Reaktionsgemisches mit festem Kohlendioxid; |
diethyl 2-formyl-3-(diethoxymethyl)succinate
thiophene-3,4-dicarboxylic acid
Conditions | Yield |
---|---|
With phosphorous (V) sulfide; toluene Erwaermen des Reaktionsprodukts mit wss.-aethanol. Natronlauge; | |
Multi-step reaction with 2 steps 1: P2S5 / toluene / 2 h / Heating 2: aq. NaOH / ethanol / Heating View Scheme |
Conditions | Yield |
---|---|
With sodium hydroxide In methanol; water at 41.1℃; Kinetics; various solvents, various temperatures; |
diethyl thiophene-3,4-dicarboxylate
thiophene-3,4-dicarboxylic acid
Conditions | Yield |
---|---|
With sodium hydroxide In ethanol Heating; Yield given; |
diethyl 2-(diethoxymethyl)succinate
thiophene-3,4-dicarboxylic acid
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: sodium ethylate; diethyl ether 2: toluene; phosphorus (V)-sulfide / Erwaermen des Reaktionsprodukts mit wss.-aethanol. Natronlauge View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: ethanol; sulfuric acid 2: sodium ethylate; diethyl ether 3: toluene; phosphorus (V)-sulfide / Erwaermen des Reaktionsprodukts mit wss.-aethanol. Natronlauge View Scheme |
3,4-dibromothiophene
carbon dioxide
A
4-bromo-3-thiophenecarboxylic acid
B
thiophene-3,4-dicarboxylic acid
Conditions | Yield |
---|---|
With n-butyllithium In diethyl ether |
Conditions | Yield |
---|---|
Stage #1: 3,4-dibromothiophene With n-butyllithium In diethyl ether at -70.16℃; for 0.5h; Stage #2: carbon dioxide In diethyl ether for 3h; Cooling with ether-dry ice; |
Conditions | Yield |
---|---|
Multi-step reaction with 6 steps 1: toluene-4-sulfonic acid / methanol / Reflux; Inert atmosphere 2: N-Bromosuccinimide; dibenzoyl peroxide / tetrachloromethane / 6 h / Inert atmosphere; Reflux 3: sodiumsulfide nonahydrate / tetrahydrofuran / 1 h / 20 °C 4: 3-chloro-benzenecarboperoxoic acid / 6 h / 20 °C 5: acetic anhydride / Inert atmosphere; Reflux 6: sodium hydroxide / water / 80 °C View Scheme |
dimethyl (Z)-2,3-dimethyl-2-butenedioate
thiophene-3,4-dicarboxylic acid
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1: N-Bromosuccinimide; dibenzoyl peroxide / tetrachloromethane / 6 h / Inert atmosphere; Reflux 2: sodiumsulfide nonahydrate / tetrahydrofuran / 1 h / 20 °C 3: 3-chloro-benzenecarboperoxoic acid / 6 h / 20 °C 4: acetic anhydride / Inert atmosphere; Reflux 5: sodium hydroxide / water / 80 °C View Scheme |
(E/Z)-Dimethyl 2,3-bis-butenedioate
thiophene-3,4-dicarboxylic acid
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: sodiumsulfide nonahydrate / tetrahydrofuran / 1 h / 20 °C 2: 3-chloro-benzenecarboperoxoic acid / 6 h / 20 °C 3: acetic anhydride / Inert atmosphere; Reflux 4: sodium hydroxide / water / 80 °C View Scheme |
3,4-dimethyl 2,5-dihydrothiophene-3,4-dicarboxylate
thiophene-3,4-dicarboxylic acid
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: 3-chloro-benzenecarboperoxoic acid / 6 h / 20 °C 2: acetic anhydride / Inert atmosphere; Reflux 3: sodium hydroxide / water / 80 °C View Scheme |
thiophene-3,4-dicarboxylic acid
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: acetic anhydride / Inert atmosphere; Reflux 2: sodium hydroxide / water / 80 °C View Scheme |
Conditions | Yield |
---|---|
With acetic anhydride at 110℃; | 100% |
With acetic anhydride at 140℃; for 12h; | 95% |
With acetic anhydride | 93% |
thiophene-3,4-dicarboxylic acid
thiophene-3,4-dicarboxylic acid chloride
Conditions | Yield |
---|---|
With oxalyl dichloride In N,N-dimethyl-formamide; toluene at 111℃; for 2h; Schlenk technique; Inert atmosphere; | 96% |
With thionyl chloride for 1h; Heating; | |
With oxalyl dichloride; N,N-dimethyl-formamide In 1,2-dichloro-ethane at 20 - 60℃; for 1.33333h; Inert atmosphere; |
thiophene-3,4-dicarboxylic acid
octanol
dioctyl thiophene-3,4-dicarboxylate
Conditions | Yield |
---|---|
With chloro-trimethyl-silane at 65℃; for 24h; Inert atmosphere; | 90% |
thiophene-3,4-dicarboxylic acid
Conditions | Yield |
---|---|
Stage #1: thiophene-3,4-dicarboxylic acid With acetic anhydride at 75℃; for 2h; Stage #2: 2-butyloctan-1-amine With dmap In 1,4-dioxane at 55 - 80℃; | 88.41% |
thiophene-3,4-dicarboxylic acid
2,5-dibromo-3,4-dicarboxylic acid thiophene
Conditions | Yield |
---|---|
Stage #1: thiophene-3,4-dicarboxylic acid With acetic acid for 0.5h; Cooling with ice; Stage #2: With bromine at 85℃; Cooling with ice; | 87.2% |
With bromine; acetic acid at 20℃; for 12h; | 85.6% |
With bromine In acetic acid | 80% |
methanol
thiophene-3,4-dicarboxylic acid
dimethyl thiophene-3,4-dicarboxylate
Conditions | Yield |
---|---|
With sulfuric acid Reflux; | 84% |
With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride at 20℃; | 23% |
With sulfuric acid |
Conditions | Yield |
---|---|
With [ruthenium(II)(η6-1-methyl-4-isopropyl-benzene)(chloride)(μ-chloride)]2; tetrabutylammomium bromide In N,N-dimethyl-formamide at 100℃; for 16h; Sealed tube; | 82% |
thiophene-3,4-dicarboxylic acid
[4-(hydroxymethyl)-3-thienyl]methanol
Conditions | Yield |
---|---|
With diisobutylaluminium hydride In tetrahydrofuran; hexane at 0 - 20℃; for 16h; | 77% |
With diisobutylaluminium hydride | |
Multi-step reaction with 2 steps 1: oxalyl dichloride; N,N-dimethyl-formamide / 1,2-dichloro-ethane / 1.33 h / 20 - 60 °C / Inert atmosphere 2: lithium aluminium tetrahydride / tetrahydrofuran / 3 h / 20 °C / Inert atmosphere View Scheme | |
Multi-step reaction with 2 steps 1: benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride / 20 °C 2: diisobutylaluminium hydride / dichloromethane; toluene / 0.08 h / 0 °C View Scheme | |
With borane-THF In tetrahydrofuran at 0 - 26℃; for 24h; Inert atmosphere; |
thiophene-3,4-dicarboxylic acid
N-butylamine
5-butyl-4H-thieno[3,4-c]pyrrole-4,6(5H)-dione
Conditions | Yield |
---|---|
Stage #1: thiophene-3,4-dicarboxylic acid With acetic anhydride at 140℃; for 24h; Inert atmosphere; Schlenk technique; Molecular sieve; Stage #2: N-butylamine In toluene for 24h; Inert atmosphere; Schlenk technique; Reflux; Stage #3: With thionyl chloride at 88℃; Inert atmosphere; Schlenk technique; | 77% |
Conditions | Yield |
---|---|
Stage #1: thiophene-3,4-dicarboxylic acid With ammonium hydroxide In water Heating; Stage #2: at 260 - 280℃; | 76% |
4,4'-bipyridine
thiophene-3,4-dicarboxylic acid
cadmium(II) acetate dihydrate
Conditions | Yield |
---|---|
In water at 140℃; for 120h; Sealed tube; | 76% |
thiophene-3,4-dicarboxylic acid
2-n-hexyldecan-1-amine
5-(2-hexyldecyl)-4H-thieno[3,4-c]pyrrole-4,6(5H)-dione
Conditions | Yield |
---|---|
at 220 - 250℃; Inert atmosphere; Dean-Stark; | 74% |
Stage #1: thiophene-3,4-dicarboxylic acid With acetic anhydride at 75℃; for 2h; Stage #2: 2-n-hexyldecan-1-amine With dmap In 1,4-dioxane at 55℃; for 20h; Stage #3: With acetic anhydride In 1,4-dioxane at 80℃; for 4h; | 66% |
2-Ethylhexylamine
thiophene-3,4-dicarboxylic acid
5-(2-ethylhexyl)-4H-thieno[3,4-c]pyrrole-4,6(5H)-dione
Conditions | Yield |
---|---|
Stage #1: thiophene-3,4-dicarboxylic acid With acetic anhydride at 140℃; Stage #2: 2-Ethylhexylamine In toluene for 24h; Reflux; Stage #3: With thionyl chloride for 4h; Reflux; | 73.6% |
Stage #1: thiophene-3,4-dicarboxylic acid With acetic anhydride at 140℃; Stage #2: 2-Ethylhexylamine In toluene for 24h; Reflux; Stage #3: With thionyl chloride In toluene Reflux; | 65% |
Stage #1: thiophene-3,4-dicarboxylic acid With acetic anhydride at 140℃; Stage #2: 2-Ethylhexylamine In toluene for 24h; Reflux; Stage #3: With thionyl chloride for 4h; Reflux; | 48% |
Stage #1: thiophene-3,4-dicarboxylic acid With acetic anhydride at 140℃; Stage #2: 2-Ethylhexylamine In toluene for 24h; Reflux; Stage #3: With thionyl chloride for 12h; Reflux; | |
Stage #1: thiophene-3,4-dicarboxylic acid With acetic anhydride at 140℃; Stage #2: 2-Ethylhexylamine In toluene for 24h; Reflux; Stage #3: With thionyl chloride for 12h; Reflux; |
Conditions | Yield |
---|---|
In toluene under inert atm. suspn. Mo2(O2C-t-Bu)4 and SC4H2-3,4-(COOH)2 in toluene was stirred for 21 days; ppt. was centrifuged, washed with toluene and hexane and dried in vacuo;elem. anal.; | 70% |
thiophene-3,4-dicarboxylic acid
W2(O2C(t)Bu)4
W8(O2C(t)Bu)4(μ-SC4H2-3,4-(CO2)2)6
Conditions | Yield |
---|---|
In toluene under inert atm. suspn. W2(O2C-t-Bu)4 and SC4H2-3,4-(COOH)2 in toluene was stirred for 28 days; ppt. was centrifuged, washed with toluene and hexane and dried in vacuo; | 68% |
thiophene-3,4-dicarboxylic acid
ethanol
diethyl thiophene-3,4-dicarboxylate
Conditions | Yield |
---|---|
With sulfuric acid Fischer-Speier Esterification; Reflux; | 61% |
With sulfuric acid | |
With sulfuric acid In water Inert atmosphere; |
thiophene-3,4-dicarboxylic acid
n-Octylamine
5-octyl-4H-thieno[3,4-c]pyrrole-4,6(5H)-dione
Conditions | Yield |
---|---|
Stage #1: thiophene-3,4-dicarboxylic acid With acetic anhydride at 140℃; Stage #2: n-Octylamine In toluene for 24h; Reflux; Stage #3: With thionyl chloride for 4h; Reflux; | 57% |
Stage #1: thiophene-3,4-dicarboxylic acid With acetic anhydride at 140℃; Stage #2: n-Octylamine In toluene for 24h; Reflux; Stage #3: With thionyl chloride In toluene for 12h; Reflux; | |
Stage #1: thiophene-3,4-dicarboxylic acid With acetic anhydride at 140℃; Stage #2: n-Octylamine In toluene for 24h; Reflux; Stage #3: With thionyl chloride for 12h; Reflux; | |
Stage #1: thiophene-3,4-dicarboxylic acid With acetic anhydride at 140℃; Stage #2: n-Octylamine In toluene for 24h; Reflux; Stage #3: With thionyl chloride for 12h; Reflux; | |
In neat (no solvent) at 200 - 280℃; for 0.166667h; |
thiophene-3,4-dicarboxylic acid
n-Dodecylamine
5-dodecyl-4H-thieno[3,4-c]pyrrole-4,6(5H)-dione
Conditions | Yield |
---|---|
Stage #1: thiophene-3,4-dicarboxylic acid With acetic anhydride at 140℃; Stage #2: n-Dodecylamine In toluene for 24h; Reflux; Stage #3: With thionyl chloride In toluene Reflux; | 55% |
thiophene-3,4-dicarboxylic acid
cadmium(II) acetate dihydrate
trans-1,2-bis(4-pyridyl)ethylene
Conditions | Yield |
---|---|
In water at 140℃; for 120h; Sealed tube; | 53% |
thiophene-3,4-dicarboxylic acid
1,3-di(4-pyridyl)propane
cadmium(II) acetate dihydrate
Conditions | Yield |
---|---|
In water at 140℃; for 120h; Sealed tube; | 53% |
Conditions | Yield |
---|---|
Stage #1: picoline; thiophene-3,4-dicarboxylic acid With pyridine; ammonia at 20℃; under 750.075 Torr; for 0.5h; Stage #2: With phosphoric acid triphenyl ester for 6h; Reflux; | 46% |
Conditions | Yield |
---|---|
With piperazine at 180℃; for 73h; Autoclave; | 43.2% |
thiophene-3,4-dicarboxylic acid
3,5‐bis(1‐imidazolyl)pyridine
cadmium(II) acetate dihydrate
{[Cd(3,4-thiophenedicarboxylate)(3,5-bis(imidazol-1’-yl)pyridine)](H2O)}n
Conditions | Yield |
---|---|
In water at 140℃; for 120h; Autoclave; | 43% |
thiophene-3,4-dicarboxylic acid
methyl iodide
dimethyl thiophene-3,4-dicarboxylate
Conditions | Yield |
---|---|
With potassium carbonate In N,N-dimethyl-formamide at 40℃; for 18h; | 40% |
thiophene-3,4-dicarboxylic acid
1,2-bis(4'-pyridyl)ethane
cadmium(II) acetate dihydrate
Conditions | Yield |
---|---|
In water at 140℃; for 120h; Autoclave; | 39% |
Conditions | Yield |
---|---|
With piperazine at 180℃; for 73h; Autoclave; | 28.6% |
thiophene-3,4-dicarboxylic acid
tert-butyl alcohol
A
1-t-Butoxycarbonylthieno<3,4-d>imidazolone
B
5,10-Dihydroxydithieno<3,4-b:3',4'-f><1,5>diazocine
C
tert-butyl {4-[(tert-butoxycarbonyl)amino]thien-3-yl}carbamate
Conditions | Yield |
---|---|
With diphenyl phosphoryl azide; triethylamine for 20h; Heating; | A 17% B 28% C 5% |
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