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
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inquiry3,4-Dibromothiophene CAS No.:3141-26-2 Name: 3,4-Dibromothiophene Molecular Structure Molecular Formula: C4H2Br2S Molecular Weight: 241.93 CAS Registry Number: 3141-26-2 EINECS: 221-546-8 Density: 2.13
Cas:3141-26-2
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inquiryThe above product is Ality Chemical's strong item with best price, good quality and fast supply. Ality Chemical has been focusing on the research and production of this field for over 14 years. At the same time, we are always committed to providi
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inquiryOur company was built in 2009 with an ISO certificate.In the past 5 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
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inquiryWith our good experience, we offer detailed technical support and advice to assist customers. We communicate closely with customers to establish their quality requirements. Consistent Quality Our plant has strict quality control in each manufacturin
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inquiryOur Advantage: high quality with competitive price High quality standard: BP/USP/EP Enterprise standard All purity customized Fast and safe delivery We have reliable forwarder who can help us deliver our goods more fast and safe. We
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inquiry1. Best prices with satisfied quality; 2. It's clients' right to choose the package's Courier (EMS, DHL, FedEx, UPS); 3.It's clients' right to choose the packing way for his produccts from many recent effective packing ways;
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inquiryProduct Name: 3,4-Dibromothiophene Synonyms: thiophene,3,4-dibromo-;AKOS 93381;3,4-DIBROMOTHIOPHENE;2,5-Dibromotthiophenone;3,4-Dibromothiophene, 98+%;3,4-Dibromothiophene 98%;3,4-DIBROMO THIOPHENE 98.0%MIN;3,4-Dibromothiophene ,99% CAS: 314
Cas:3141-26-2
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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:3141-26-2
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inquiry3,4-Dibromothiophene CAS:3141-26-2 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 organic inter
Cas:3141-26-2
Min.Order:1 Gram
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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
Cas:3141-26-2
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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
Hebei Mojin Biotechnology Co., Ltd, Our company is a professional chemical raw materials and chemical reagents research and development production enterprises. We have several production line,So we can control the lowest price. We also have several
Cas:3141-26-2
Min.Order:25 Gram
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Hangzhou KeyingChem Co., Ltd. exported this product to many countries and regions at best price. If you are looking for the material’s manufacturer or supplier in China, KeyingChem is your best choice. Pls contact with us freely for getting det
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inquiryCompany Introduction 1. Established in 2005, with two independent business divisions: Fine chemicals division; Pharmaceutical division. 2. Main product: Optical brightener Textile auxiliary Dye stuff Pigments
Cas:3141-26-2
Min.Order:1 Gram
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inquiryJ&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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Cas:3141-26-2
Min.Order:10 Gram
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inquiry3,4-DibromothiopheneAppearance:powder Storage:store in cool, dry place Package:according to customers' requirements Application:3141-26-2 Transportation:By air(EMS or EUB or FedEx or TNT ect...) or by sea(FOB or CIF or CNF ect...)or according to your
Product Details Grade: pharmaceutical grade Purity:99%+ ProductionCapacity: 1000 Kilogram/Month Scope of use: For scientific research only(The product must be used legally) Our Advantage 1. Best quality with competitive price. 2. Quick shipping,
Cas:3141-26-2
Min.Order:1 Kilogram
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inquiryProduct name: 3,4-Dibromothiophene CAS No.:3141-26-2 Molecule Formula:C4H2Br2S Molecule Weight:241.93 Purity: 99.0% Package: 25kg/drum Description:White crystalline powder Manufacture Standards:Enterprise Standard TESTING ITEMS
Cas:3141-26-2
Min.Order:1 Kilogram
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inquiryGMP standard, high purity, competitive price, in stock 1. Quick Response: within 6 hours after receiving your email. 2. Quality Guarantee: All products are strictly tested by our QC, confirmed by QA, and approved by a third-party lab in China, USA,
factory?direct?saleAppearance:White Powder Storage:Store In Dry, Cool And Ventilated Place Package:25kg/drum, also according to the clients requirement Application:It is widely used as a thickener, emulsifier and stabilizer Transportation:By Sea Or B
Cas:3141-26-2
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Type:Trading Company
inquiryConditions | Yield |
---|---|
With acetic acid; zinc In water at 20℃; | 92% |
With hydrogen bromide; cadmium(II) chloride In methanol; dichloromethane at 35℃; for 5h; | 89% |
In methanol; dichloromethane at 35℃; for 5h; Product distribution; electrolysis in presence of CdCl2 and HBr at 1 A (83 mA/cm2), 13.5-11.5 V; other conditions and other bromothiophenes investigated; | 89% |
Conditions | Yield |
---|---|
Stage #1: Tetrabromothiophene With n-butyllithium In diethyl ether; hexane at 0℃; for 1.66667 - 1.83333h; Argon atmosphere; Stage #2: C4Br2Li2S With water at 0℃; | 77% |
Conditions | Yield |
---|---|
In N,N-dimethyl-formamide divided cell electrolysis at constant potential (-1.70 V); 0.1 M tetraethylammonium bromide, mercury electrode; | A 74% B 3% |
Conditions | Yield |
---|---|
With sodium amide; ferric nitrate In ammonia | A 72% B n/a |
2-bromothiophene
A
3,4-dibromothiophene
B
2,3,5-tribromothiophene
C
2,3,4-tribromothiophene
D
Tetrabromothiophene
Conditions | Yield |
---|---|
With potassium tert-butylate; sodium amide In ammonia for 3h; Further byproducts given; | A 65% B n/a C n/a D n/a |
Conditions | Yield |
---|---|
In N,N-dimethyl-formamide divided cell electrolysis at constant potential (-1.20 V); 0.1 M tetraethylammonium bromide, mercury electrode; | 60% |
With methyl bromide; diethyl ether; magnesium Erhitzen des Reaktionsprodukts mit Wasserdampf; |
Conditions | Yield |
---|---|
Stage #1: thiophene With bromine In chloroform for 4h; Heating; Stage #2: With acetic acid; zinc In water Heating; | A 23% B 51% |
3,4-dibromo-2,5-dimethylthiophene
A
3,4-dibromothiophene
B
3,4-dibromo-2,5-dimethylthiophene-1,1-dioxide
C
C6H2Br2O3S
D
3,4-Dibromo-2,5-dimethylthiophene S-monoxide
Conditions | Yield |
---|---|
With aluminum oxide; ferric hydroxide; ethylenediaminetetraacetic acid; dihydrogen peroxide In methanol; water at 50 - 55℃; for 5h; Mechanism; | A 36% B 10% C 16% D 30% |
In methanol; water at 50 - 55℃; for 5h; Mechanism; | A 8% B 10% C 16% D 30% |
Conditions | Yield |
---|---|
With methyl bromide; diethyl ether; magnesium Behandeln des Reaktionsprodukts mit Wasser; |
2,5-dibromothiophen
A
thiophene
B
2-bromothiophene
C
3-Bromothiophene
D
3,4-dibromothiophene
Conditions | Yield |
---|---|
With tetramethylammonium perchlorate In N,N-dimethyl-formamide Product distribution; Mechanism; controlled-potential electrolysis at reticulated vitreous carbon; further reagents; |
thiophene
3,4-dibromothiophene
Conditions | Yield |
---|---|
With bromine; acetic acid; zinc Yield given. Multistep reaction; |
Tetrabromothiophene
acetic acid
A
3-Bromothiophene
B
3,4-dibromothiophene
formic acid
3,4-dibromo-thiophene-2-carboxylic acid-(3,4-dibromo-[2]thienylmethyl ester)
A
3,4-dibromothiophene
B
(3,4-dibromo-thiophen-2-yl)-methanol
C
3,4-dibromo-2-thiophenecarboxylic acid
3,4-dibromo-2,5-thiophenedicarboxaldehyde
A
3,4-dibromothiophene
B
(3,4-dibromo-thiophen-2-yl)-methanol
C
formic acid
D
3,4-dibromo-2-thiophenecarboxylic acid
Conditions | Yield |
---|---|
With 1,3-bis[(diphenylphosphino)propane]dichloronickel(II) In diethyl ether Reflux; | 100% |
With 1,3-bis[(diphenylphosphino)propane]dichloronickel(II) In diethyl ether Cooling with ice; Reflux; | 89% |
With [1,3-bis(diphenylphosphino)propane]nickel(II) dichloride In tetrahydrofuran for 4h; Heating; | 64% |
With 1,3-bis[(diphenylphosphino)propane]dichloronickel(II) In tetrahydrofuran; diethyl ether at 0 - 20℃; |
3,4-dibromothiophene
tetradecanoyl chloride
(3,4-dibromothien-2-yl)-tridecyl-ketone
Conditions | Yield |
---|---|
aluminum (III) chloride In dichloromethane at 0℃; Friedel Crafts Acylation; Inert atmosphere; | 100% |
Stage #1: 3,4-dibromothiophene; tetradecanoyl chloride With aluminum (III) chloride In dichloromethane at 0℃; Inert atmosphere; Stage #2: With hydrogenchloride In dichloromethane; water |
2-(ethoxycarbonyl)phenylboronic acid
3,4-dibromothiophene
Conditions | Yield |
---|---|
With dicyclohexyl-(2',6'-dimethoxybiphenyl-2-yl)-phosphane; potassium phosphate; tris-(dibenzylideneacetone)dipalladium(0) In toluene at 100℃; for 16h; Suzuki-Miyaura Coupling; Inert atmosphere; Sealed tube; | 100% |
With dicyclohexyl-(2',6'-dimethoxybiphenyl-2-yl)-phosphane; potassium phosphate; tris-(dibenzylideneacetone)dipalladium(0) In toluene at 100℃; Suzuki-Miyaura Coupling; |
3,4-dibromothiophene
chloro-trimethyl-silane
3,4-dibromothiophene-2,5-diyl-bis(trimethylsilane)
Conditions | Yield |
---|---|
Stage #1: 3,4-dibromothiophene With lithium diisopropyl amide In diethyl ether; hexane at 0℃; for 2h; Stage #2: chloro-trimethyl-silane In diethyl ether; hexane at -78 - 20℃; | 99.6% |
Stage #1: 3,4-dibromothiophene With lithium diisopropyl amide In tetrahydrofuran; n-heptane; ethylbenzene at -78℃; for 0.5h; Inert atmosphere; Stage #2: chloro-trimethyl-silane In tetrahydrofuran; n-heptane; ethylbenzene at -78℃; for 0.5h; Inert atmosphere; | 72% |
With lithium diisopropyl amide Inert atmosphere; |
3,4-dibromothiophene
4-d1-3-bromothiophene
Conditions | Yield |
---|---|
Stage #1: 3,4-dibromothiophene With isopropylmagnesium chloride In tetrahydrofuran at 0℃; for 1.5h; Stage #2: With 2D(1+)*SO4(2-)=D2SO4; water-d2 In tetrahydrofuran | 99% |
Stage #1: 3,4-dibromothiophene With n-butyllithium In diethyl ether; hexane at -78℃; for 0.416667h; Stage #2: With d(4)-methanol In diethyl ether; hexane at -78 - 20℃; for 0.583333h; | 58% |
With n-butyllithium; water-d2 In diethyl ether; hexane at -70℃; for 0.333333h; |
3,4-dibromothiophene
Conditions | Yield |
---|---|
bis-triphenylphosphine-palladium(II) chloride In benzene at 80℃; for 24h; | 99% |
3,4-dibromothiophene
acetyl chloride
1-(3,4-dibromothiophen-2-yl)ethanone
Conditions | Yield |
---|---|
Stage #1: 3,4-dibromothiophene With aluminum (III) chloride In dichloromethane at 0℃; Friedel Crafts acylation; Stage #2: acetyl chloride at 0℃; Friedel Crafts acylation; | 98% |
Stage #1: 3,4-dibromothiophene; acetyl chloride With aluminum (III) chloride In dichloromethane at 0℃; Inert atmosphere; Stage #2: With hydrogenchloride; water In dichloromethane | 95% |
With aluminium trichloride; Petroleum ether | |
With aluminium trichloride In dichloromethane Friedel-Crafts acylation; cooling; | |
Stage #1: 3,4-dibromothiophene; acetyl chloride With aluminum (III) chloride In dichloromethane at 0℃; Inert atmosphere; Stage #2: With hydrogenchloride In dichloromethane; water |
3,4-dibromothiophene
n-hexylmagnesium bromide
3,4-di-n-hexylthiophene
Conditions | Yield |
---|---|
With 1,3-bis[(diphenylphosphino)propane]dichloronickel(II) In diethyl ether | 98% |
With 1,3-bis[(diphenylphosphino)propane]dichloronickel(II) In diethyl ether at 0℃; for 20h; Inert atmosphere; Reflux; | 93% |
With 1,3-bis[(diphenylphosphino)propane]dichloronickel(II) In diethyl ether for 12h; Kumada Cross-Coupling; Cooling with ice; | 93% |
3,4-dibromothiophene
5,5-dimethyl-5H-dibenzo[b,d]stannole
phenanthro[9,10-c]thiophene
Conditions | Yield |
---|---|
With bis(tri-t-butylphosphine)palladium(0) In tetrahydrofuran at 60℃; for 12h; | 98% |
3,4-dibromothiophene
chloroformic acid ethyl ester
4.-brorno-thiophene-3-carboxylic acid ethyl ester
Conditions | Yield |
---|---|
Stage #1: 3,4-dibromothiophene With isopropylmagnesium chloride In tetrahydrofuran at 0 - 5℃; for 5h; Stage #2: chloroformic acid ethyl ester In tetrahydrofuran at 10 - 20℃; for 16h; Stage #3: With water In tetrahydrofuran at 20℃; for 0.166667h; | 98% |
Stage #1: 3,4-dibromothiophene With isopropylmagnesium bromide In tetrahydrofuran at 0℃; for 5h; Stage #2: chloroformic acid ethyl ester at 0 - 20℃; for 14h; | 82% |
With isopropylmagnesium chloride In tetrahydrofuran at 0 - 25℃; |
Conditions | Yield |
---|---|
97% | |
With aluminium trichloride In carbon disulfide for 1h; Heating; | |
With aluminum (III) chloride In carbon disulfide Friedel Crafts acylation; |
3,4-dibromothiophene
triisopropylsilyl chloride
Conditions | Yield |
---|---|
Stage #1: 3,4-dibromothiophene With lithium diisopropyl amide In tetrahydrofuran; hexane at -78℃; for 1h; Inert atmosphere; Stage #2: triisopropylsilyl chloride In tetrahydrofuran; hexane at -78 - 20℃; Inert atmosphere; | 97% |
With n-butyllithium; diisopropylamine In tetrahydrofuran; hexane at -78 - 20℃; Inert atmosphere; | 97% |
3,4-dibromothiophene
2-Bromoacetyl bromide
2-bromo-1-(3,4-dibromothiophen-2-yl)ethanone
Conditions | Yield |
---|---|
With aluminum (III) chloride In carbon disulfide at 20℃; Friedel Crafts acylation; Reflux; | 96% |
Conditions | Yield |
---|---|
Stage #1: phenylboronic acid With tris-(dibenzylideneacetone)dipalladium(0); sodium carbonate; triphenylphosphine In toluene at 20℃; Suzuki coupling; Inert atmosphere; Stage #2: 3,4-dibromothiophene In toluene Suzuki coupling; Inert atmosphere; Stage #3: With sodium carbonate In toluene at 20℃; Inert atmosphere; Reflux; | 96% |
With tetrakis(triphenylphosphine) palladium(0); sodium carbonate In ethanol; water; benzene Suzuki coupling; Inert atmosphere; Reflux; | 68% |
3,4-dibromothiophene
methanol
A
2,3-dimethoxythiophene
B
3-bromo-4-methoxythiophene
Conditions | Yield |
---|---|
With sodium; potassium iodide; copper(II) oxide at 97℃; for 72h; Inert atmosphere; | A 96% B n/a |
Conditions | Yield |
---|---|
With n-butyllithium In diethyl ether | 96% |
Conditions | Yield |
---|---|
Stage #1: 1-Bromotetradecane With iodine; magnesium In diethyl ether at 0℃; for 1h; Stage #2: 3,4-dibromothiophene With 1,3-bis[(diphenylphosphino)propane]dichloronickel(II) In diethyl ether at 0 - 20℃; for 12h; | 96% |
3,4-dibromothiophene
dibromo-3,4 nitro-2 thiophene
Conditions | Yield |
---|---|
With sulfuric acid; nitric acid In chloroform at 50℃; for 24h; | 95% |
With nitric acid; acetic anhydride | |
With nitric acid; acetic anhydride; acetic acid |
Conditions | Yield |
---|---|
1,3-bis[(diphenylphosphino)propane]dichloronickel(II) | 95% |
dichloro[propane-1,3-diylbis(diphenylphosphane)]nickel(II) In diethyl ether for 20h; Heating; | 95 % Chromat. |
Conditions | Yield |
---|---|
With potassium carbonate; allylpalladium(II) chloride dimer; Tedicyp In N,N-dimethyl-formamide at 140℃; for 24h; Heck reaction; | 95% |
Conditions | Yield |
---|---|
With [1,1'-bis(diphenylphosphino)-ferrocene]palladium(II) chloride-dichlormethane complex In N,N-dimethyl acetamide at 80℃; for 12h; | 95% |
3,4-dibromothiophene
n-butyl magnesium bromide
formaldehyd
3,4-dibutyl-5-(hydroxymethyl)thiophene
Conditions | Yield |
---|---|
Stage #1: 3,4-dibromothiophene; n-butyl magnesium bromide With 1,3-bis[(diphenylphosphino)propane]dichloronickel(II) Kumada Cross-Coupling; Inert atmosphere; Schlenk technique; Stage #2: With n-butyllithium In tetrahydrofuran at 0℃; for 0.75h; Inert atmosphere; Schlenk technique; Stage #3: formaldehyd In tetrahydrofuran at 20℃; for 3h; Inert atmosphere; Schlenk technique; | 95% |
3,4-dibromothiophene
P-toluenesulfonyl cyanide
4-bromothiophene-3-carbonitrile
Conditions | Yield |
---|---|
Stage #1: 3,4-dibromothiophene With isopropylmagnesium chloride In tetrahydrofuran at 0 - 5℃; Stage #2: P-toluenesulfonyl cyanide In tetrahydrofuran at 0 - 5℃; Stage #3: With water In tetrahydrofuran for 0.166667h; | 94.3% |
Conditions | Yield |
---|---|
With 1,3-bis[(diphenylphosphino)propane]dichloronickel(II) In tetrahydrofuran; diethyl ether at 0 - 20℃; | 94% |
With 1,3-bis[(diphenylphosphino)propane]dichloronickel(II) In diethyl ether at 25℃; for 16h; Kumada Cross-Coupling; | 76% |
With 1,3-bis[(diphenylphosphino)propane]dichloronickel(II) In diethyl ether at 20℃; for 48h; | 43% |
3,4-dibromothiophene
thiophene-3,4-diamine
Conditions | Yield |
---|---|
With [Cu2(2,7-bis(pyridin-2-yl)-l,8-naphthyridine)(OH)(CF3COO)3]; tetrabutylammomium bromide; ammonia; caesium carbonate In ethylene glycol at 140℃; for 16h; Sealed tube; chemoselective reaction; | 94% |
3,4-dibromothiophene
3,4-dichlorothiophene
Conditions | Yield |
---|---|
With copper(l) chloride In N,N-dimethyl-formamide for 24h; Reflux; Inert atmosphere; | 94% |
3,4-dibromothiophene
Dimethyldisulphide
3-bromo-4-(methylthio)thiophene
Conditions | Yield |
---|---|
Stage #1: 3,4-dibromothiophene With n-butyllithium In diethyl ether; hexane at -78℃; for 0.5h; Stage #2: Dimethyldisulphide In diethyl ether; hexane at -78 - 20℃; for 12h; | 93% |
With n-butyllithium In diethyl ether; hexane 1.) - 80 deg C, 1 h, 2.) -70 deg C, 3 h; | 50% |
With n-butyllithium In diethyl ether; water | |
Stage #1: 3,4-dibromothiophene With n-butyllithium In tetrahydrofuran; hexane at -78℃; for 0.133333h; Stage #2: Dimethyldisulphide In tetrahydrofuran; hexane at -78℃; for 0.05h; |
3,4-dibromothiophene
4-butylphenylboronic acid
Conditions | Yield |
---|---|
With potassium fluoride; tetrakis(triphenylphosphine) palladium(0) In water; toluene for 19h; Inert atmosphere; Reflux; | 93% |
With potassium fluoride; tetrakis(triphenylphosphine) palladium(0) In water; toluene Heating; | 60% |
Conditions | Yield |
---|---|
With potassium iodide; copper(II) oxide In ethanol at 120℃; under 3000.3 Torr; for 6h; Temperature; Inert atmosphere; Autoclave; | 92.1% |
Conditions | Yield |
---|---|
With aluminum (III) chloride at 0 - 20℃; | 92% |
With aluminum (III) chloride In dichloromethane at 0 - 20℃; for 16h; Friedel-Crafts Acylation; | 92% |
With aluminium trichloride; Petroleum ether |
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