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Dayang Chem (Hangzhou) Co.,Ltd.

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

3,4-Dibromothiophene Manufacturer/High quality/Best price/In stock

Cas:3141-26-2

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

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Simagchem Corporation

Welcome to Simagchem, your partner in China as a premier supply of bulk specialty chemicals for industry and life science. We introduce experienced quality product and exceptional JIT service with instant market intelligence in China to benefit our

High quality 3,4-Dibromothiophene supplier in China

Cas:3141-26-2

Min.Order:0 Metric Ton

Negotiable

Type:Manufacturers

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Hangzhou Think Chemical Co. Ltd

3,4-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

High purity 3,4-Dibromothiophene CAS No.:3141-26-2

Cas:3141-26-2

Min.Order:1 Kilogram

FOB Price: $2.0

Type:Other

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Ality Chemical Corporation

The 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

Factory Supply 3,4-Dibromothiophene

Cas:3141-26-2

Min.Order:1

Negotiable

Type:Other

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Chemwill Asia Co., Ltd.

Our 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

3,4-Dibromothiophene

Cas:3141-26-2

Min.Order:5 Kiloliter

FOB Price: $1.2 / 5.0

Type:Manufacturers

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Hebei yanxi chemical co.,LTD.

chengdu and import and export trade co., LTD., who registered capital of 10 million yuan, nearly to $2 million, we have a pharmaceutical raw materials factory production of pharmaceutical raw materials, and a reagent r&d center, and we do res

3,4-Dibromothiophene

Cas:3141-26-2

Min.Order:5 Metric Ton

FOB Price: $110.0 / 150.0

Type:Trading Company

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Henan Tianfu Chemical Co., Ltd.

Our 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

3,4-Dibromothiophene 3141-26-2

Cas:3141-26-2

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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Hebei Nengqian Chemical Import and Export Co., LTD

With 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

3,4-Dibromothiophene with top quality

Cas:3141-26-2

Min.Order:1 Kilogram

FOB Price: $100.0 / 150.0

Type:Trading Company

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Zhuozhou Wenxi import and Export Co., Ltd

WITH 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

Top Purity CAS 3141-26-2 with fast shipping

Cas:3141-26-2

Min.Order:1 Kilogram

FOB Price: $139.0 / 210.0

Type:Trading Company

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Wuhan Han Sheng New Material Technology Co.,Ltd

Our 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

Intermediates 3, 4-Dibromothiophene, CAS No. 3141-26-2

Cas:3141-26-2

Min.Order:10 Kilogram

Negotiable

Type:Trading Company

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Shijiazhuang Sdyano Fine Chemical Co., Ltd

1. 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;

3,4-Dibromothiophene

Cas:3141-26-2

Min.Order:0 Metric Ton

Negotiable

Type:Trading Company

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Hubei Langyou International Trading Co., Ltd

1. Guaranteed purity; 2. Large quantity in stock; 3. Largest manufacturer; 4. Best service after shipment with email; 5. High quality & competitive price; Appearance:liquid Storage:Store in sealed containers at cool & dry pla

3,4-Dibromothiophene/2,5-Dibromotthiophenone CAS 3141-26-2

Cas:3141-26-2

Min.Order:100 Gram

Negotiable

Type:Other

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Shanghai Upbio Tech Co.,Ltd

1.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

3,4-Dibromothiophene 3141-26-2

Cas:3141-26-2

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Shanghai Minstar Chemical Co., Ltd

Product 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

3,4-Dibromothiophene

Cas:3141-26-2

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Baoji Guokang Healthchem co.,ltd

Our 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

Pharmaceutical Intermediates, 3,4-Dibromothiophene acid CAS:3141-26-2

Cas:3141-26-2

Min.Order:1 Kilogram

FOB Price: $110.0 / 124.0

Type:Trading Company

inquiry

Qingdao Beluga Import and Export Co., LTD

3,4-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

3,4-Dibromothiophene CAS:3141-26-2

Cas:3141-26-2

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Shandong Hanjiang Chemical Co., Ltd.

Hello, 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

3,4-Dibromothiophene

Cas:3141-26-2

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Henan Wentao Chemical Product Co., Ltd.

Henan 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

CAS NO.:3141-26-2

Cas:3141-26-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hebei Mojin Biotechnology Co.,Ltd

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

3,4-Dibromothiophene cas:3141-26-2

Cas:3141-26-2

Min.Order:25 Gram

FOB Price: $90.0 / 100.0

Type:Trading Company

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Xiamen Hisunny Chemical Co.,Ltd

Best quality & Attractive price & Professional service; Trial & Pilot & Commercial Hisunny Chemical is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality intermediates, specia

3,4-Dibromothiophene

Cas:3141-26-2

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Hangzhou Keyingchem Co.,Ltd

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

3,4-Dibromothiophene

Cas:3141-26-2

Min.Order:0 Metric Ton

Negotiable

Type:Lab/Research institutions

inquiry

Afine Chemicals Limited

Company 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

3,4-DIBROMOTHIOPHENE

Cas:3141-26-2

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Hangzhou J&H Chemical Co., Ltd.

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

3,4-Dibromothiophene

Cas:3141-26-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Shaanxi Cuicheng Biomedical Technology Co., Ltd.

Why 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

3,4-Dibromothiophene

Cas:3141-26-2

Min.Order:1 Gram

Negotiable

Type:Other

inquiry

Zibo Hangyu Biotechnology Development Co., Ltd

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

High quality 3,4-Dibromothiophene

Cas:3141-26-2

Min.Order:10 Gram

FOB Price: $100.0

Type:Lab/Research institutions

inquiry

Hangzhou Lingrui Chemical Co.,Ltd.

3,4-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

3,4-Dibromothiophene

Cas:3141-26-2

Min.Order:1 Gram

Negotiable

Type:Other

inquiry

Zibo Dorne chemical technology co. LTD

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,

3,4-Dibromothiophene

Cas:3141-26-2

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Siwei Development Group Ltd.

Product 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

Best Quality 3,4-Dibromothiophene

Cas:3141-26-2

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Xiamen Jenny Chemical Technology Co., Ltd.

GMP 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,

3,4-Dibromothiophene

Cas:3141-26-2

Min.Order:1 Milligram

Negotiable

Type:Trading Company

inquiry

EAST CHEMSOURCES LIMITED

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

3,4-Dibromothiophene

Cas:3141-26-2

Min.Order:1 Kilogram

FOB Price: $18.0 / 20.0

Type:Trading Company

inquiry

Synthetic route

Tetrabromothiophene
3958-03-0

Tetrabromothiophene

3,4-dibromothiophene
3141-26-2

3,4-dibromothiophene

Conditions
ConditionsYield
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%
C4Br2Li2S

C4Br2Li2S

Tetrabromothiophene
3958-03-0

Tetrabromothiophene

3,4-dibromothiophene
3141-26-2

3,4-dibromothiophene

Conditions
ConditionsYield
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%
2,3,4-tribromothiophene
3141-25-1

2,3,4-tribromothiophene

A

3-Bromothiophene
872-31-1

3-Bromothiophene

B

3,4-dibromothiophene
3141-26-2

3,4-dibromothiophene

Conditions
ConditionsYield
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%
2-bromothiophene
1003-09-4

2-bromothiophene

A

3-Bromothiophene
872-31-1

3-Bromothiophene

B

3,4-dibromothiophene
3141-26-2

3,4-dibromothiophene

Conditions
ConditionsYield
With sodium amide; ferric nitrate In ammoniaA 72%
B n/a
2-bromothiophene
1003-09-4

2-bromothiophene

A

3,4-dibromothiophene
3141-26-2

3,4-dibromothiophene

B

2,3,5-tribromothiophene
3141-24-0

2,3,5-tribromothiophene

C

2,3,4-tribromothiophene
3141-25-1

2,3,4-tribromothiophene

D

Tetrabromothiophene
3958-03-0

Tetrabromothiophene

Conditions
ConditionsYield
With potassium tert-butylate; sodium amide In ammonia for 3h; Further byproducts given;A 65%
B n/a
C n/a
D n/a
2,3,4-tribromothiophene
3141-25-1

2,3,4-tribromothiophene

3,4-dibromothiophene
3141-26-2

3,4-dibromothiophene

Conditions
ConditionsYield
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;
thiophene
188290-36-0

thiophene

A

3-Bromothiophene
872-31-1

3-Bromothiophene

B

3,4-dibromothiophene
3141-26-2

3,4-dibromothiophene

Conditions
ConditionsYield
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
39129-54-9

3,4-dibromo-2,5-dimethylthiophene

A

3,4-dibromothiophene
3141-26-2

3,4-dibromothiophene

B

3,4-dibromo-2,5-dimethylthiophene-1,1-dioxide
70061-39-1

3,4-dibromo-2,5-dimethylthiophene-1,1-dioxide

C

C6H2Br2O3S
508170-24-9

C6H2Br2O3S

D

3,4-Dibromo-2,5-dimethylthiophene S-monoxide
301677-76-9

3,4-Dibromo-2,5-dimethylthiophene S-monoxide

Conditions
ConditionsYield
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%
Tetrabromothiophene
3958-03-0

Tetrabromothiophene

A

3,4-dibromothiophene
3141-26-2

3,4-dibromothiophene

B

2,3,4-tribromothiophene
3141-25-1

2,3,4-tribromothiophene

Conditions
ConditionsYield
With methyl bromide; diethyl ether; magnesium Behandeln des Reaktionsprodukts mit Wasser;
2,5-dibromothiophen
3141-27-3

2,5-dibromothiophen

A

thiophene
188290-36-0

thiophene

B

2-bromothiophene
1003-09-4

2-bromothiophene

C

3-Bromothiophene
872-31-1

3-Bromothiophene

D

3,4-dibromothiophene
3141-26-2

3,4-dibromothiophene

Conditions
ConditionsYield
With tetramethylammonium perchlorate In N,N-dimethyl-formamide Product distribution; Mechanism; controlled-potential electrolysis at reticulated vitreous carbon; further reagents;
thiophene
188290-36-0

thiophene

3,4-dibromothiophene
3141-26-2

3,4-dibromothiophene

Conditions
ConditionsYield
With bromine; acetic acid; zinc Yield given. Multistep reaction;
Tetrabromothiophene
3958-03-0

Tetrabromothiophene

acetic acid
64-19-7

acetic acid

zinc

zinc

A

3-Bromothiophene
872-31-1

3-Bromothiophene

B

3,4-dibromothiophene
3141-26-2

3,4-dibromothiophene

formic acid
64-18-6

formic acid

3,4-dibromo-thiophene-2-carboxylic acid-(3,4-dibromo-[2]thienylmethyl ester)
854626-59-8

3,4-dibromo-thiophene-2-carboxylic acid-(3,4-dibromo-[2]thienylmethyl ester)

aqueous KOH-solution

aqueous KOH-solution

A

3,4-dibromothiophene
3141-26-2

3,4-dibromothiophene

B

(3,4-dibromo-thiophen-2-yl)-methanol
38319-52-7

(3,4-dibromo-thiophen-2-yl)-methanol

C

3,4-dibromo-2-thiophenecarboxylic acid
7311-66-2

3,4-dibromo-2-thiophenecarboxylic acid

3,4-dibromo-2,5-thiophenedicarboxaldehyde
25373-20-0

3,4-dibromo-2,5-thiophenedicarboxaldehyde

aqueous KOH

aqueous KOH

A

3,4-dibromothiophene
3141-26-2

3,4-dibromothiophene

B

(3,4-dibromo-thiophen-2-yl)-methanol
38319-52-7

(3,4-dibromo-thiophen-2-yl)-methanol

C

formic acid
64-18-6

formic acid

D

3,4-dibromo-2-thiophenecarboxylic acid
7311-66-2

3,4-dibromo-2-thiophenecarboxylic acid

3,4-dibromothiophene
3141-26-2

3,4-dibromothiophene

octylmagnesium bromide
17049-49-9

octylmagnesium bromide

3,4-dioctylthiophene
161746-06-1

3,4-dioctylthiophene

Conditions
ConditionsYield
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
3141-26-2

3,4-dibromothiophene

tetradecanoyl chloride
112-64-1

tetradecanoyl chloride

(3,4-dibromothien-2-yl)-tridecyl-ketone
1190224-40-8

(3,4-dibromothien-2-yl)-tridecyl-ketone

Conditions
ConditionsYield
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
380430-53-5

2-(ethoxycarbonyl)phenylboronic acid

3,4-dibromothiophene
3141-26-2

3,4-dibromothiophene

diethyl 2,2'-(thiophene-3,4-diyl)dibenzoate

diethyl 2,2'-(thiophene-3,4-diyl)dibenzoate

Conditions
ConditionsYield
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
3141-26-2

3,4-dibromothiophene

chloro-trimethyl-silane
75-77-4

chloro-trimethyl-silane

3,4-dibromothiophene-2,5-diyl-bis(trimethylsilane)
175658-90-9

3,4-dibromothiophene-2,5-diyl-bis(trimethylsilane)

Conditions
ConditionsYield
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
3141-26-2

3,4-dibromothiophene

4-d1-3-bromothiophene
51027-36-2

4-d1-3-bromothiophene

Conditions
ConditionsYield
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
3141-26-2

3,4-dibromothiophene

bis(μ-[2-(dimethylamino)ethanolato-N,O:O]tetramethyldiindium

bis(μ-[2-(dimethylamino)ethanolato-N,O:O]tetramethyldiindium

4,4'-dimethyl-3,3'-bithiophene

4,4'-dimethyl-3,3'-bithiophene

Conditions
ConditionsYield
bis-triphenylphosphine-palladium(II) chloride In benzene at 80℃; for 24h;99%
3,4-dibromothiophene
3141-26-2

3,4-dibromothiophene

acetyl chloride
75-36-5

acetyl chloride

1-(3,4-dibromothiophen-2-yl)ethanone
57681-57-9

1-(3,4-dibromothiophen-2-yl)ethanone

Conditions
ConditionsYield
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
3141-26-2

3,4-dibromothiophene

n-hexylmagnesium bromide
3761-92-0

n-hexylmagnesium bromide

3,4-di-n-hexylthiophene
122107-04-4

3,4-di-n-hexylthiophene

Conditions
ConditionsYield
With 1,3-bis[(diphenylphosphino)propane]dichloronickel(II) In diethyl ether98%
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
3141-26-2

3,4-dibromothiophene

5,5-dimethyl-5H-dibenzo[b,d]stannole
5565-85-5

5,5-dimethyl-5H-dibenzo[b,d]stannole

phenanthro[9,10-c]thiophene
235-95-0

phenanthro[9,10-c]thiophene

Conditions
ConditionsYield
With bis(tri-t-butylphosphine)palladium(0) In tetrahydrofuran at 60℃; for 12h;98%
3,4-dibromothiophene
3141-26-2

3,4-dibromothiophene

chloroformic acid ethyl ester
541-41-3

chloroformic acid ethyl ester

4.-brorno-thiophene-3-carboxylic acid ethyl ester
224449-33-6

4.-brorno-thiophene-3-carboxylic acid ethyl ester

Conditions
ConditionsYield
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℃;
3,4-dibromothiophene
3141-26-2

3,4-dibromothiophene

chloroacetyl chloride
79-04-9

chloroacetyl chloride

DIP-3.18

DIP-3.18

Conditions
ConditionsYield
97%
With aluminium trichloride In carbon disulfide for 1h; Heating;
With aluminum (III) chloride In carbon disulfide Friedel Crafts acylation;
3,4-dibromothiophene
3141-26-2

3,4-dibromothiophene

triisopropylsilyl chloride
13154-24-0

triisopropylsilyl chloride

3,4-dibromo-2,5-bis(triisopropylsilyl)thiophene

3,4-dibromo-2,5-bis(triisopropylsilyl)thiophene

Conditions
ConditionsYield
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
3141-26-2

3,4-dibromothiophene

2-Bromoacetyl bromide
598-21-0

2-Bromoacetyl bromide

2-bromo-1-(3,4-dibromothiophen-2-yl)ethanone
63722-99-6

2-bromo-1-(3,4-dibromothiophen-2-yl)ethanone

Conditions
ConditionsYield
With aluminum (III) chloride In carbon disulfide at 20℃; Friedel Crafts acylation; Reflux;96%
3,4-dibromothiophene
3141-26-2

3,4-dibromothiophene

phenylboronic acid
98-80-6

phenylboronic acid

3-bromo-4-phenylthiophene
23062-41-1

3-bromo-4-phenylthiophene

Conditions
ConditionsYield
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
3141-26-2

3,4-dibromothiophene

methanol
67-56-1

methanol

A

2,3-dimethoxythiophene
51792-34-8

2,3-dimethoxythiophene

B

3-bromo-4-methoxythiophene
110545-69-2

3-bromo-4-methoxythiophene

Conditions
ConditionsYield
With sodium; potassium iodide; copper(II) oxide at 97℃; for 72h; Inert atmosphere;A 96%
B n/a
3,4-dibromothiophene
3141-26-2

3,4-dibromothiophene

dimethylsulfide
75-18-3

dimethylsulfide

3-bromo-4-(methylthio)thiophene
58414-59-8

3-bromo-4-(methylthio)thiophene

Conditions
ConditionsYield
With n-butyllithium In diethyl ether96%
3,4-dibromothiophene
3141-26-2

3,4-dibromothiophene

1-Bromotetradecane
112-71-0

1-Bromotetradecane

C32H60S

C32H60S

Conditions
ConditionsYield
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
3141-26-2

3,4-dibromothiophene

dibromo-3,4 nitro-2 thiophene
35633-91-1

dibromo-3,4 nitro-2 thiophene

Conditions
ConditionsYield
With sulfuric acid; nitric acid In chloroform at 50℃; for 24h;95%
With nitric acid; acetic anhydride
With nitric acid; acetic anhydride; acetic acid
3,4-dibromothiophene
3141-26-2

3,4-dibromothiophene

benzylmagnesium chloride
6921-34-2

benzylmagnesium chloride

3,4-dibenzylthiophene
74714-05-9

3,4-dibenzylthiophene

Conditions
ConditionsYield
1,3-bis[(diphenylphosphino)propane]dichloronickel(II)95%
dichloro[propane-1,3-diylbis(diphenylphosphane)]nickel(II) In diethyl ether for 20h; Heating;95 % Chromat.
3,4-dibromothiophene
3141-26-2

3,4-dibromothiophene

acrylic acid n-butyl ester
141-32-2

acrylic acid n-butyl ester

(E)-3-[4-((E)-2-Butoxycarbonyl-vinyl)-thiophen-3-yl]-acrylic acid butyl ester

(E)-3-[4-((E)-2-Butoxycarbonyl-vinyl)-thiophen-3-yl]-acrylic acid butyl ester

Conditions
ConditionsYield
With potassium carbonate; allylpalladium(II) chloride dimer; Tedicyp In N,N-dimethyl-formamide at 140℃; for 24h; Heck reaction;95%
3,4-dibromothiophene
3141-26-2

3,4-dibromothiophene

(2-octyldodecyl)zinc(II) bromide

(2-octyldodecyl)zinc(II) bromide

3,4-bis(2-octyldodecyl)thiophene

3,4-bis(2-octyldodecyl)thiophene

Conditions
ConditionsYield
With [1,1'-bis(diphenylphosphino)-ferrocene]palladium(II) chloride-dichlormethane complex In N,N-dimethyl acetamide at 80℃; for 12h;95%
3,4-dibromothiophene
3141-26-2

3,4-dibromothiophene

n-butyl magnesium bromide
693-03-8

n-butyl magnesium bromide

formaldehyd
50-00-0

formaldehyd

3,4-dibutyl-5-(hydroxymethyl)thiophene
1022089-65-1

3,4-dibutyl-5-(hydroxymethyl)thiophene

Conditions
ConditionsYield
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
3141-26-2

3,4-dibromothiophene

P-toluenesulfonyl cyanide
19158-51-1

P-toluenesulfonyl cyanide

4-bromothiophene-3-carbonitrile
18895-10-8

4-bromothiophene-3-carbonitrile

Conditions
ConditionsYield
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%
3,4-dibromothiophene
3141-26-2

3,4-dibromothiophene

2-ethylhexylmagnesium bromide

2-ethylhexylmagnesium bromide

3,4-bis(2-ethylhexyl)thiophene

3,4-bis(2-ethylhexyl)thiophene

Conditions
ConditionsYield
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
3141-26-2

3,4-dibromothiophene

thiophene-3,4-diamine
78637-85-1

thiophene-3,4-diamine

Conditions
ConditionsYield
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
3141-26-2

3,4-dibromothiophene

3,4-dichlorothiophene
17249-76-2

3,4-dichlorothiophene

Conditions
ConditionsYield
With copper(l) chloride In N,N-dimethyl-formamide for 24h; Reflux; Inert atmosphere;94%
3,4-dibromothiophene
3141-26-2

3,4-dibromothiophene

Dimethyldisulphide
624-92-0

Dimethyldisulphide

3-bromo-4-(methylthio)thiophene
58414-59-8

3-bromo-4-(methylthio)thiophene

Conditions
ConditionsYield
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
3141-26-2

3,4-dibromothiophene

4-butylphenylboronic acid
145240-28-4

4-butylphenylboronic acid

3,4-bis(4-butylphenyl)thiophene

3,4-bis(4-butylphenyl)thiophene

Conditions
ConditionsYield
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%
3,4-dibromothiophene
3141-26-2

3,4-dibromothiophene

sodium ethanolate
141-52-6

sodium ethanolate

3,4-diethoxythiophene
122721-91-9

3,4-diethoxythiophene

Conditions
ConditionsYield
With potassium iodide; copper(II) oxide In ethanol at 120℃; under 3000.3 Torr; for 6h; Temperature; Inert atmosphere; Autoclave;92.1%
3,4-dibromothiophene
3141-26-2

3,4-dibromothiophene

benzoyl chloride
98-88-4

benzoyl chloride

2-benzoyl-3,4-dibromothiophene

2-benzoyl-3,4-dibromothiophene

Conditions
ConditionsYield
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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