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Dayang Chem (Hangzhou) Co.,Ltd.

As a leading manufacturer and supplier of chemicals in China, DayangChem not only supply popular chemicals, but also DayangChem's R&D center offer custom synthesis services. DayangChem can provide different quantities of custom synthesis ch

4,8-Dihydrobenzo[1,2-b:4,5-b']dithiophen-4,8-dione

Cas:32281-36-0

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

inquiry

Xi'an Xszo Chem Co., Ltd.

1. Factory price and high quality must be guaranteed, base on 8 years of production and R&D experience2. Free samples will be provided,ensure specifications and quality are right for customer3. Customers will receive the most professional technical s

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

Benzo[1,2-b:4,5-b']dithiophene-4,8-dione

Cas:32281-36-0

Min.Order:5 Kiloliter

FOB Price: $1.2 / 5.0

Type:Manufacturers

inquiry

Henan Tianfu Chemical Co., Ltd.

Benzo[1,2-b:4,5-b']dithiophene-4,8-dione Basic information Product Name: Benzo[1,2-b:4,5-b']dithiophene-4,8-dione Synonyms: Benzo[1,2-b:4,5-b']dithiophene-4,8-dione;4,8-Dihyd

Benzo[1,2-b:4,5-b']dithiophene-4,8-dione

Cas:32281-36-0

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

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

Factory direct supply CAS 32281-36-0 with best quality

Cas:32281-36-0

Min.Order:1 Kilogram

FOB Price: $139.0 / 210.0

Type:Trading Company

inquiry

Henan Sinotech Import&Export Corporation

Product Name benzo[1,2-b:4,5-b]dithiophene-4,8-dione Structural formula CAS No. 32281-36-0 Appearance:White powder Storage:Store in cool and dry place, away from sun light. Package:25kg/drum Application:OLED

benzo[1,2-b:4,5-b']bisthiophene-4,8-dione

Cas:32281-36-0

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Other

inquiry

Qingdao Beluga Import and Export Co., LTD

Benzo[1,2-b:4,5-b']dithiophene-4,8-dione CAS:32281-36-0 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

Benzo[1,2-b:4,5-b']dithiophene-4,8-dione CAS:32281-36-0

Cas:32281-36-0

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

Benzo[1,2-b:4,5-b']dithiophene-4,8-dione

Cas:32281-36-0

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.:32281-36-0

Cas:32281-36-0

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hebei Miheng Trading Co., Ltd.

Benzo[1,2-b:4,5-b']dithiophene-4,8-dione CAS 32281-36-0 Our advantage 1.Top quality: Using high quality material and establishing a strict quality control system,assigning specific persons in charge of each part of production,from raw mat

Benzo[1,2-b:4,5-b']dithiophene-4,8-dione CAS 32281-36-0

Cas:32281-36-0

Min.Order:1 Kilogram

FOB Price: $10.0 / 50.0

Type:Trading Company

inquiry

SHANGHAI T&W PHARMACEUTICAL CO., LTD.

A substitute for perfluorooctanoic acid, mainly used as a surfactant, dispersant, additive, etc Appearance:White solid or Colorless liquid Purity:99.3 % We will ship the goods in a timely manner as required We can provide relevant documents acc

Benzo[1,2-b:4,5-b']dithiophene-4,8-dione

Cas:32281-36-0

Min.Order:4 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Hefei Zhaobo Technology Co., Ltd.

Benzo[1,2-b:4,5-b']dithiophene-4,8-dione CAS 32281-36-0 Description Purity: 99% Min Application: Intermediates Appearance: Powder Package: Bag Delivery: 3-5days Our Advantage & Service 1.Top quality: Using high quality material

Benzo[1,2-b:4,5-b']dithiophene-4,8-dione CAS 32281-36-0

Cas:32281-36-0

Min.Order:1 Kilogram

FOB Price: $50.0 / 100.0

Type:Trading Company

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

4.8-Dihydrobenzo[1,2-b:4,5-b']dithiophen4,8-dione

Cas:32281-36-0

Min.Order:0

Negotiable

Type:Lab/Research institutions

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

4,8-Dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

Cas:32281-36-0

Min.Order:10 Gram

FOB Price: $100.0

Type:Lab/Research institutions

inquiry

YUNBIO TECH CO.,LTD

Our Strength: -Flexible: We work in small teams with rapid communication channels. Respond quickly and efficiently to customer and market needs. -Innovative: We are focusing on the development of new products and keep close relationships with

HANGZHOU YUNUO CHEMICAL CO.,LTD

Superior quality, moderate price & quick delivery. Appearance:white crystal powder Storage:Stored in cool, dry and ventilation place; Away from fire and heat Package:10g/bag,or as your request Application:Used as Pharmaceutical Intermediates Tr

Benzo[1,2-b:4,5-b']dithiophene-4,8-dione

Cas:32281-36-0

Min.Order:1 Gram

Negotiable

Type:Trading Company

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,

Benzo[1,2-b:4,5-b']dithiophene-4,8-dione

Cas:32281-36-0

Min.Order:1 Milligram

Negotiable

Type:Trading Company

inquiry

Shanghai Minstar Chemical Co., Ltd

Product Name: Benzo[1,2-b:4,5-b']dithiophene-4,8-dione Synonyms: Benzo[1,2-b:4,5-b']dithiophene-4,8-dione;4,8-Dihydrobenzo[1,2-b:4,5-b']dithiophen-4,8-dione;8-Dihydrobenzo[1,2-b:4,5-b']dithiophen-4,8-dione;NSC 149690;benzo[1,2-b

Benzo[1,2-b:4,5-b']dithiophene-4,8-dione

Cas:32281-36-0

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

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

TIANFUCHEM--High purity Benzo[1,2-b:4,5-b']dithiophene-4,8-dione factory price

Cas:32281-36-0

Min.Order:1 Kilogram

FOB Price: $18.0 / 20.0

Type:Trading Company

inquiry

Hangzhou Huarong Pharm Co., Ltd.

We Huarong Pharm can provide Customized Synthesis & Process R&D & APIs and intermediates Production & Quality Research & Registration Application, especially our GMP validation service which complies with SFDA, FDA, WHO and EU EMPA. O

Benzo[1,2-b:4,5-b']dithiophene-4,8-dione

Cas:32281-36-0

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Shandong Mopai Biotechnology Co., LTD

Shandong Mopai Biotechnology 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 chemicals. W

Benzo[1,2-b:4,5-b']dithiophene-4,8-dione

Cas:32281-36-0

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

KAISA GROUP INC

1.Applied in food field.it can improve the immune system and prolong life. 2.Appliedin cosmetic field.it can improve the skin care. 3.Applied in pharmaceutical field.it can treat various dieases. 4.Our product quality assurance will make our customer

TIANFUCHEM--High purity Benzo[1,2-b:4,5-b']dithiophene-4,8-dione factory price

Cas:32281-36-0

Min.Order:1 Metric Ton

FOB Price: $1.5

Type:Trading Company

inquiry

Hunan chemfish Pharmaceutical co.,Ltd

Appearance:95%+ Package:R&D,Pilot run Transportation:per client require Port:Express ,Air, Sea

Benzo[1,2-b:4,5-b']dithiophene-4,8-dione

Cas:32281-36-0

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Triumph International Development Limilted

Triumph has the complete production of G- KG - MT service chain,we can make the new technology into productivity quickly in the research and development of new products. Main Business Custom Synthesis:

Benzo[1,2-b:4,5-b']dithiophene-4,8-dione

Cas:32281-36-0

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Suzhou Health Chemicals Co., Ltd.

High 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

4,8-Dihydrobenzo[1,2-b:4,5-b']dithiophen-4,8-dione

Cas:32281-36-0

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Bluecrystal chem-union

We are a Union of chemistry in China, consists of chemists,engineers, laboratories,factories in China. We organize surplus capacity of R&D and production as well as custom synthesis for chemical products and chemical business project. We are supp

TIANFUCHEM--High purity Benzo[1,2-b:4,5-b']dithiophene-4,8-dione factory price

Cas:32281-36-0

Min.Order:1 Metric Ton

FOB Price: $1.0

Type:Trading Company

inquiry

Hebei Mojin Biotechnology Co.,Ltd

1, High quality with competitive price:2, Fast and safe delivery3.Excellent pre-sales and after-sales service4. Well-trained and professional technologist and sales with rich experience in the field for 5-10 yearsAppearance:see detailed specification

Benzo[1,2-b:4,5-b']dithiophene-4,8-dione

Cas:32281-36-0

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Win-Win chemical Co.Ltd

Stock products, own laboratory Package:Grams, Kilograms Application:For R&D Transportation:According to customer request Port:Shanghai

Thieno[2,3-f][1]benzothiole-4,8-dione cas no. 32281-36-0 98%

Cas:32281-36-0

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

GIHI CHEMICALS CO.,LIMITED

Lower 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

4,8-Dihydrobenzo[1,2-b:4,5-b']dithiophen-4,8-dione

Cas:32281-36-0

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Kono Chem Co.,Ltd

high 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

benzo[1,2-b:4,5-b']bisthiophene-4,8-dione

Cas:32281-36-0

Min.Order:0

Negotiable

Type:Other

inquiry

Synthetic route

3-thiophenecarboxylic acid,N,N-diethylamide
73540-75-7

3-thiophenecarboxylic acid,N,N-diethylamide

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

Conditions
ConditionsYield
With n-butyllithium In tetrahydrofuran at 0 - 20℃; Temperature; Inert atmosphere;86.1%
With n-butyllithium In tetrahydrofuran at 20℃; for 1h; Inert atmosphere; Cooling with ice;80%
With n-butyllithium In tetrahydrofuran at 0℃;80%
3-thiophene carboxaldehyde
498-62-4

3-thiophene carboxaldehyde

3-thiophenecarboxylic acid,N,N-diethylamide
73540-75-7

3-thiophenecarboxylic acid,N,N-diethylamide

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

Conditions
ConditionsYield
With N,N,N,N,-tetramethylethylenediamine; sec.-butyllithium In diethyl ether 1.) -78 deg C, 1 h, 2.) -78 deg C -> RT, 12 h;77%
3-thiophene carboxylic acid chloride
41507-35-1

3-thiophene carboxylic acid chloride

3-thiophenecarboxylic acid,N,N-diethylamide
73540-75-7

3-thiophenecarboxylic acid,N,N-diethylamide

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

Conditions
ConditionsYield
With n-butyllithium In tetrahydrofuran at -30 - 20℃; Inert atmosphere;77%
N,N-dimethyl-3-thiophene carboxamide
59906-37-5

N,N-dimethyl-3-thiophene carboxamide

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

Conditions
ConditionsYield
With n-butyllithium In diethyl ether; hexane for 12h;56%
With n-butyllithium In hexane; water; benzene
2,3-thiophenedicarboxylic acid anhydride
6007-83-6

2,3-thiophenedicarboxylic acid anhydride

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

Conditions
ConditionsYield
In neat (no solvent) at 270℃; for 2.5h;24%
2,3-thiophenedicarboxylic acid anhydride
6007-83-6

2,3-thiophenedicarboxylic acid anhydride

A

4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one
25796-77-4

4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

B

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

Conditions
ConditionsYield
at 500℃; under 1 - 5 Torr;A 1.2%
B n/a
1H,3H-thieno[3,4-c]furan-1,3-dione
6007-85-8

1H,3H-thieno[3,4-c]furan-1,3-dione

A

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

B

4,8-Dihydrobenzo<1,2-b:4,5-c'>dithiophen-4,8-dion
33527-22-9

4,8-Dihydrobenzo<1,2-b:4,5-c'>dithiophen-4,8-dion

Conditions
ConditionsYield
at 470℃; for 0.00833333h;A 0.12%
B 0.36%
n-butyllithium
109-72-8, 29786-93-4

n-butyllithium

3-thiophenecarboxylic acid,N,N-diethylamide
73540-75-7

3-thiophenecarboxylic acid,N,N-diethylamide

A

1-(3-thienyl)-1-pentanone
90534-16-0

1-(3-thienyl)-1-pentanone

B

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

C

N,N-diethyl-2-(1,1,1,3,3-pentafluoro-2-hydroxypropan-2-yl)thiophene-3-carboxamide
148527-59-7

N,N-diethyl-2-(1,1,1,3,3-pentafluoro-2-hydroxypropan-2-yl)thiophene-3-carboxamide

Conditions
ConditionsYield
With N,N,N,N,-tetramethylethylenediamine; foscarnet 1.) hexane, ether, -78 deg C, 1.5 h, 2.) hexane, ether, a) -78 deg C, 7 h, b) RT, 12 h; Yield given. Multistep reaction. Yields of byproduct given;
1,1,1,3,3-pentafluoro-2-propanone
431-71-0

1,1,1,3,3-pentafluoro-2-propanone

3-thiophenecarboxylic acid,N,N-diethylamide
73540-75-7

3-thiophenecarboxylic acid,N,N-diethylamide

A

1-(3-thienyl)-1-pentanone
90534-16-0

1-(3-thienyl)-1-pentanone

B

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

C

N,N-diethyl-2-(1,1,1,3,3-pentafluoro-2-hydroxypropan-2-yl)thiophene-3-carboxamide
148527-59-7

N,N-diethyl-2-(1,1,1,3,3-pentafluoro-2-hydroxypropan-2-yl)thiophene-3-carboxamide

Conditions
ConditionsYield
With n-butyllithium; N,N,N,N,-tetramethylethylenediamine 1.) hexane, ether, -78 deg C, 1.5 h, 2.) hexane, ether, a) -78 deg C, 7 h, b) RT, 12 h; Yield given. Multistep reaction. Yields of byproduct given;
3-thiophenecarboxylic acid,N,N-diethylamide
73540-75-7

3-thiophenecarboxylic acid,N,N-diethylamide

A

1-(3-thienyl)-1-pentanone
90534-16-0

1-(3-thienyl)-1-pentanone

B

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

C

N,N-diethyl-2-(1,1,1,3,3-pentafluoro-2-hydroxypropan-2-yl)thiophene-3-carboxamide
148527-59-7

N,N-diethyl-2-(1,1,1,3,3-pentafluoro-2-hydroxypropan-2-yl)thiophene-3-carboxamide

Conditions
ConditionsYield
With n-butyllithium; N,N,N,N,-tetramethylethylenediamine; foscarnet 1.) hexane, ether, -78 deg C, 1.5 h, 2.) hexane, ether, a) -78 deg C, 7 h, b) RT, 12 h; Yield given. Multistep reaction. Yields of byproduct given;
benzo[1,2-b:4,5-b']dithiophene
267-65-2

benzo[1,2-b:4,5-b']dithiophene

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

Conditions
ConditionsYield
With sodium dithionite; tetrabutylammomium bromide In water for 0.166667h; Inert atmosphere;
4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

dimethyl 4,5-bis(methylthio)-1,3-dithiole phosphonate ester
138519-02-5

dimethyl 4,5-bis(methylthio)-1,3-dithiole phosphonate ester

8-(4,5-bis(methylthio)-1,3-dithiol-2-ylidene)benzo[1,2-b:4,5-b']dithiophen-4(8H)-one

8-(4,5-bis(methylthio)-1,3-dithiol-2-ylidene)benzo[1,2-b:4,5-b']dithiophen-4(8H)-one

Conditions
ConditionsYield
Stage #1: dimethyl 4,5-bis(methylthio)-1,3-dithiole phosphonate ester With n-butyllithium In tetrahydrofuran at -78℃; for 1.5h;
Stage #2: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione In tetrahydrofuran at -78 - 20℃;
99%
4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

trimethyl orthoformate
149-73-5

trimethyl orthoformate

4,4,8,8-tetramethoxy-4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene

4,4,8,8-tetramethoxy-4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene

Conditions
ConditionsYield
With triethylamine In methanol for 18.1667h; Inert atmosphere; Reflux;99%
4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

octylmagnesium bromide
17049-49-9

octylmagnesium bromide

8-hydroxy-8-octylbenzo[1,2-b:4,5-b']dithiophen-4-one

8-hydroxy-8-octylbenzo[1,2-b:4,5-b']dithiophen-4-one

Conditions
ConditionsYield
In toluene at 0 - 20℃;98.7%
In toluene at 0 - 20℃; Inert atmosphere;98.7%
In toluene
4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

2-bromo-5-(2-ethylhexyl)thiophene
925899-21-4

2-bromo-5-(2-ethylhexyl)thiophene

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4-hydroxy-4-(2-(2-ethylhexyl)thiophen)-8-one

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4-hydroxy-4-(2-(2-ethylhexyl)thiophen)-8-one

Conditions
ConditionsYield
Stage #1: 2-bromo-5-(2-ethylhexyl)thiophene With magnesium In tetrahydrofuran for 5h; Reflux;
Stage #2: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione In toluene at 20℃; for 1h;
97.6%
Stage #1: 2-bromo-5-(2-ethylhexyl)thiophene With iodine; magnesium In tetrahydrofuran for 3h; Inert atmosphere; Reflux;
Stage #2: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione In toluene at 20℃; for 30h; Inert atmosphere;
65%
4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

benzo[1,2-b:4,5-b']dithiophene-4,8-dione dioxime
1430594-30-1

benzo[1,2-b:4,5-b']dithiophene-4,8-dione dioxime

Conditions
ConditionsYield
With pyridine; hydroxylamine hydrochloride Reflux; Inert atmosphere;97%
4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

2,6-dibromobenzo[1,2-b:4,5-b']dithiophene-4,8-phenylhydrazine
196491-93-7

2,6-dibromobenzo[1,2-b:4,5-b']dithiophene-4,8-phenylhydrazine

Conditions
ConditionsYield
With bromine at 20℃; for 1.5h; Reagent/catalyst; Temperature;96%
4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

dimethyl sulfate
77-78-1

dimethyl sulfate

4,8-Dimethoxybenzo<1,2-b:4,5-b'>dithiophene
85903-02-2

4,8-Dimethoxybenzo<1,2-b:4,5-b'>dithiophene

Conditions
ConditionsYield
Stage #1: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione With sodium tetrahydroborate In ethanol; water for 0.666667h; Inert atmosphere; Schlenk technique;
Stage #2: With potassium hydroxide In ethanol; water for 0.5h; Inert atmosphere; Schlenk technique; Reflux;
Stage #3: dimethyl sulfate In ethanol; water for 8h; Inert atmosphere; Schlenk technique; Reflux;
96%
Stage #1: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione With sodium tetrahydroborate In ethanol; water for 1h;
Stage #2: With potassium hydroxide In ethanol; water for 0.5h;
Stage #3: dimethyl sulfate In ethanol; water for 64h;
5.3 g
4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

2,6-bis(trimethyltin)-4,8-di(3,7-dimethyl)octyloxybenzo[1,2-b;3,4-b′]dithiophene

2,6-bis(trimethyltin)-4,8-di(3,7-dimethyl)octyloxybenzo[1,2-b;3,4-b′]dithiophene

Conditions
ConditionsYield
Stage #1: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione With sodium hydroxide; zinc In water for 1h; Inert atmosphere; Reflux;
Stage #2: 1-bromo-3,7-dimethyloctane With tetrabutylammomium bromide In water for 2h; Inert atmosphere; Reflux;
95.5%
4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

n-decyl magnesium bromide
17049-50-2

n-decyl magnesium bromide

C20H26O2S2

C20H26O2S2

Conditions
ConditionsYield
In toluene at 0 - 20℃; Inert atmosphere;93.6%
4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

4,8-dihydroxybenzo[1,2-b:4,5-b']dithiophene
1357156-35-4

4,8-dihydroxybenzo[1,2-b:4,5-b']dithiophene

Conditions
ConditionsYield
With sodium tetrahydroborate In ethanol at 90℃; for 12h; Cooling with ice; Inert atmosphere;92.6%
With sodium tetrahydroborate; ethanol at 0 - 85℃; Inert atmosphere;91%
With sodium tetrahydroborate; ethanol at 0 - 85℃; Inert atmosphere;91%
4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

n-octyne
629-05-0

n-octyne

4,8-bis(oct-1-ynyl)benzo[1,2-b:4,5-b']dithiophene

4,8-bis(oct-1-ynyl)benzo[1,2-b:4,5-b']dithiophene

Conditions
ConditionsYield
Stage #1: n-octyne With isopropylmagnesium chloride at 20 - 60℃;
Stage #2: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione With hydrogenchloride; tin(ll) chloride In water at 20 - 65℃;
90%
Stage #1: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione; n-octyne With isopropylmagnesium bromide
Stage #2: With tin(ll) chloride
Stage #1: n-octyne With isopropylmagnesium chloride In tetrahydrofuran at 0 - 60℃; for 1.66667h;
Stage #2: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione In tetrahydrofuran at 20 - 60℃; for 2h;
Stage #3: With hydrogenchloride; tin(ll) chloride In tetrahydrofuran at 20 - 65℃; for 1h;
4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

1,8-dibromonaphthalene
17135-74-9

1,8-dibromonaphthalene

C30H12O2S2

C30H12O2S2

Conditions
ConditionsYield
With di-tert-butyl(methyl)phosphonium tetrafluoroborate salt; palladium diacetate; potassium carbonate In N,N-dimethyl acetamide at 100℃; for 20h; Inert atmosphere;90%
4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

1-bromo-octane
111-83-1

1-bromo-octane

4,8-bis(octyloxy)benzo[1,2-b:4,5-b']dithiophene
1098102-94-3

4,8-bis(octyloxy)benzo[1,2-b:4,5-b']dithiophene

Conditions
ConditionsYield
Stage #1: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione With sodium hydroxide; zinc In water for 1h; Reflux;
Stage #2: 1-bromo-octane With tetrabutylammomium bromide In water for 8h; Reflux;
89.7%
Stage #1: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione With sodium hydroxide; zinc In water for 2h; Inert atmosphere; Reflux;
Stage #2: 1-bromo-octane With tetrabutylammomium bromide In water Inert atmosphere; Reflux;
86%
Stage #1: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione With sodium hydroxide; zinc In water for 1h; Reflux;
Stage #2: 1-bromo-octane With tetrabutylammomium bromide In water for 12h; Reflux;
74.3%
4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

methylmagnesium bromide
75-16-1

methylmagnesium bromide

8-hydroxy-8-methylbenzo[1,2-b:4,5-b']dithiophen-4-one

8-hydroxy-8-methylbenzo[1,2-b:4,5-b']dithiophen-4-one

Conditions
ConditionsYield
In toluene at 0 - 20℃;87.5%
In toluene at 0 - 20℃; Inert atmosphere;87.5%
2-ethylhexyl bromide
18908-66-2

2-ethylhexyl bromide

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

4,8-di(2-ethylhexyloxy)benzo[1,2-b:4,5-b']dithiophene
1160823-77-7

4,8-di(2-ethylhexyloxy)benzo[1,2-b:4,5-b']dithiophene

Conditions
ConditionsYield
Stage #1: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione With potassium hydroxide; zinc In N,N-dimethyl-formamide at 80℃; for 48h;
Stage #2: 3-bromomethylheptane In N,N-dimethyl-formamide at 80℃; for 24h; Inert atmosphere;
87%
Stage #1: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione With sodium hydroxide; zinc In water at 120℃; for 13h;
Stage #2: 3-bromomethylheptane With tetrabutylammomium bromide In water Time;
87%
Stage #1: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione With sodium hydroxide; zinc In water at 120℃; for 13h;
Stage #2: 3-bromomethylheptane With tetrabutylammomium bromide In water
87%
(S)-2-ethylhexyl p-toluenesulfonate

(S)-2-ethylhexyl p-toluenesulfonate

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

4,8-bis((S)-2-ethylhexyloxy)benzo[1,2-b:4,5-b']dithiophene

4,8-bis((S)-2-ethylhexyloxy)benzo[1,2-b:4,5-b']dithiophene

Conditions
ConditionsYield
Stage #1: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione With sodium hydroxide; zinc In water for 1h; Reflux;
Stage #2: (S)-2-ethylhexyl p-toluenesulfonate With tetrabutylammomium bromide In water for 12h; Reflux;
87%
4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

1-dodecylbromide
143-15-7

1-dodecylbromide

4,8-didodecyloxybenzo[1,2-b:4,5-b’]dithiophene
1044795-04-1

4,8-didodecyloxybenzo[1,2-b:4,5-b’]dithiophene

Conditions
ConditionsYield
With tetrabutylammomium bromide; sodium hydroxide; zinc In water at 90℃; for 14h; Temperature;86%
Stage #1: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione With sodium hydroxide; zinc In water at 90℃;
Stage #2: 1-dodecylbromide With tetrabutylammomium bromide In water Temperature;
86%
Stage #1: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione With sodium hydroxide; zinc In water for 1h; Reflux;
Stage #2: 1-dodecylbromide With tetrabutylammomium bromide In water for 10h; Reflux;
80%
4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

3-ethyl-1-heptyne
55944-43-9

3-ethyl-1-heptyne

4,8-bis-(3-ethyl-hept-1-ynyl)-benzo[1,2-b;4,5-b']dithiophene
1353720-52-1

4,8-bis-(3-ethyl-hept-1-ynyl)-benzo[1,2-b;4,5-b']dithiophene

Conditions
ConditionsYield
Stage #1: 3-ethyl-1-heptyne With n-butyllithium In tetrahydrofuran; hexane at 23℃; for 0.5h;
Stage #2: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione In tetrahydrofuran; hexane at 60℃; for 1h;
Stage #3: With hydrogenchloride; tin(ll) chloride In tetrahydrofuran; hexane; water at 23 - 60℃; for 1h;
86%
With n-butyllithium; stannous chloride In tetrahydrofuran; hydrogenchloride; water35%
4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

4-bromine-1,2-bis(octyloxy)benzene
291753-67-8

4-bromine-1,2-bis(octyloxy)benzene

4,8-bis(1,2-bis(octyloxy)-4-phenyl)benzo[1,2-b:4,5-b']dithiophene

4,8-bis(1,2-bis(octyloxy)-4-phenyl)benzo[1,2-b:4,5-b']dithiophene

Conditions
ConditionsYield
Stage #1: 4-bromo-1,2-bis(n-octyloxy)benzene With n-butyllithium In tetrahydrofuran; hexane at -78℃; for 1h; Inert atmosphere;
Stage #2: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione In tetrahydrofuran; hexane at 20℃; Inert atmosphere;
Stage #3: With hydrogenchloride; tin(II) chloride dihdyrate In tetrahydrofuran; hexane; water at 20℃; for 5h; Inert atmosphere;
85%
4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

2-hexyldecyl methanesulfonate
111360-16-8

2-hexyldecyl methanesulfonate

4,8-bis((2-hexyldecyl)oxy)benzo[1,2-b:4,5-b’]dithiophene
1254985-73-3

4,8-bis((2-hexyldecyl)oxy)benzo[1,2-b:4,5-b’]dithiophene

Conditions
ConditionsYield
Stage #1: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione With tetrabutylammomium bromide; sodium hydroxide; zinc In water for 1h; Inert atmosphere; Reflux;
Stage #2: 2-hexyldecyl methanesulfonate With zinc In water Inert atmosphere; Reflux;
84%
Stage #1: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione With tetrabutylammomium bromide; sodium hydroxide; zinc In water for 1h; Reflux; Inert atmosphere;
Stage #2: 2-hexyldecyl methanesulfonate In water for 2h; Reflux; Inert atmosphere;
72%
4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

2-(2'-butyl-1'-octyl)thiophene
1271438-65-3

2-(2'-butyl-1'-octyl)thiophene

4,8-bis(5-(2-butyloctyl)thiophene-2-yl)benzo[1,2-b;4,5-b']-dithiophene

4,8-bis(5-(2-butyloctyl)thiophene-2-yl)benzo[1,2-b;4,5-b']-dithiophene

Conditions
ConditionsYield
Stage #1: 2-(2'-butyl-1'-octyl)thiophene With n-butyllithium In tetrahydrofuran; hexane at -78 - 50℃; for 2h;
Stage #2: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione In tetrahydrofuran; hexane at 50℃; for 2h;
Stage #3: With hydrogenchloride; tin(II) chloride hydrate In tetrahydrofuran; hexane; water at 20℃; for 2h;
84%
Stage #1: 2-(2'-butyl-1'-octyl)thiophene With n-butyllithium In tetrahydrofuran at 0 - 50℃; for 1.25h; Inert atmosphere;
Stage #2: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione In tetrahydrofuran at 50℃; for 1h; Inert atmosphere;
Stage #3: With hydrogenchloride; tin(II) chloride dihdyrate In tetrahydrofuran; water for 1.5h; Inert atmosphere;
69%
Stage #1: 2-(2'-butyl-1'-octyl)thiophene With n-butyllithium In tetrahydrofuran at 0 - 50℃; for 0.666667h; Inert atmosphere;
Stage #2: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione In tetrahydrofuran at 50℃; for 1h; Inert atmosphere;
Stage #3: With hydrogenchloride; tin(II) chloride dihdyrate In tetrahydrofuran; water at 20℃; Inert atmosphere;
63%
Stage #1: 2-(2'-butyl-1'-octyl)thiophene With n-butyllithium In tetrahydrofuran at 0 - 50℃; for 1h; Inert atmosphere;
Stage #2: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione In tetrahydrofuran at 50℃; for 1h; Inert atmosphere;
Stage #3: With hydrogenchloride; tin(II) chloride dihdyrate In tetrahydrofuran; water at 20℃; for 4h; Inert atmosphere;
61%
4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

1-Bromopentane
110-53-2

1-Bromopentane

4,8-bis(pentyloxy)benzo[1,2-b:4,5-b’]dithiophene

4,8-bis(pentyloxy)benzo[1,2-b:4,5-b’]dithiophene

Conditions
ConditionsYield
Stage #1: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione With sodium hydroxide; zinc In water for 3h; Reflux;
Stage #2: 1-Bromopentane In water at 80℃; for 12h; Reflux; Alkaline conditions;
84%
2-dodecylthiophene
4861-61-4

2-dodecylthiophene

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

4,8-bis(2-dodecylthiophene-5-yl)benzo[1,2-b:4,5-b’]dithiophene
1351130-14-7

4,8-bis(2-dodecylthiophene-5-yl)benzo[1,2-b:4,5-b’]dithiophene

Conditions
ConditionsYield
Stage #1: 2-dodecylthiophene With n-butyllithium In tetrahydrofuran at -30 - 50℃; for 2h; Inert atmosphere;
Stage #2: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione In tetrahydrofuran at 50℃; for 2h; Inert atmosphere;
Stage #3: With hydrogenchloride; tin(II) chloride dihdyrate In tetrahydrofuran; water at 20℃; Inert atmosphere;
83%
Stage #1: 2-dodecylthiophene With n-butyllithium In tetrahydrofuran; hexane at -20℃; for 2h; Inert atmosphere; Schlenk technique;
Stage #2: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione In tetrahydrofuran; hexane for 1h; Reflux; Inert atmosphere; Schlenk technique;
Stage #3: With tin(ll) chloride In tetrahydrofuran; hexane; water at 20℃; for 1h; Reflux; Inert atmosphere; Schlenk technique;
59%
Stage #1: 2-dodecylthiophene; 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione With n-butyllithium In tetrahydrofuran
Stage #2: With hydrogenchloride; tin(ll) chloride In water
48%
Stage #1: 2-dodecylthiophene With n-butyllithium In tetrahydrofuran at 0℃; Inert atmosphere;
Stage #2: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione Inert atmosphere;
Stage #3: With tin(II) chloride dihdyrate Reflux; Inert atmosphere;
Stage #1: 2-dodecylthiophene With n-butyllithium In tetrahydrofuran at 0℃; Inert atmosphere;
Stage #2: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione Inert atmosphere;
Stage #3: With tin(II) chloride dihdyrate Inert atmosphere;
4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

2-(2-ethylhexyl)thiophen
4891-44-5

2-(2-ethylhexyl)thiophen

4-(5-(2-ethylhexyl)thiophen-2-yl)-8-(5-(2-ethylhexyl)thiophene-2-yl)benzo[1,2-b:4,5-b']dithiophene
1352642-35-3

4-(5-(2-ethylhexyl)thiophen-2-yl)-8-(5-(2-ethylhexyl)thiophene-2-yl)benzo[1,2-b:4,5-b']dithiophene

Conditions
ConditionsYield
Stage #1: 2-(2-ethylhexyl)thiophen With n-butyllithium In tetrahydrofuran; hexane at 0 - 50℃; for 1h; Inert atmosphere;
Stage #2: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione In tetrahydrofuran; hexane at 50℃; for 1h; Inert atmosphere;
Stage #3: With hydrogenchloride; tin(ll) chloride In tetrahydrofuran; hexane; water at 20℃; for 2h; Inert atmosphere;
82%
Stage #1: 2-(2-ethylhexyl)thiophen With n-butyllithium In tetrahydrofuran at -30 - 50℃; for 2h; Inert atmosphere;
Stage #2: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione In tetrahydrofuran at 50℃; for 2h; Inert atmosphere;
76%
Stage #1: 2-(2-ethylhexyl)thiophen With n-butyllithium In tetrahydrofuran; hexane at -78 - 50℃; for 2h;
Stage #2: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione In tetrahydrofuran; hexane at 50℃; for 2h;
Stage #3: With hydrogenchloride; tin(II) chloride hydrate In tetrahydrofuran; hexane; water at 20℃; for 2h;
76%
ethyl bromide
74-96-4

ethyl bromide

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

4,8-diethoxybenzo[1,2-b:4,5-b′]dithiophene

4,8-diethoxybenzo[1,2-b:4,5-b′]dithiophene

Conditions
ConditionsYield
Stage #1: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione With sodium hydroxide; zinc In water at 130℃;
Stage #2: ethyl bromide With tetrabutylammomium bromide In water
82%
Stage #1: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione With sodium hydroxide; zinc In water for 3h; Inert atmosphere; Schlenk technique; Reflux;
Stage #2: ethyl bromide With tetrabutylammomium bromide In water for 6h; Inert atmosphere; Schlenk technique; Reflux;
67%
4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

4-tert-Butylphenylacetylene
772-38-3

4-tert-Butylphenylacetylene

C34H30S2

C34H30S2

Conditions
ConditionsYield
Stage #1: 4-tert-Butylphenylacetylene With n-butyllithium In tetrahydrofuran; hexane at -78℃; for 1h; Inert atmosphere;
Stage #2: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione In tetrahydrofuran; hexane at 20℃; for 6h; Inert atmosphere;
Stage #3: With hydrogenchloride; tin(ll) chloride In tetrahydrofuran; hexane; water Inert atmosphere;
82%
Stage #1: 4-tert-Butylphenylacetylene With n-butyllithium In tetrahydrofuran; hexane at -78℃; for 1h; Inert atmosphere;
Stage #2: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione In tetrahydrofuran; hexane at 20℃; for 1h;
Stage #3: With hydrogenchloride; tin(ll) chloride In tetrahydrofuran; hexane; water
4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

methyl iodide
74-88-4

methyl iodide

4,8-Dimethoxybenzo<1,2-b:4,5-b'>dithiophene
85903-02-2

4,8-Dimethoxybenzo<1,2-b:4,5-b'>dithiophene

Conditions
ConditionsYield
Stage #1: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione With sodium hydroxide; zinc In water for 2h; Inert atmosphere; Schlenk technique; Reflux;
Stage #2: methyl iodide With tetrabutylammomium bromide for 16h; Inert atmosphere; Schlenk technique; Reflux;
82%
4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

4-cyanophenylacetylene
3032-92-6

4-cyanophenylacetylene

C28H12N2S2

C28H12N2S2

Conditions
ConditionsYield
Stage #1: 4-cyanophenylacetylene With n-butyllithium In tetrahydrofuran; hexane at -78℃; for 1h; Inert atmosphere;
Stage #2: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione In tetrahydrofuran; hexane at 20℃; for 1h;
Stage #3: With hydrogenchloride; tin(ll) chloride In tetrahydrofuran; hexane; water
82%
2,3-dihexylthiophene

2,3-dihexylthiophene

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione
32281-36-0

4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

4,8-bis(4,5-dihexylthiophen-2-yl)benzo[1,2-b:4,5-b']dithiophene
1421924-02-8

4,8-bis(4,5-dihexylthiophen-2-yl)benzo[1,2-b:4,5-b']dithiophene

Conditions
ConditionsYield
Stage #1: 2,3-dihexylthiophene With n-butyllithium In tetrahydrofuran; hexane at 0 - 50℃; for 1h; Inert atmosphere;
Stage #2: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione In tetrahydrofuran at 50℃; for 2h;
Stage #3: With hydrogenchloride; tin(II) chloride dihdyrate In tetrahydrofuran; hexane; water at 20℃; for 2h;
81%
Stage #1: 2,3-dihexylthiophene With n-butyllithium In tetrahydrofuran at 50℃; for 2.75h; Cooling with ice; Inert atmosphere;
Stage #2: 4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione In tetrahydrofuran at 50℃; for 2.5h; Inert atmosphere;
Stage #3: With hydrogenchloride; tin(II) chloride dihdyrate In tetrahydrofuran; water at 20℃; Inert atmosphere;
64.6%

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