ChemicalBook > CAS DataBase List > 4H-Cyclopenta[2,1-b:3,4-b']dithiophen-4-one

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

Product Name: 4H-Cyclopenta[2,1-b:3,4-b']dithiophen-4-one
CAS No.: 25796-77-4
Chemical Name: 4H-Cyclopenta[2,1-b:3,4-b']dithiophen-4-one
Synonyms: DTCO;S1370;Cyclopenta[2,1-b;]dithiophen-4-one;3,4-b']dithiophen-4-one;3,4-b']dithiophen-4-one;Cyclopenta[2,1-b:3,4-b']d;Cyclopentadithiophene ketone;Cyclopenta[1,2-b:5,4-b']dithiophen-4-one;Cyclopenta[2,1-b:3,4-b']dithiophen-4-one
CBNumber: CB42484839
Molecular Formula: C9H4OS2
Formula Weight: 192.26
MOL File: 25796-77-4.mol

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

Melting point:: 134.0 to 138.0 °C
Boiling point:: 349.6±17.0 °C(Predicted)
Density: 1.553
storage temp.: Keep in dark place,Sealed in dry,Room Temperature
form: powder to crystal
color: Orange to Amber to Dark red
InChI: InChI=1S/C9H4OS2/c10-7-5-1-3-11-8(5)9-6(7)2-4-12-9/h1-4H
InChIKey: HFIUHKXJUKKOIZ-UHFFFAOYSA-N
SMILES: C12C3SC=CC=3C(=O)C=1C=CS2

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Safety

HS Code: 2934.99.9001

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P321Specific treatment (see … on this label).

P332+P313IF SKIN irritation occurs: Get medical advice/attention.

P362Take off contaminated clothing and wash before reuse.

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N-Bromosuccinimide Price

TCI Chemical

Product number: C2715
Product name: 4H-Cyclopenta[1,2-b:5,4-b']dithiophen-4-one
Purity: >98.0%(GC)
Packaging: 200mg
Price: $75
Updated: 2025/07/31

TRC

Product number: C992283
Product name: 4H-Cyclopenta[2,1-B:3,4-B'']dithiophen-4-one
Packaging: 25mg
Price: $75
Updated: 2021/12/16

American Custom Chemicals Corporation

Product number: CHM0392018
Product name: CYCLOPENTA[2,1-B,3,4-B']DITHIOPHEN-4-ONE
Purity: 95.00%
Packaging: 5MG
Price: $504.06
Updated: 2021/12/16

Matrix Scientific

Product number: 093627
Product name: Cyclopenta[2,1-b:3,4-b']dithiophen-4-one
Purity: 95+%
Packaging: 1g
Price: $1260
Updated: 2021/12/16

Biosynth Carbosynth

Product number: FC45967
Product name: 4H-Cyclopenta[2,1-b:3,4-b']dithiophen-4-one
Packaging: 100g
Price: $4696
Updated: 2021/12/16

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4H-Cyclopenta[2,1-b:3,4-b']dithiophen-4-one Chemical Properties,Usage,Production

Uses

suzuki reaction

Synthesis

51751-44-1

79-44-7

25796-77-4

The general procedure for the synthesis of 4H-cyclopenta[2,1-B:3,4-B']dithiophen-4-one from 3,3'-dibromo-2,2'-bithiophene and dimethylcarbamoyl chloride was carried out as follows: 30 g of diethyl ether was added to a 250 mL three-necked flask under nitrogen protection and cooled to -70 °C by a cryogenic bath with stirring. Subsequently, 20 mL (0.05 mol, 2.5 mol/L) of hexane solution was slowly added, followed by the dropwise addition of 6.28 g (0.02 mol) of diethyl ether solution of Intermediate 1. After addition, the reaction was continued with stirring for 1 hour. Then, 2.58 g (0.024 mol) of N,N-dimethylcarbonyl chloride was added slowly and the reaction was continued with stirring for 3 hours. Upon completion of the reaction, the temperature of the reaction system was raised to 0°C and 20 g of water was added to terminate the reaction. The reaction mixture was partitioned and the organic phase was extracted with ethyl acetate. The organic phases were combined and concentrated under reduced pressure to remove the solvent to give a yellow oil. Finally, 2.88 g of light yellow liquid product was obtained in 75.1% yield by column chromatography separation and purification using petroleum ether: ethyl acetate = 20:1 (v/v) as eluent.

References

[1] Journal of Materials Chemistry A, 2017, vol. 5, # 17, p. 7811 - 7815
[2] Journal of Materials Chemistry C, 2018, vol. 6, # 3, p. 500 - 511
[3] Patent: CN108148074, 2018, A. Location in patent: Paragraph 0058; 0059; 0060
[4] Inorganic Chemistry, 2016, vol. 55, # 13, p. 6653 - 6659

4H-Cyclopenta[2,1-b:3,4-b']dithiophen-4-one Preparation Products And Raw materials

Raw materials

Preparation Products

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View Lastest Price from 4H-Cyclopenta[2,1-b:3,4-b']dithiophen-4-one manufacturers

ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD

Product: 4H-Cyclopenta[2,1-b:3,4-b']dithiophen-4-one 25796-77-4
Price: US $3.00-9.00/kg
Min. Order: 1kg
Purity: 99%min
Supply Ability: 50kg
Release date: 2025-07-29

Shaanxi Dideu Medichem Co. Ltd

Product: 4H-Cyclopenta[2,1-b:3,4-b']dithiophen-4-one 25796-77-4
Price: US $778.00/KG
Min. Order: 1KG
Purity: 98%
Supply Ability: 1T
Release date: 2020-06-28

Zhuozhou Wenxi import and Export Co., Ltd

Product: Cyclopenta[2,1-b;3,4-b"]dithiophen-4-one 25796-77-4
Price: US $15.00-10.00/KG
Min. Order: 1KG
Purity: 99%+ HPLC
Supply Ability: Monthly supply of 1 ton
Release date: 2021-07-10

25796-77-4, 4H-Cyclopenta[2,1-b:3,4-b']dithiophen-4-oneRelated Search:

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25796-77-4

25792-77-4

C9H4OS2

DTC